TY  - JOUR
AU  - Marković, Bojana M.
AU  - Stefanović, Ivan S.
AU  - Nastasović, Aleksandra B.
AU  - Sandić, Zvjezdana P.
AU  - Suručić, Ljiljana T.
AU  - Dapčević, Aleksandra
AU  - Džunuzović, Jasna V.
AU  - Jagličić, Zvonko
AU  - Vuković, Zorica M.
AU  - Pavlović, Vladimir
AU  - Onjia, Antonije
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4950
AB  - A novel magnetic polymer/bentonite composite was prepared by suspension copolymerization of glycidyl methacrylate and ethylene glycol dimethacrylate in the presence of magnetic bentonite (MB-PGME) and functionalized with ethylene diamine and hexamethylene diamine (MB-PGME-ED and MB-PGME-HD). The obtained samples were characterized in terms of structure as well as thermal, magnetic and morphological properties. The sorption of rhenium (Re) and tungsten (W) from aqueous solution onto MB-PGME-ED and MB-PGME-HD was investigated considering their contact time and different initial ion concentration, giving possibility for usage of these composites as commercial sorbents. The sorption system follows the pseudo-second order and intraparticle diffusion kinetic models. The results indicated a better fit with the Freundlich isotherm model.
T2  - Science of Sintering
T1  - Novel Magnetic Polymer/bentonite Composite: Characterization and Application for Re(VII) and W(VI) Adsorption
EP  - 428
IS  - 4
SP  - 419
VL  - 53
DO  - 10.2298/SOS2104419M
ER  - 

@article{
author = "Marković, Bojana M. and Stefanović, Ivan S. and Nastasović, Aleksandra B. and Sandić, Zvjezdana P. and Suručić, Ljiljana T. and Dapčević, Aleksandra and Džunuzović, Jasna V. and Jagličić, Zvonko and Vuković, Zorica M. and Pavlović, Vladimir and Onjia, Antonije",
year = "2021",
abstract = "A novel magnetic polymer/bentonite composite was prepared by suspension copolymerization of glycidyl methacrylate and ethylene glycol dimethacrylate in the presence of magnetic bentonite (MB-PGME) and functionalized with ethylene diamine and hexamethylene diamine (MB-PGME-ED and MB-PGME-HD). The obtained samples were characterized in terms of structure as well as thermal, magnetic and morphological properties. The sorption of rhenium (Re) and tungsten (W) from aqueous solution onto MB-PGME-ED and MB-PGME-HD was investigated considering their contact time and different initial ion concentration, giving possibility for usage of these composites as commercial sorbents. The sorption system follows the pseudo-second order and intraparticle diffusion kinetic models. The results indicated a better fit with the Freundlich isotherm model.",
journal = "Science of Sintering",
title = "Novel Magnetic Polymer/bentonite Composite: Characterization and Application for Re(VII) and W(VI) Adsorption",
pages = "428-419",
number = "4",
volume = "53",
doi = "10.2298/SOS2104419M"
}

Marković, B. M., Stefanović, I. S., Nastasović, A. B., Sandić, Z. P., Suručić, L. T., Dapčević, A., Džunuzović, J. V., Jagličić, Z., Vuković, Z. M., Pavlović, V.,& Onjia, A.. (2021). Novel Magnetic Polymer/bentonite Composite: Characterization and Application for Re(VII) and W(VI) Adsorption. in Science of Sintering, 53(4), 419-428.
https://doi.org/10.2298/SOS2104419M

Marković BM, Stefanović IS, Nastasović AB, Sandić ZP, Suručić LT, Dapčević A, Džunuzović JV, Jagličić Z, Vuković ZM, Pavlović V, Onjia A. Novel Magnetic Polymer/bentonite Composite: Characterization and Application for Re(VII) and W(VI) Adsorption. in Science of Sintering. 2021;53(4):419-428.
doi:10.2298/SOS2104419M .

Marković, Bojana M., Stefanović, Ivan S., Nastasović, Aleksandra B., Sandić, Zvjezdana P., Suručić, Ljiljana T., Dapčević, Aleksandra, Džunuzović, Jasna V., Jagličić, Zvonko, Vuković, Zorica M., Pavlović, Vladimir, Onjia, Antonije, "Novel Magnetic Polymer/bentonite Composite: Characterization and Application for Re(VII) and W(VI) Adsorption" in Science of Sintering, 53, no. 4 (2021):419-428,
https://doi.org/10.2298/SOS2104419M . .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Džunuzović, Jasna V.
AU  - Džunuzović, Enis
AU  - Brzić, Saša J.
AU  - Jasiukaitytė-Grojzdek, Edita
AU  - Basagni, Andrea
AU  - Marega, Carla
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4803
AB  - A series of novel waterborne polyurethanes (WBPUs) was synthesized using alpha,omega-dihydroxypropyl poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI), 2,2-bis-(hydroxymethyl) propionic acid (DMPA) and triethylamine (TEA). Different DMPA/PDMS molar ratio (from 0.2 to 0.7) and fixed -NCO/-OH molar ratio of 1.7, has been applied for the synthesis of six different WBPU films, without utilization of chain extension step during the synthesis. The structure of the prepared WBPUs was examined and confirmed by FTIR and NMR spectroscopy. The particle size of the prepared WBPU dispersions and molecular weight of WBPU films decrease with increasing DMPA content. In order to investigate the effect of the DMPA/PDMS ratio on thermal, mechanical and morphological properties, as well as the water resistance of the prepared WBPUs, diverse experimental techniques, such as thermogravimetric analysis, dynamic mechanical analysis, tensile tests, X-ray diffraction analysis (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water contact angle measurements have been carried out. This research has shown that the incorporation of PDMS in WBPUs led to the appearance of microphase separation and provided surface hydrophobicity, good thermal and mechanical properties, which allow application of these WBPUs as coatings for various purposes.
T2  - Progress in Organic Coatings
T1  - Tailoring the properties of waterborne polyurethanes by incorporating different content of poly(dimethylsiloxane)
SP  - 106474
VL  - 161
DO  - 10.1016/j.porgcoat.2021.106474
ER  - 

@article{
author = "Stefanović, Ivan S. and Džunuzović, Jasna V. and Džunuzović, Enis and Brzić, Saša J. and Jasiukaitytė-Grojzdek, Edita and Basagni, Andrea and Marega, Carla",
year = "2021",
abstract = "A series of novel waterborne polyurethanes (WBPUs) was synthesized using alpha,omega-dihydroxypropyl poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI), 2,2-bis-(hydroxymethyl) propionic acid (DMPA) and triethylamine (TEA). Different DMPA/PDMS molar ratio (from 0.2 to 0.7) and fixed -NCO/-OH molar ratio of 1.7, has been applied for the synthesis of six different WBPU films, without utilization of chain extension step during the synthesis. The structure of the prepared WBPUs was examined and confirmed by FTIR and NMR spectroscopy. The particle size of the prepared WBPU dispersions and molecular weight of WBPU films decrease with increasing DMPA content. In order to investigate the effect of the DMPA/PDMS ratio on thermal, mechanical and morphological properties, as well as the water resistance of the prepared WBPUs, diverse experimental techniques, such as thermogravimetric analysis, dynamic mechanical analysis, tensile tests, X-ray diffraction analysis (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water contact angle measurements have been carried out. This research has shown that the incorporation of PDMS in WBPUs led to the appearance of microphase separation and provided surface hydrophobicity, good thermal and mechanical properties, which allow application of these WBPUs as coatings for various purposes.",
journal = "Progress in Organic Coatings",
title = "Tailoring the properties of waterborne polyurethanes by incorporating different content of poly(dimethylsiloxane)",
pages = "106474",
volume = "161",
doi = "10.1016/j.porgcoat.2021.106474"
}

Stefanović, I. S., Džunuzović, J. V., Džunuzović, E., Brzić, S. J., Jasiukaitytė-Grojzdek, E., Basagni, A.,& Marega, C.. (2021). Tailoring the properties of waterborne polyurethanes by incorporating different content of poly(dimethylsiloxane). in Progress in Organic Coatings, 161, 106474.
https://doi.org/10.1016/j.porgcoat.2021.106474

Stefanović IS, Džunuzović JV, Džunuzović E, Brzić SJ, Jasiukaitytė-Grojzdek E, Basagni A, Marega C. Tailoring the properties of waterborne polyurethanes by incorporating different content of poly(dimethylsiloxane). in Progress in Organic Coatings. 2021;161:106474.
doi:10.1016/j.porgcoat.2021.106474 .

Stefanović, Ivan S., Džunuzović, Jasna V., Džunuzović, Enis, Brzić, Saša J., Jasiukaitytė-Grojzdek, Edita, Basagni, Andrea, Marega, Carla, "Tailoring the properties of waterborne polyurethanes by incorporating different content of poly(dimethylsiloxane)" in Progress in Organic Coatings, 161 (2021):106474,
https://doi.org/10.1016/j.porgcoat.2021.106474 . .

TY  - JOUR
AU  - Stefanović, Ivan
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Dapčević, Aleksandra
AU  - Šešlija, Sanja
AU  - Balanč, Bojana
AU  - Dobrzyńska-Mizera, Monika
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4
AB  - This work was focused on the synthesis of polyurethane networks (PUNs) based on polycaprolactone (PCL) as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation and 4,4 '-diphenylmethane diisocyanate (MDI) as the parts of the hard segments (HS), by a two-step solution polymerization. In order to find the best ratio between HS and SS to achieve good thermal and mechanical properties, suitable hydrophobicity and morphology of the PUNs, various experimental analyses were conducted. The obtained results revealed that features of the PUNs highly depend on the PCL content. The increase in the PCL content leads to the increase in thermal stability, hydrophobicity and appearance of the microphase separation, but on the other side, it also leads to the decrease in storage modulus in the rubbery plateau, crosslinking density and glass transition temperatures of PUNs. This work shows that features of PUNs can be easily adjusted for a specific application by careful selection of the SS and HS ratio.
PB  - Springer, New York
T2  - Polymer Bulletin
T1  - Composition-property relationship of polyurethane networks based on polycaprolactone diol
EP  - 7128
SP  - 7103
VL  - 78
DO  - 10.1007/s00289-020-03473-0
ER  - 

@article{
author = "Stefanović, Ivan and Džunuzović, Jasna and Džunuzović, Enis and Dapčević, Aleksandra and Šešlija, Sanja and Balanč, Bojana and Dobrzyńska-Mizera, Monika",
year = "2021",
abstract = "This work was focused on the synthesis of polyurethane networks (PUNs) based on polycaprolactone (PCL) as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation and 4,4 '-diphenylmethane diisocyanate (MDI) as the parts of the hard segments (HS), by a two-step solution polymerization. In order to find the best ratio between HS and SS to achieve good thermal and mechanical properties, suitable hydrophobicity and morphology of the PUNs, various experimental analyses were conducted. The obtained results revealed that features of the PUNs highly depend on the PCL content. The increase in the PCL content leads to the increase in thermal stability, hydrophobicity and appearance of the microphase separation, but on the other side, it also leads to the decrease in storage modulus in the rubbery plateau, crosslinking density and glass transition temperatures of PUNs. This work shows that features of PUNs can be easily adjusted for a specific application by careful selection of the SS and HS ratio.",
publisher = "Springer, New York",
journal = "Polymer Bulletin",
title = "Composition-property relationship of polyurethane networks based on polycaprolactone diol",
pages = "7128-7103",
volume = "78",
doi = "10.1007/s00289-020-03473-0"
}

Stefanović, I., Džunuzović, J., Džunuzović, E., Dapčević, A., Šešlija, S., Balanč, B.,& Dobrzyńska-Mizera, M.. (2021). Composition-property relationship of polyurethane networks based on polycaprolactone diol. in Polymer Bulletin
Springer, New York., 78, 7103-7128.
https://doi.org/10.1007/s00289-020-03473-0

Stefanović I, Džunuzović J, Džunuzović E, Dapčević A, Šešlija S, Balanč B, Dobrzyńska-Mizera M. Composition-property relationship of polyurethane networks based on polycaprolactone diol. in Polymer Bulletin. 2021;78:7103-7128.
doi:10.1007/s00289-020-03473-0 .

Stefanović, Ivan, Džunuzović, Jasna, Džunuzović, Enis, Dapčević, Aleksandra, Šešlija, Sanja, Balanč, Bojana, Dobrzyńska-Mizera, Monika, "Composition-property relationship of polyurethane networks based on polycaprolactone diol" in Polymer Bulletin, 78 (2021):7103-7128,
https://doi.org/10.1007/s00289-020-03473-0 . .

TY  - JOUR
AU  - Džunuzović, Jasna
AU  - Stefanović, Ivan
AU  - Džunuzović, Enis
AU  - Dapčević, Aleksandra
AU  - Šešlija, Sanja
AU  - Balanč, Bojana
AU  - Lamae, Giuseppe C.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4118
AB  - A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation
VL  - 137
DO  - 10.1016/j.porgcoat.2019.105305
ER  - 

@article{
author = "Džunuzović, Jasna and Stefanović, Ivan and Džunuzović, Enis and Dapčević, Aleksandra and Šešlija, Sanja and Balanč, Bojana and Lamae, Giuseppe C.",
year = "2019",
abstract = "A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation",
volume = "137",
doi = "10.1016/j.porgcoat.2019.105305"
}

Džunuzović, J., Stefanović, I., Džunuzović, E., Dapčević, A., Šešlija, S., Balanč, B.,& Lamae, G. C.. (2019). Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 137.
https://doi.org/10.1016/j.porgcoat.2019.105305

Džunuzović J, Stefanović I, Džunuzović E, Dapčević A, Šešlija S, Balanč B, Lamae GC. Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings. 2019;137.
doi:10.1016/j.porgcoat.2019.105305 .

Džunuzović, Jasna, Stefanović, Ivan, Džunuzović, Enis, Dapčević, Aleksandra, Šešlija, Sanja, Balanč, Bojana, Lamae, Giuseppe C., "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation" in Progress in Organic Coatings, 137 (2019),
https://doi.org/10.1016/j.porgcoat.2019.105305 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Ćirjaković, Stefan
AU  - Kovač, Tijana
AU  - Tomić, Miloš
AU  - Dapčević, Aleksandra
AU  - Džunuzović, Jasna
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3824
AB  - The surface of anatase TiO2 nanoparticles was modified with in situ synthesized imine, based on 3,4-dihydroxybenzaldehyde and octadecylamine. The modified TiO2 nanoparticles were investigated using FTIR and UV-Vis spectroscopy, which confirmed the formation of the charge transfer complex between imine and surface of TiO2 nanoparticles by the reaction of surface Ti atoms with hydroxyl groups of a modifying agent. TiO2 nanoparticles modified with imine were further applied as a filler for the preparation of epoxy based nanocomposites. Thermal and mechani­cal properties of the prepared nanocomposites were examined using the dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis and hardness measurements. The obtained results have shown that modified TiO2 nanoparticles have no significant influence on the glass transition temperature and that they slow down thermo-oxidative degradation of epoxy resin in the first stage and increase hardness of the crosslinked epoxy resin.
AB  - Površina nanočestica TiO2 modifikovana je 'in situ' sintetisanim iminom na bazi 3,4-dihidroksibenzaldehida i oktadecilamina. Modifikovane TiO2 nanočestice su ispitivane primenom FTIR i UV-Vis spektroskopije, čime je potvrđeno formiran­je 'charge transfer' kompleksa između imina i površine TiO2 nanočestica preko reakcije Ti atoma na površini čestica sa hidroksilnim grupama modifikatora. Modifikovane TiO2 nanočestice su zatim iskorišćene kao punioci za pripremu nanokompozita na bazi epoksidne smole. Termička i mehanička svojstva pripremljenih na­nokompozita su ispitana primenom dinamičko mehaničke analize, diferencijalne skenirajuće kalorimetrije, termogravimetrijske analize i ispitivanjem njihove tvrdoće. Dobijeni rezultati su pokazali da TiO2 nanočestice površinski modifikovane iminom ne utiču značajno na temperaturu ostakljivanja epoksidne smole, da usporavaju termooksidativnu degradaciju u prvom stupnju i da povećavaju tvrdoću umrežene epoksidne smole.
PB  - Univerzitet u Nišu - Tehnološki fakultet, Leskovac
T2  - Advanced Technologies
T1  - Titanium dioxide nanoparticles surface modified with imine as fillers for epoxy resin
T1  - Nanočestice titan-dioksida površinski modifikovane iminom kao punioci za epoksidnu smolu
EP  - 53
IS  - 2
SP  - 46
VL  - 7
DO  - 10.5937/SavTeh1802046D
ER  - 

@article{
author = "Džunuzović, Enis and Ćirjaković, Stefan and Kovač, Tijana and Tomić, Miloš and Dapčević, Aleksandra and Džunuzović, Jasna",
year = "2018",
abstract = "The surface of anatase TiO2 nanoparticles was modified with in situ synthesized imine, based on 3,4-dihydroxybenzaldehyde and octadecylamine. The modified TiO2 nanoparticles were investigated using FTIR and UV-Vis spectroscopy, which confirmed the formation of the charge transfer complex between imine and surface of TiO2 nanoparticles by the reaction of surface Ti atoms with hydroxyl groups of a modifying agent. TiO2 nanoparticles modified with imine were further applied as a filler for the preparation of epoxy based nanocomposites. Thermal and mechani­cal properties of the prepared nanocomposites were examined using the dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis and hardness measurements. The obtained results have shown that modified TiO2 nanoparticles have no significant influence on the glass transition temperature and that they slow down thermo-oxidative degradation of epoxy resin in the first stage and increase hardness of the crosslinked epoxy resin., Površina nanočestica TiO2 modifikovana je 'in situ' sintetisanim iminom na bazi 3,4-dihidroksibenzaldehida i oktadecilamina. Modifikovane TiO2 nanočestice su ispitivane primenom FTIR i UV-Vis spektroskopije, čime je potvrđeno formiran­je 'charge transfer' kompleksa između imina i površine TiO2 nanočestica preko reakcije Ti atoma na površini čestica sa hidroksilnim grupama modifikatora. Modifikovane TiO2 nanočestice su zatim iskorišćene kao punioci za pripremu nanokompozita na bazi epoksidne smole. Termička i mehanička svojstva pripremljenih na­nokompozita su ispitana primenom dinamičko mehaničke analize, diferencijalne skenirajuće kalorimetrije, termogravimetrijske analize i ispitivanjem njihove tvrdoće. Dobijeni rezultati su pokazali da TiO2 nanočestice površinski modifikovane iminom ne utiču značajno na temperaturu ostakljivanja epoksidne smole, da usporavaju termooksidativnu degradaciju u prvom stupnju i da povećavaju tvrdoću umrežene epoksidne smole.",
publisher = "Univerzitet u Nišu - Tehnološki fakultet, Leskovac",
journal = "Advanced Technologies",
title = "Titanium dioxide nanoparticles surface modified with imine as fillers for epoxy resin, Nanočestice titan-dioksida površinski modifikovane iminom kao punioci za epoksidnu smolu",
pages = "53-46",
number = "2",
volume = "7",
doi = "10.5937/SavTeh1802046D"
}

Džunuzović, E., Ćirjaković, S., Kovač, T., Tomić, M., Dapčević, A.,& Džunuzović, J.. (2018). Titanium dioxide nanoparticles surface modified with imine as fillers for epoxy resin. in Advanced Technologies
Univerzitet u Nišu - Tehnološki fakultet, Leskovac., 7(2), 46-53.
https://doi.org/10.5937/SavTeh1802046D

Džunuzović E, Ćirjaković S, Kovač T, Tomić M, Dapčević A, Džunuzović J. Titanium dioxide nanoparticles surface modified with imine as fillers for epoxy resin. in Advanced Technologies. 2018;7(2):46-53.
doi:10.5937/SavTeh1802046D .

Džunuzović, Enis, Ćirjaković, Stefan, Kovač, Tijana, Tomić, Miloš, Dapčević, Aleksandra, Džunuzović, Jasna, "Titanium dioxide nanoparticles surface modified with imine as fillers for epoxy resin" in Advanced Technologies, 7, no. 2 (2018):46-53,
https://doi.org/10.5937/SavTeh1802046D . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Spasojević, Pavle
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Popović, Ivanka
AU  - Džunuzović, Enis
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3870
AB  - Alkyd resin/TiO2 nanocomposites (NC) were prepared from short oil alkyd resin and TiO2 nanoparticles (NPs) surface modified with in situ formed imine ligand, based on 3,4-dihydroxybenzaldehyde and oleylamine, or with three gallic acid esters. The short oil alkyd resin was synthesized from sunflower oil, phthalic anhydride, and trimethylolpropane. Unmodified and surface modified TiO2 NPs were examined by transmission electron microscopy. Rheological investigation revealed that prepared dispersions have higher dynamic viscosity than pure alkyd resin. Using different characterization methods it was obtained that NCs have similar thermooxidative stability as alkyd resin, lower glass transition temperature, better barrier properties, enhanced hardness, better chemical resistance, and lower adhesion to the metal, except in the case of NC prepared using TiO2 NPs surface modified with imine, which exhibited better adhesion to the metal than pure alkyd resin.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Preparation and Properties of Short Oil Alkyd Resin/TiO2 Nanocomposites Based on Surface Modified TiO2 Nanoparticles
EP  - 1499
IS  - 5
SP  - 1488
VL  - 39
DO  - 10.1002/pc.24089
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Spasojević, Pavle and Marinović-Cincović, Milena and Jeremić, Katarina B. and Popović, Ivanka and Džunuzović, Enis",
year = "2018",
abstract = "Alkyd resin/TiO2 nanocomposites (NC) were prepared from short oil alkyd resin and TiO2 nanoparticles (NPs) surface modified with in situ formed imine ligand, based on 3,4-dihydroxybenzaldehyde and oleylamine, or with three gallic acid esters. The short oil alkyd resin was synthesized from sunflower oil, phthalic anhydride, and trimethylolpropane. Unmodified and surface modified TiO2 NPs were examined by transmission electron microscopy. Rheological investigation revealed that prepared dispersions have higher dynamic viscosity than pure alkyd resin. Using different characterization methods it was obtained that NCs have similar thermooxidative stability as alkyd resin, lower glass transition temperature, better barrier properties, enhanced hardness, better chemical resistance, and lower adhesion to the metal, except in the case of NC prepared using TiO2 NPs surface modified with imine, which exhibited better adhesion to the metal than pure alkyd resin.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Preparation and Properties of Short Oil Alkyd Resin/TiO2 Nanocomposites Based on Surface Modified TiO2 Nanoparticles",
pages = "1499-1488",
number = "5",
volume = "39",
doi = "10.1002/pc.24089"
}

Radoman, T. S., Džunuzović, J., Spasojević, P., Marinović-Cincović, M., Jeremić, K. B., Popović, I.,& Džunuzović, E.. (2018). Preparation and Properties of Short Oil Alkyd Resin/TiO2 Nanocomposites Based on Surface Modified TiO2 Nanoparticles. in Polymer Composites
Wiley, Hoboken., 39(5), 1488-1499.
https://doi.org/10.1002/pc.24089

Radoman TS, Džunuzović J, Spasojević P, Marinović-Cincović M, Jeremić KB, Popović I, Džunuzović E. Preparation and Properties of Short Oil Alkyd Resin/TiO2 Nanocomposites Based on Surface Modified TiO2 Nanoparticles. in Polymer Composites. 2018;39(5):1488-1499.
doi:10.1002/pc.24089 .

Radoman, Tijana S., Džunuzović, Jasna, Spasojević, Pavle, Marinović-Cincović, Milena, Jeremić, Katarina B., Popović, Ivanka, Džunuzović, Enis, "Preparation and Properties of Short Oil Alkyd Resin/TiO2 Nanocomposites Based on Surface Modified TiO2 Nanoparticles" in Polymer Composites, 39, no. 5 (2018):1488-1499,
https://doi.org/10.1002/pc.24089 . .

TY  - JOUR
AU  - Kovač, Tijana
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Milićević, Bojana R.
AU  - Sredojević, Dušan
AU  - Brothers, Edward N.
AU  - Nedeljković, Jovan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3865
AB  - Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B-6: A comparative experimental and DFT study
EP  - 909
IS  - 7-8
SP  - 899
VL  - 83
DO  - 10.2298/JSC180131044K
ER  - 

@article{
author = "Kovač, Tijana and Džunuzović, Enis and Džunuzović, Jasna and Milićević, Bojana R. and Sredojević, Dušan and Brothers, Edward N. and Nedeljković, Jovan",
year = "2018",
abstract = "Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B-6: A comparative experimental and DFT study",
pages = "909-899",
number = "7-8",
volume = "83",
doi = "10.2298/JSC180131044K"
}

Kovač, T., Džunuzović, E., Džunuzović, J., Milićević, B. R., Sredojević, D., Brothers, E. N.,& Nedeljković, J.. (2018). Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B-6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 83(7-8), 899-909.
https://doi.org/10.2298/JSC180131044K

Kovač T, Džunuzović E, Džunuzović J, Milićević BR, Sredojević D, Brothers EN, Nedeljković J. Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B-6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society. 2018;83(7-8):899-909.
doi:10.2298/JSC180131044K .

Kovač, Tijana, Džunuzović, Enis, Džunuzović, Jasna, Milićević, Bojana R., Sredojević, Dušan, Brothers, Edward N., Nedeljković, Jovan, "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B-6: A comparative experimental and DFT study" in Journal of the Serbian Chemical Society, 83, no. 7-8 (2018):899-909,
https://doi.org/10.2298/JSC180131044K . .

TY  - JOUR
AU  - Rusmirović, Jelena
AU  - Radoman, Tijana S.
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Markovski, Jasmina
AU  - Spasojević, Pavle
AU  - Marinković, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3748
AB  - Unsaturated polyester resin (UPe)-based nanocomposites and fumed silica Aerosil R812S, R805 and R816, and R200 modified with phenyl terminal group, R200NPh, were prepared. UPe resins were synthesized from maleic anhydride and products of glycolysis, obtained by polyethylene terephthalate depolymerization with dipropylene glycol in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by acid, hydroxyl, and iodine values and by FTIR and NMR analysis. The microstructural analysis of the prepared nanocomposites, performed by using transmission electron microscopy, confirmed that silica nanoparticles formed chain-like aggregates in the polymer matrix. The presence of modified silica nanoparticles had no influence on the glass transition temperature and thermal stability of polyester matrix. The tensile modulus, stress at break, and hardness of cured products increased with increasing silica content. The impact strength of cured samples was not influenced by the silica content.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate
EP  - 554
IS  - 3
SP  - 538
VL  - 38
DO  - 10.1002/pc.23613
ER  - 

@article{
author = "Rusmirović, Jelena and Radoman, Tijana S. and Džunuzović, Enis and Džunuzović, Jasna and Markovski, Jasmina and Spasojević, Pavle and Marinković, Aleksandar",
year = "2017",
abstract = "Unsaturated polyester resin (UPe)-based nanocomposites and fumed silica Aerosil R812S, R805 and R816, and R200 modified with phenyl terminal group, R200NPh, were prepared. UPe resins were synthesized from maleic anhydride and products of glycolysis, obtained by polyethylene terephthalate depolymerization with dipropylene glycol in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by acid, hydroxyl, and iodine values and by FTIR and NMR analysis. The microstructural analysis of the prepared nanocomposites, performed by using transmission electron microscopy, confirmed that silica nanoparticles formed chain-like aggregates in the polymer matrix. The presence of modified silica nanoparticles had no influence on the glass transition temperature and thermal stability of polyester matrix. The tensile modulus, stress at break, and hardness of cured products increased with increasing silica content. The impact strength of cured samples was not influenced by the silica content.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate",
pages = "554-538",
number = "3",
volume = "38",
doi = "10.1002/pc.23613"
}

Rusmirović, J., Radoman, T. S., Džunuzović, E., Džunuzović, J., Markovski, J., Spasojević, P.,& Marinković, A.. (2017). Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate. in Polymer Composites
Wiley, Hoboken., 38(3), 538-554.
https://doi.org/10.1002/pc.23613

Rusmirović J, Radoman TS, Džunuzović E, Džunuzović J, Markovski J, Spasojević P, Marinković A. Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate. in Polymer Composites. 2017;38(3):538-554.
doi:10.1002/pc.23613 .

Rusmirović, Jelena, Radoman, Tijana S., Džunuzović, Enis, Džunuzović, Jasna, Markovski, Jasmina, Spasojević, Pavle, Marinković, Aleksandar, "Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate" in Polymer Composites, 38, no. 3 (2017):538-554,
https://doi.org/10.1002/pc.23613 . .

TY  - JOUR
AU  - Rusmirović, Jelena
AU  - Trifković, Kata T.
AU  - Bugarski, Branko
AU  - Pavlović, Vladimir B.
AU  - Džunuzović, Jasna
AU  - Tomić, Miloš
AU  - Marinković, Aleksandar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3396
AB  - Influences of the vinyl modified nanosilica Aerosil (R) 380, i.e., vinyl and methacryloyl silane coupling agent and linseed oil fatty acids (BD) reactive residues, on the mechanical properties of the unsaturated polyester resins (UPes) based nanocomposites, was studied. The polycondensation of maleic anhydride and products of poly(ethylene terephthalate) (PET) depolymerization with propylene glycol, with and without separation of ethylene glycol, yields UPe1 and UPe2 resin, respectively. The hydroxyl terminated PET depolymerization products (glycolyzates) and UPes were characterized by acid and hydroxyl values, Fourier Transform Infrared (FTIR) and nuclear magneti resonance (NMR) spectroscopies. Transmission electron microscopy (TEM) confirmed that silica nanoparticles formed domains of aggregates in the polymer matrix. An increase from 195 to 247% of stress at break (sigma(b)), and from 109 to 131% of impact strength (sigma(i)) of UPes based nanocomposites was obtained for 1 wt% addition of vinyl modified silica. Flexural strength (sigma(f)) increase from 106 to 156% for both UPes based nanocomposites with 1 wt% addition of BD modified silica. Cross-linking density (nu), storage modulus (G'), tan delta and T-g of the nanocomposite were determined from the dynamic mechanical testing and discussed in relation to the structure of silica modification.
PB  - Budapest Univ Technol & Econ, Budapest
T2  - Express Polymer Letters
T1  - High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties
EP  - 159
IS  - 2
SP  - 139
VL  - 10
DO  - 10.3144/expresspolymlett.2016.14
ER  - 

@article{
author = "Rusmirović, Jelena and Trifković, Kata T. and Bugarski, Branko and Pavlović, Vladimir B. and Džunuzović, Jasna and Tomić, Miloš and Marinković, Aleksandar",
year = "2016",
abstract = "Influences of the vinyl modified nanosilica Aerosil (R) 380, i.e., vinyl and methacryloyl silane coupling agent and linseed oil fatty acids (BD) reactive residues, on the mechanical properties of the unsaturated polyester resins (UPes) based nanocomposites, was studied. The polycondensation of maleic anhydride and products of poly(ethylene terephthalate) (PET) depolymerization with propylene glycol, with and without separation of ethylene glycol, yields UPe1 and UPe2 resin, respectively. The hydroxyl terminated PET depolymerization products (glycolyzates) and UPes were characterized by acid and hydroxyl values, Fourier Transform Infrared (FTIR) and nuclear magneti resonance (NMR) spectroscopies. Transmission electron microscopy (TEM) confirmed that silica nanoparticles formed domains of aggregates in the polymer matrix. An increase from 195 to 247% of stress at break (sigma(b)), and from 109 to 131% of impact strength (sigma(i)) of UPes based nanocomposites was obtained for 1 wt% addition of vinyl modified silica. Flexural strength (sigma(f)) increase from 106 to 156% for both UPes based nanocomposites with 1 wt% addition of BD modified silica. Cross-linking density (nu), storage modulus (G'), tan delta and T-g of the nanocomposite were determined from the dynamic mechanical testing and discussed in relation to the structure of silica modification.",
publisher = "Budapest Univ Technol & Econ, Budapest",
journal = "Express Polymer Letters",
title = "High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties",
pages = "159-139",
number = "2",
volume = "10",
doi = "10.3144/expresspolymlett.2016.14"
}

Rusmirović, J., Trifković, K. T., Bugarski, B., Pavlović, V. B., Džunuzović, J., Tomić, M.,& Marinković, A.. (2016). High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties. in Express Polymer Letters
Budapest Univ Technol & Econ, Budapest., 10(2), 139-159.
https://doi.org/10.3144/expresspolymlett.2016.14

Rusmirović J, Trifković KT, Bugarski B, Pavlović VB, Džunuzović J, Tomić M, Marinković A. High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties. in Express Polymer Letters. 2016;10(2):139-159.
doi:10.3144/expresspolymlett.2016.14 .

Rusmirović, Jelena, Trifković, Kata T., Bugarski, Branko, Pavlović, Vladimir B., Džunuzović, Jasna, Tomić, Miloš, Marinković, Aleksandar, "High performance unsaturated polyester based nanocomposites: Effect of vinyl modified nanosilica on mechanical properties" in Express Polymer Letters, 10, no. 2 (2016):139-159,
https://doi.org/10.3144/expresspolymlett.2016.14 . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Grgur, Branimir
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Miličević, Dejan S.
AU  - Džunuzović, Enis
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3345
AB  - Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6
EP  - 355
SP  - 346
VL  - 99
DO  - 10.1016/j.porgcoat.2016.06.014
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Grgur, Branimir and Gvozdenović, Milica and Jugović, Branimir and Miličević, Dejan S. and Džunuzović, Enis",
year = "2016",
abstract = "Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6",
pages = "355-346",
volume = "99",
doi = "10.1016/j.porgcoat.2016.06.014"
}

Radoman, T. S., Džunuzović, J., Grgur, B., Gvozdenović, M., Jugović, B., Miličević, D. S.,& Džunuzović, E.. (2016). Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 99, 346-355.
https://doi.org/10.1016/j.porgcoat.2016.06.014

Radoman TS, Džunuzović J, Grgur B, Gvozdenović M, Jugović B, Miličević DS, Džunuzović E. Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings. 2016;99:346-355.
doi:10.1016/j.porgcoat.2016.06.014 .

Radoman, Tijana S., Džunuzović, Jasna, Grgur, Branimir, Gvozdenović, Milica, Jugović, Branimir, Miličević, Dejan S., Džunuzović, Enis, "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6" in Progress in Organic Coatings, 99 (2016):346-355,
https://doi.org/10.1016/j.porgcoat.2016.06.014 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Kovač, Tijana
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3453
AB  - The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Physical Chemistry C
T1  - Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles
EP  - 18569
IS  - 33
SP  - 18560
VL  - 120
DO  - 10.1021/acs.jpcc.6b04293
ER  - 

@article{
author = "Vukoje, Ivana D. and Kovač, Tijana and Džunuzović, Jasna and Džunuzović, Enis and Lončarević, Davor and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2016",
abstract = "The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Physical Chemistry C",
title = "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles",
pages = "18569-18560",
number = "33",
volume = "120",
doi = "10.1021/acs.jpcc.6b04293"
}

Vukoje, I. D., Kovač, T., Džunuzović, J., Džunuzović, E., Lončarević, D., Ahrenkiel, S. P.,& Nedeljković, J.. (2016). Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry C
Amer Chemical Soc, Washington., 120(33), 18560-18569.
https://doi.org/10.1021/acs.jpcc.6b04293

Vukoje ID, Kovač T, Džunuzović J, Džunuzović E, Lončarević D, Ahrenkiel SP, Nedeljković J. Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry C. 2016;120(33):18560-18569.
doi:10.1021/acs.jpcc.6b04293 .

Vukoje, Ivana D., Kovač, Tijana, Džunuzović, Jasna, Džunuzović, Enis, Lončarević, Davor, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles" in Journal of Physical Chemistry C, 120, no. 33 (2016):18560-18569,
https://doi.org/10.1021/acs.jpcc.6b04293 . .

TY  - JOUR
AU  - Spasojević, Pavle
AU  - Panić, Vesna
AU  - Džunuzović, Jasna
AU  - Marinković, Aleksandar
AU  - Woortman, A J J
AU  - Loos, Katja
AU  - Popović, Ivanka
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3119
AB  - The glycolytic recycling of waste PET presents a challenge for the production of secondary value-added products, such as alkyd resins. A way to overcome the unsatisfactory mechanical, drying and chemical resistance properties of alkyds obtained from difunctional glycolyzates was proposed. Waste PET was glycolyzed using multifunctional alcohols: glycerol (G), trimethylolethane (TME), trimethylolpropane (TMP) and pentaerythritol (PE), giving tetra-and hexa-functional glycolyzates and, for comparison, using diethylene glycol (DEG), propylene glycol (PG) and dipropylene glycol (DPG) giving di-functional glycolyzates. The obtained glycolyzates were examined by H-1 and C-13 NMR, FTIR spectroscopy and elemental analysis and further used in the synthesis of alkyd resins. The properties of the prepared alkyd resins (acid, hydroxyl and iodine values, color, average molar masses and molar mass distributions, viscosity, drying time, hardness, flexibility, gloss, adhesion and chemical resistance) were investigated with respect to the functionality and the structure of the used glycolyzates. Alkyd resins derived from multifunctional glycolyzates (TME and TMP) showed considerably enhanced properties compared to those produced from difunctional glycolyzates and also to conventional general purpose resins.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - High performance alkyd resins synthesized from postconsumer PET bottles
EP  - 62283
IS  - 76
SP  - 62273
VL  - 5
DO  - 10.1039/c5ra11777a
ER  - 

@article{
author = "Spasojević, Pavle and Panić, Vesna and Džunuzović, Jasna and Marinković, Aleksandar and Woortman, A J J and Loos, Katja and Popović, Ivanka",
year = "2015",
abstract = "The glycolytic recycling of waste PET presents a challenge for the production of secondary value-added products, such as alkyd resins. A way to overcome the unsatisfactory mechanical, drying and chemical resistance properties of alkyds obtained from difunctional glycolyzates was proposed. Waste PET was glycolyzed using multifunctional alcohols: glycerol (G), trimethylolethane (TME), trimethylolpropane (TMP) and pentaerythritol (PE), giving tetra-and hexa-functional glycolyzates and, for comparison, using diethylene glycol (DEG), propylene glycol (PG) and dipropylene glycol (DPG) giving di-functional glycolyzates. The obtained glycolyzates were examined by H-1 and C-13 NMR, FTIR spectroscopy and elemental analysis and further used in the synthesis of alkyd resins. The properties of the prepared alkyd resins (acid, hydroxyl and iodine values, color, average molar masses and molar mass distributions, viscosity, drying time, hardness, flexibility, gloss, adhesion and chemical resistance) were investigated with respect to the functionality and the structure of the used glycolyzates. Alkyd resins derived from multifunctional glycolyzates (TME and TMP) showed considerably enhanced properties compared to those produced from difunctional glycolyzates and also to conventional general purpose resins.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "High performance alkyd resins synthesized from postconsumer PET bottles",
pages = "62283-62273",
number = "76",
volume = "5",
doi = "10.1039/c5ra11777a"
}

Spasojević, P., Panić, V., Džunuzović, J., Marinković, A., Woortman, A. J. J., Loos, K.,& Popović, I.. (2015). High performance alkyd resins synthesized from postconsumer PET bottles. in RSC Advances
Royal Soc Chemistry, Cambridge., 5(76), 62273-62283.
https://doi.org/10.1039/c5ra11777a

Spasojević P, Panić V, Džunuzović J, Marinković A, Woortman AJJ, Loos K, Popović I. High performance alkyd resins synthesized from postconsumer PET bottles. in RSC Advances. 2015;5(76):62273-62283.
doi:10.1039/c5ra11777a .

Spasojević, Pavle, Panić, Vesna, Džunuzović, Jasna, Marinković, Aleksandar, Woortman, A J J, Loos, Katja, Popović, Ivanka, "High performance alkyd resins synthesized from postconsumer PET bottles" in RSC Advances, 5, no. 76 (2015):62273-62283,
https://doi.org/10.1039/c5ra11777a . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Trifković, Kata T.
AU  - Palija, T
AU  - Marinković, Aleksandar
AU  - Bugarski, Branko
AU  - Džunuzović, Enis
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3108
AB  - Novel soy alkyd-based nanocomposites (NCs) were prepared using TiO2 nanoparticles (NPs) surface modified with different gallates, and for the first time with imine obtained from 3,4-dihydroxybenzaldehyde and oleylamine (DHBAOA). Unmodified and surface modified anatase TiO2 NPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-Vis) spectroscopy, while the amount of adsorbed ligands was calculated from thermogravimetric analysis (TGA) results. Surface modification of TiO2 NPs was confirmed by FTIR and UV-Vis spectra. The influence of the TiO2 surface modification on the dispersion of TiO2 NPs in alkyd resin, thermal, barrier and mechanical properties and chemical resistance of alkyd resin/TiO2 NC coatings was investigated. The obtained results revealed that glass transition temperature of all investigated NCs is lower than for pure resin, that the presence of TiO2 NPs surface modified with gallates had no significant influence on the thermooxidative stability of alkyd resin, while TiO2-DHBAOA NPs slightly improved alkyd resin thermooxidative stability. Also, the presence of surface modified TiO2 NPs improved barrier properties, increased stress and strain at break and hardness and chemical resistance and decreased modulus of elasticity and abrasion resistance of alkyd resin.
PB  - Budapest Univ Technol & Econ, Budapest
T2  - Express Polymer Letters
T1  - Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings
EP  - 931
IS  - 10
SP  - 916
VL  - 9
DO  - 10.3144/expresspolymlett.2015.83
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Trifković, Kata T. and Palija, T and Marinković, Aleksandar and Bugarski, Branko and Džunuzović, Enis",
year = "2015",
abstract = "Novel soy alkyd-based nanocomposites (NCs) were prepared using TiO2 nanoparticles (NPs) surface modified with different gallates, and for the first time with imine obtained from 3,4-dihydroxybenzaldehyde and oleylamine (DHBAOA). Unmodified and surface modified anatase TiO2 NPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-Vis) spectroscopy, while the amount of adsorbed ligands was calculated from thermogravimetric analysis (TGA) results. Surface modification of TiO2 NPs was confirmed by FTIR and UV-Vis spectra. The influence of the TiO2 surface modification on the dispersion of TiO2 NPs in alkyd resin, thermal, barrier and mechanical properties and chemical resistance of alkyd resin/TiO2 NC coatings was investigated. The obtained results revealed that glass transition temperature of all investigated NCs is lower than for pure resin, that the presence of TiO2 NPs surface modified with gallates had no significant influence on the thermooxidative stability of alkyd resin, while TiO2-DHBAOA NPs slightly improved alkyd resin thermooxidative stability. Also, the presence of surface modified TiO2 NPs improved barrier properties, increased stress and strain at break and hardness and chemical resistance and decreased modulus of elasticity and abrasion resistance of alkyd resin.",
publisher = "Budapest Univ Technol & Econ, Budapest",
journal = "Express Polymer Letters",
title = "Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings",
pages = "931-916",
number = "10",
volume = "9",
doi = "10.3144/expresspolymlett.2015.83"
}

Radoman, T. S., Džunuzović, J., Trifković, K. T., Palija, T., Marinković, A., Bugarski, B.,& Džunuzović, E.. (2015). Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings. in Express Polymer Letters
Budapest Univ Technol & Econ, Budapest., 9(10), 916-931.
https://doi.org/10.3144/expresspolymlett.2015.83

Radoman TS, Džunuzović J, Trifković KT, Palija T, Marinković A, Bugarski B, Džunuzović E. Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings. in Express Polymer Letters. 2015;9(10):916-931.
doi:10.3144/expresspolymlett.2015.83 .

Radoman, Tijana S., Džunuzović, Jasna, Trifković, Kata T., Palija, T, Marinković, Aleksandar, Bugarski, Branko, Džunuzović, Enis, "Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings" in Express Polymer Letters, 9, no. 10 (2015):916-931,
https://doi.org/10.3144/expresspolymlett.2015.83 . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Terzić, Nenad
AU  - Spasojević, Pavle
AU  - Džunuzović, Jasna
AU  - Marinković, Aleksandar
AU  - Jeremić, Katarina B.
AU  - Džunuzović, Enis
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2936
AB  - TiO2 nanoparticles, obtained by acid catalyzed hydrolysis of titanium isopropoxide, were surface modified by three gallic acid esters with different hydrophobic part length: octyl, decyl and lauryl gallate, and then used to prepare TiO2/epoxy nanocomposites. The characterization of the surface modified TiO2 nanoparticles was performed by FTIR and UV-Vis spectroscopy. The influence of different gallic acid esters and content of modified TiO2 nanoparticles on the glass transition temperature (Tg), rheological, barrier and mechanical properties of the nanocomposites was investigated by DSC, DMA, water vapor permeability test and König pendulum. The presence of the surface modified TiO2 nanoparticles in epoxy resin caused the increase of Tg and decrease of the water vapor permeability. However, the length of the nonpolar gallate part showed no effect on Tg of the synthesized nanocomposites, while the increase of the nanofiller content resulted in the increase of Tg. With increasing the hydrophobic part chain length of gallate ligand, the water vapor transmission rate decreased, while the hardness of the nanocomposites did not change.
AB  - U ovom radu, TiO2 nanočestice su dobijene kiselo katalizovanom hidrolizom titanijum izopropoksida, a njihova površinska modifikacija izvedena je estrima galne kiseline sa različitom dužinom hidrofobnog dela lanca: oktil, decil i lauril galat. Površinski modifikovane TiO2 nanočestice su zatim korišćene za pripremu TiO2/epoksi nanokompozita. Karakterizacija površinski modifikovanih TiO2 nanočestica je izvršena pomoću FTIR i UV-Vis spektroskopije. Ispitan je uticaj različitih estara galne kiseline korišćenih za površinsku modifikaciju i sadržaj modifikovanih TiO2 nanočestica na temperaturu ostakljivanja, reološka, barijerna i mehanička svojstva sintetisanih nanokompozita pomoću diferencijalne skenirajuće kalorimetrije, dinamičko mehaničke analize, testa propustljivosti za vodenu paru i König klatna. Prisustvo površinski modifikovanih TiO2 nanočestica u epoksidnoj smoli dovodi do povećanja temperature ostakljivanja i smanjenja propustljivosti vodene pare u poređenju sa čistom epoksidnom smolom. Međutim, različita dužina nepolarnog dela galata nije pokazala uticaj na temperaturu ostakljivanja sintetisanih nanokompozita, dok je povećanje sadržaja nanopunila dovelo do porasta temperature ostakljivanja. Sa povećanjem dužine hidrofobnog dela galata, brzina transporta vodene pare smanjena je za ispitivane nanokompozite, dok se tvrdoća nanokompozitnih prevlaka na bazi epoksidne smole ne razlikuje.
PB  - Univerzitet u Nišu - Tehnološki fakultet, Leskovac
T2  - Advanced Technologies
T1  - Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites
T1  - Sinteza i karakterizacija nanokompozita na bazi površinski modifikovanih nanočestica titan-dioksida i epoksidne smole
EP  - 15
IS  - 1
SP  - 7
VL  - 4
DO  - 10.5937/savteh1501007R
ER  - 

@article{
author = "Radoman, Tijana S. and Terzić, Nenad and Spasojević, Pavle and Džunuzović, Jasna and Marinković, Aleksandar and Jeremić, Katarina B. and Džunuzović, Enis",
year = "2015",
abstract = "TiO2 nanoparticles, obtained by acid catalyzed hydrolysis of titanium isopropoxide, were surface modified by three gallic acid esters with different hydrophobic part length: octyl, decyl and lauryl gallate, and then used to prepare TiO2/epoxy nanocomposites. The characterization of the surface modified TiO2 nanoparticles was performed by FTIR and UV-Vis spectroscopy. The influence of different gallic acid esters and content of modified TiO2 nanoparticles on the glass transition temperature (Tg), rheological, barrier and mechanical properties of the nanocomposites was investigated by DSC, DMA, water vapor permeability test and König pendulum. The presence of the surface modified TiO2 nanoparticles in epoxy resin caused the increase of Tg and decrease of the water vapor permeability. However, the length of the nonpolar gallate part showed no effect on Tg of the synthesized nanocomposites, while the increase of the nanofiller content resulted in the increase of Tg. With increasing the hydrophobic part chain length of gallate ligand, the water vapor transmission rate decreased, while the hardness of the nanocomposites did not change., U ovom radu, TiO2 nanočestice su dobijene kiselo katalizovanom hidrolizom titanijum izopropoksida, a njihova površinska modifikacija izvedena je estrima galne kiseline sa različitom dužinom hidrofobnog dela lanca: oktil, decil i lauril galat. Površinski modifikovane TiO2 nanočestice su zatim korišćene za pripremu TiO2/epoksi nanokompozita. Karakterizacija površinski modifikovanih TiO2 nanočestica je izvršena pomoću FTIR i UV-Vis spektroskopije. Ispitan je uticaj različitih estara galne kiseline korišćenih za površinsku modifikaciju i sadržaj modifikovanih TiO2 nanočestica na temperaturu ostakljivanja, reološka, barijerna i mehanička svojstva sintetisanih nanokompozita pomoću diferencijalne skenirajuće kalorimetrije, dinamičko mehaničke analize, testa propustljivosti za vodenu paru i König klatna. Prisustvo površinski modifikovanih TiO2 nanočestica u epoksidnoj smoli dovodi do povećanja temperature ostakljivanja i smanjenja propustljivosti vodene pare u poređenju sa čistom epoksidnom smolom. Međutim, različita dužina nepolarnog dela galata nije pokazala uticaj na temperaturu ostakljivanja sintetisanih nanokompozita, dok je povećanje sadržaja nanopunila dovelo do porasta temperature ostakljivanja. Sa povećanjem dužine hidrofobnog dela galata, brzina transporta vodene pare smanjena je za ispitivane nanokompozite, dok se tvrdoća nanokompozitnih prevlaka na bazi epoksidne smole ne razlikuje.",
publisher = "Univerzitet u Nišu - Tehnološki fakultet, Leskovac",
journal = "Advanced Technologies",
title = "Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites, Sinteza i karakterizacija nanokompozita na bazi površinski modifikovanih nanočestica titan-dioksida i epoksidne smole",
pages = "15-7",
number = "1",
volume = "4",
doi = "10.5937/savteh1501007R"
}

Radoman, T. S., Terzić, N., Spasojević, P., Džunuzović, J., Marinković, A., Jeremić, K. B.,& Džunuzović, E.. (2015). Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites. in Advanced Technologies
Univerzitet u Nišu - Tehnološki fakultet, Leskovac., 4(1), 7-15.
https://doi.org/10.5937/savteh1501007R

Radoman TS, Terzić N, Spasojević P, Džunuzović J, Marinković A, Jeremić KB, Džunuzović E. Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites. in Advanced Technologies. 2015;4(1):7-15.
doi:10.5937/savteh1501007R .

Radoman, Tijana S., Terzić, Nenad, Spasojević, Pavle, Džunuzović, Jasna, Marinković, Aleksandar, Jeremić, Katarina B., Džunuzović, Enis, "Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites" in Advanced Technologies, 4, no. 1 (2015):7-15,
https://doi.org/10.5937/savteh1501007R . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Jeremić, Katarina B.
AU  - Grgur, Branimir
AU  - Miličević, Dejan S.
AU  - Popović, Ivanka
AU  - Džunuzović, Enis
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2695
AB  - Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism.
PB  - Elsevier Sci Ltd, Oxford
T2  - Materials & Design
T1  - Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters
EP  - 167
SP  - 158
VL  - 62
DO  - 10.1016/j.matdes.2014.05.015
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Jeremić, Katarina B. and Grgur, Branimir and Miličević, Dejan S. and Popović, Ivanka and Džunuzović, Enis",
year = "2014",
abstract = "Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Materials & Design",
title = "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters",
pages = "167-158",
volume = "62",
doi = "10.1016/j.matdes.2014.05.015"
}

Radoman, T. S., Džunuzović, J., Jeremić, K. B., Grgur, B., Miličević, D. S., Popović, I.,& Džunuzović, E.. (2014). Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials & Design
Elsevier Sci Ltd, Oxford., 62, 158-167.
https://doi.org/10.1016/j.matdes.2014.05.015

Radoman TS, Džunuzović J, Jeremić KB, Grgur B, Miličević DS, Popović I, Džunuzović E. Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials & Design. 2014;62:158-167.
doi:10.1016/j.matdes.2014.05.015 .

Radoman, Tijana S., Džunuzović, Jasna, Jeremić, Katarina B., Grgur, Branimir, Miličević, Dejan S., Popović, Ivanka, Džunuzović, Enis, "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters" in Materials & Design, 62 (2014):158-167,
https://doi.org/10.1016/j.matdes.2014.05.015 . .

TY  - CHAP
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2565
AB  - Polystyrene, one of the most important material in the modern plastic industry and one of the major synthetic polymer in use today, offers an extremely broad range of applications, due to its good physical properties and low-cost. Significant change of mechanical, rheological, thermal, optical, fire retardancy and barrier properties of polystyrene has been obtained by its combination with different nanoparticles. Due to the extremely high interface area between nanoparticles and polystyrene, some new properties could also be generated, which are often necessary to provide in order to meet current and future demands for various significant applications in different fields. In this review, recent advances on nanocomposites based on polystyrene and different kinds of nanoparticles will be presented through the results obtained by authors of this chapter and results given in other literature reports. This chapter reviews the current understanding of polystyrene based nanocomposites with three particular topics: (i) the preparation conditions of nanoparticles for their efficient, homogeneous incorporation in polystyrene matrix, (ii) different approaches for the synthesis of nanocomposites based on polystyrene and (iii) the influence of the type, size and shape of incorporated nanoparticles on the properties of the polystyrene based nanocomposites. The potential applications of these nanocomposites are also highlighted.
T2  - Polystyrene: Synthesis, Characteristics and Applications
T1  - Synthesis and characterization of polystyrene based nanocomposites
EP  - 240
SP  - 201
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2565
ER  - 

@inbook{
author = "Vodnik, Vesna and Džunuzović, Enis and Džunuzović, Jasna",
year = "2014",
abstract = "Polystyrene, one of the most important material in the modern plastic industry and one of the major synthetic polymer in use today, offers an extremely broad range of applications, due to its good physical properties and low-cost. Significant change of mechanical, rheological, thermal, optical, fire retardancy and barrier properties of polystyrene has been obtained by its combination with different nanoparticles. Due to the extremely high interface area between nanoparticles and polystyrene, some new properties could also be generated, which are often necessary to provide in order to meet current and future demands for various significant applications in different fields. In this review, recent advances on nanocomposites based on polystyrene and different kinds of nanoparticles will be presented through the results obtained by authors of this chapter and results given in other literature reports. This chapter reviews the current understanding of polystyrene based nanocomposites with three particular topics: (i) the preparation conditions of nanoparticles for their efficient, homogeneous incorporation in polystyrene matrix, (ii) different approaches for the synthesis of nanocomposites based on polystyrene and (iii) the influence of the type, size and shape of incorporated nanoparticles on the properties of the polystyrene based nanocomposites. The potential applications of these nanocomposites are also highlighted.",
journal = "Polystyrene: Synthesis, Characteristics and Applications",
booktitle = "Synthesis and characterization of polystyrene based nanocomposites",
pages = "240-201",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2565"
}

Vodnik, V., Džunuzović, E.,& Džunuzović, J.. (2014). Synthesis and characterization of polystyrene based nanocomposites. in Polystyrene: Synthesis, Characteristics and Applications, 201-240.
https://hdl.handle.net/21.15107/rcub_technorep_2565

Vodnik V, Džunuzović E, Džunuzović J. Synthesis and characterization of polystyrene based nanocomposites. in Polystyrene: Synthesis, Characteristics and Applications. 2014;:201-240.
https://hdl.handle.net/21.15107/rcub_technorep_2565 .

Vodnik, Vesna, Džunuzović, Enis, Džunuzović, Jasna, "Synthesis and characterization of polystyrene based nanocomposites" in Polystyrene: Synthesis, Characteristics and Applications (2014):201-240,
https://hdl.handle.net/21.15107/rcub_technorep_2565 .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2796
AB  - Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Materials Research Bulletin
T1  - Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization
EP  - 439
SP  - 434
VL  - 49
DO  - 10.1016/j.materresbull.2013.09.029
ER  - 

@article{
author = "Vukoje, Ivana D. and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2014",
abstract = "Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Materials Research Bulletin",
title = "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization",
pages = "439-434",
volume = "49",
doi = "10.1016/j.materresbull.2013.09.029"
}

Vukoje, I. D., Vodnik, V., Džunuzović, J., Džunuzović, E., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2014). Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin
Pergamon-Elsevier Science Ltd, Oxford., 49, 434-439.
https://doi.org/10.1016/j.materresbull.2013.09.029

Vukoje ID, Vodnik V, Džunuzović J, Džunuzović E, Marinović-Cincović M, Jeremić KB, Nedeljković J. Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin. 2014;49:434-439.
doi:10.1016/j.materresbull.2013.09.029 .

Vukoje, Ivana D., Vodnik, Vesna, Džunuzović, Jasna, Džunuzović, Enis, Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization" in Materials Research Bulletin, 49 (2014):434-439,
https://doi.org/10.1016/j.materresbull.2013.09.029 . .

TY  - JOUR
AU  - Marinković, Aleksandar
AU  - Radoman, Tijana S.
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Spasojević, Pavle
AU  - Isailović, Bojana
AU  - Bugarski, Branko
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2309
AB  - Composites based on unsaturated polyester (UPe) resins and fumed silica AEROSIL® RY 50, NY 50, RX 50 and NAX 50, as well as graphite, TiO2 or organically modified clay CLOISITE 30B were prepared in order to investigate the influence of reinforcing agents on the mechanical properties of composites. Unsaturated polyester resins were synthesized from maleic anhydride and products of glycolysis, obtained by depolymerization of poly(ethylene terephthalate) with dipropylene glycol (UPe1 resin) and triethylene glycol (UPe2 resin) in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by FTIR spectroscopy, acid and hydroxyl values, and their mechanical properties were also examined. Significant increase of the tensile modulus, tensile strength and decrease of the elongation at break was observed for composites prepared after addition of 10 wt.% of graphite or 10 wt.% of TiO2 to the UPe resins, indicating strong interaction between matrix and filler particles. On the other hand, nanocomposites prepared using UPe2 and hydrophobically modified silica nanoparticles showed lower tensile strength and tensile modulus than polymer matrix. The presence of CLOISITE 30B had no significant influence on the mechanical properties of UPe1, while tensile strength and tensile modulus of UPe2 increased after adding 10 wt.% of clay.
AB  - U ovom radu sintetisani su kompoziti na bazi nezasićenih poliestarskih (UPe) smola i SiO2 (AEROSIL®:RY 50, NY 50, RX 50 i NAX 50), grafita, TiO2 ili organski modifikovane gline CLOISITE 30B u cilju ispitivanja uticaja punioca na mehanička svojstva kompozita. Nezasićene poliestarske smole su sintetisane polazeći od anhidrida maleinske kiseline i proizvoda glikolize dobijenih depolimerizacijom poli(etilen-tereftalata) sa dipropilen glikolom (UPe1 smola) ili trietilen glikolom (UPe2 smola) u prisustvu katalizatora tetrabutil titanata. Sintetisane nezasićene poliestarske smole su ispitane primenom FTIR spektroskopije, određen im je kiselinski i hidroksilni broj i ispitana su njihova mehanička svojstva. Molarna masa srednja po brojnoj vrednosti sintetisanih nezasićenih poliestarskih smola je između 1620-1630 g mol-1. Moduli istezanja i zatezna čvrstoća kompozita pripremljenih dodavanjem 10 mas.% grafita ili TiO2 nezasićenim poliestarskim smolama su značajno porasli u odnosu na čiste poliestre, dok se izduženje pri kidanju smanjilo, što ukazuje na postojanje jakih interakcija između matrice i čestica punioca. Sa druge strane, nanokompoziti sintetisani korišćenjem UPe2 i modifikovanih nanočestica SiO2 su imali manju zateznu čvrstoću i module istezanja nego čista nezasićena poliestarska smola. Pokazano je da prisustvo gline CLOISITE 30B nema značajan uticaj na mehanička svojstva smole UPe1, dok su vrednosti modula istezanja i zatezne čvrstoće UPe2 porasle nakon dodavanja 10 mas.% gline.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Mechanical properties of composites based on unsaturated polyester resins obtained by chemical recycling of poly(ethylene terephthalate)
T1  - Mehanička svojstva kompozita na bazi nezasićenih poliestarskih smola dobijenih hemijskom reciklažom poli(etilen-tereftalata)
EP  - 922
IS  - 6
SP  - 913
VL  - 67
DO  - 10.2298/HEMIND130930077M
ER  - 

@article{
author = "Marinković, Aleksandar and Radoman, Tijana S. and Džunuzović, Enis and Džunuzović, Jasna and Spasojević, Pavle and Isailović, Bojana and Bugarski, Branko",
year = "2013",
abstract = "Composites based on unsaturated polyester (UPe) resins and fumed silica AEROSIL® RY 50, NY 50, RX 50 and NAX 50, as well as graphite, TiO2 or organically modified clay CLOISITE 30B were prepared in order to investigate the influence of reinforcing agents on the mechanical properties of composites. Unsaturated polyester resins were synthesized from maleic anhydride and products of glycolysis, obtained by depolymerization of poly(ethylene terephthalate) with dipropylene glycol (UPe1 resin) and triethylene glycol (UPe2 resin) in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by FTIR spectroscopy, acid and hydroxyl values, and their mechanical properties were also examined. Significant increase of the tensile modulus, tensile strength and decrease of the elongation at break was observed for composites prepared after addition of 10 wt.% of graphite or 10 wt.% of TiO2 to the UPe resins, indicating strong interaction between matrix and filler particles. On the other hand, nanocomposites prepared using UPe2 and hydrophobically modified silica nanoparticles showed lower tensile strength and tensile modulus than polymer matrix. The presence of CLOISITE 30B had no significant influence on the mechanical properties of UPe1, while tensile strength and tensile modulus of UPe2 increased after adding 10 wt.% of clay., U ovom radu sintetisani su kompoziti na bazi nezasićenih poliestarskih (UPe) smola i SiO2 (AEROSIL®:RY 50, NY 50, RX 50 i NAX 50), grafita, TiO2 ili organski modifikovane gline CLOISITE 30B u cilju ispitivanja uticaja punioca na mehanička svojstva kompozita. Nezasićene poliestarske smole su sintetisane polazeći od anhidrida maleinske kiseline i proizvoda glikolize dobijenih depolimerizacijom poli(etilen-tereftalata) sa dipropilen glikolom (UPe1 smola) ili trietilen glikolom (UPe2 smola) u prisustvu katalizatora tetrabutil titanata. Sintetisane nezasićene poliestarske smole su ispitane primenom FTIR spektroskopije, određen im je kiselinski i hidroksilni broj i ispitana su njihova mehanička svojstva. Molarna masa srednja po brojnoj vrednosti sintetisanih nezasićenih poliestarskih smola je između 1620-1630 g mol-1. Moduli istezanja i zatezna čvrstoća kompozita pripremljenih dodavanjem 10 mas.% grafita ili TiO2 nezasićenim poliestarskim smolama su značajno porasli u odnosu na čiste poliestre, dok se izduženje pri kidanju smanjilo, što ukazuje na postojanje jakih interakcija između matrice i čestica punioca. Sa druge strane, nanokompoziti sintetisani korišćenjem UPe2 i modifikovanih nanočestica SiO2 su imali manju zateznu čvrstoću i module istezanja nego čista nezasićena poliestarska smola. Pokazano je da prisustvo gline CLOISITE 30B nema značajan uticaj na mehanička svojstva smole UPe1, dok su vrednosti modula istezanja i zatezne čvrstoće UPe2 porasle nakon dodavanja 10 mas.% gline.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Mechanical properties of composites based on unsaturated polyester resins obtained by chemical recycling of poly(ethylene terephthalate), Mehanička svojstva kompozita na bazi nezasićenih poliestarskih smola dobijenih hemijskom reciklažom poli(etilen-tereftalata)",
pages = "922-913",
number = "6",
volume = "67",
doi = "10.2298/HEMIND130930077M"
}

Marinković, A., Radoman, T. S., Džunuzović, E., Džunuzović, J., Spasojević, P., Isailović, B.,& Bugarski, B.. (2013). Mechanical properties of composites based on unsaturated polyester resins obtained by chemical recycling of poly(ethylene terephthalate). in Hemijska industrija
Association of Chemical Engineers of Serbia., 67(6), 913-922.
https://doi.org/10.2298/HEMIND130930077M

Marinković A, Radoman TS, Džunuzović E, Džunuzović J, Spasojević P, Isailović B, Bugarski B. Mechanical properties of composites based on unsaturated polyester resins obtained by chemical recycling of poly(ethylene terephthalate). in Hemijska industrija. 2013;67(6):913-922.
doi:10.2298/HEMIND130930077M .

Marinković, Aleksandar, Radoman, Tijana S., Džunuzović, Enis, Džunuzović, Jasna, Spasojević, Pavle, Isailović, Bojana, Bugarski, Branko, "Mechanical properties of composites based on unsaturated polyester resins obtained by chemical recycling of poly(ethylene terephthalate)" in Hemijska industrija, 67, no. 6 (2013):913-922,
https://doi.org/10.2298/HEMIND130930077M . .

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna
AU  - Jeremić, Katarina B.
AU  - Marinković, Aleksandar
AU  - Spasojević, Pavle
AU  - Popović, Ivanka
AU  - Džunuzović, Enis
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2308
AB  - Spherical TiO2 particles of different size were dispersed in alkyd resin based on soybean oil. Four samples of TiO2 particles were used, three commercial and one obtained by acid catalyzed hydrolysis of titanium tetraisopropoxide. The size of the synthesized nanoparticles was determined by transmission electron microscopy. Surface modification of TiO2 nanoparticles was performed with propyl gallate and lauryl gallate. The influence of the size of TiO2 nanoparticles, their concentration and type of the surface modification on the rheological properties of alkyd resin was investigated. The obtained results have shown that the viscosity of the prepared dispersions was higher than the viscosity of the pure resin, increases with decreasing particle diameter and decreases with frequency increase. Surface modified particles showed higher influence on the viscosity of alkyd resin than unmodified, because their hydrodynamic volume is higher due to the presence of the adsorbed gallates, leading to the increase of effective volume fraction of particles in dispersion. For the lowest TiO2 concentration, the viscosity was higher for the sample modified with lauryl gallate, due to the higher thickness of the adsorbed layer. The increase of concentration, because of less dispersion stability of the particles modified with propyl gallate, leads to particle agglomeration. The presence of agglomerates, which was confirmed by a change in the slope of the functional dependence of storage modulus on loss modulus, leads to a rapid increase in viscosity.
AB  - Sferne čestice TiO2 različitih veličina dispergovane su u alkidnoj smoli. Površinska modifikacija nanočestica TiO2 izvedena je propil galatom i lauril galatom. Ispitivan je uticaj veličine nanočestica TiO2, koncentracije, kao i vrste površinske modifikacije na reološka svojstva alkidne smole. Dobijeno je da je viskoznost pripremljenih disperzija veća od viskoznosti čiste smole, da raste sa smanjenjem prečnika čestica i opada sa povećanjem frekvencije. Površinski modifikovane čestice imaju veći uticaj na viskoznost alkidne smole nego nemodifikovane zbog povećanja efektivnog zapreminskog udela čestica u disperziji. Za najmanju koncentraciju TiO2 viskoznost je veća kada je modifikacija izvršena lauril galatom, dok sa povećanjem koncentracije, zbog manje disperzione stabilnosti čestica modifikovanih propil galatom, dolazi do njihove aglomerizacije i naglog povećanja viskoznosti.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - The influence of the size and surface modification of TIO2 nanoparticles on the rheological properties of alkyd resin
T1  - Uticaj veličine nanočestica TIO2 i njihove površinske modifikacije na reološka svojstva alkidne smole
EP  - 932
IS  - 6
SP  - 923
VL  - 67
DO  - 10.2298/HEMIND131106081R
ER  - 

@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna and Jeremić, Katarina B. and Marinković, Aleksandar and Spasojević, Pavle and Popović, Ivanka and Džunuzović, Enis",
year = "2013",
abstract = "Spherical TiO2 particles of different size were dispersed in alkyd resin based on soybean oil. Four samples of TiO2 particles were used, three commercial and one obtained by acid catalyzed hydrolysis of titanium tetraisopropoxide. The size of the synthesized nanoparticles was determined by transmission electron microscopy. Surface modification of TiO2 nanoparticles was performed with propyl gallate and lauryl gallate. The influence of the size of TiO2 nanoparticles, their concentration and type of the surface modification on the rheological properties of alkyd resin was investigated. The obtained results have shown that the viscosity of the prepared dispersions was higher than the viscosity of the pure resin, increases with decreasing particle diameter and decreases with frequency increase. Surface modified particles showed higher influence on the viscosity of alkyd resin than unmodified, because their hydrodynamic volume is higher due to the presence of the adsorbed gallates, leading to the increase of effective volume fraction of particles in dispersion. For the lowest TiO2 concentration, the viscosity was higher for the sample modified with lauryl gallate, due to the higher thickness of the adsorbed layer. The increase of concentration, because of less dispersion stability of the particles modified with propyl gallate, leads to particle agglomeration. The presence of agglomerates, which was confirmed by a change in the slope of the functional dependence of storage modulus on loss modulus, leads to a rapid increase in viscosity., Sferne čestice TiO2 različitih veličina dispergovane su u alkidnoj smoli. Površinska modifikacija nanočestica TiO2 izvedena je propil galatom i lauril galatom. Ispitivan je uticaj veličine nanočestica TiO2, koncentracije, kao i vrste površinske modifikacije na reološka svojstva alkidne smole. Dobijeno je da je viskoznost pripremljenih disperzija veća od viskoznosti čiste smole, da raste sa smanjenjem prečnika čestica i opada sa povećanjem frekvencije. Površinski modifikovane čestice imaju veći uticaj na viskoznost alkidne smole nego nemodifikovane zbog povećanja efektivnog zapreminskog udela čestica u disperziji. Za najmanju koncentraciju TiO2 viskoznost je veća kada je modifikacija izvršena lauril galatom, dok sa povećanjem koncentracije, zbog manje disperzione stabilnosti čestica modifikovanih propil galatom, dolazi do njihove aglomerizacije i naglog povećanja viskoznosti.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "The influence of the size and surface modification of TIO2 nanoparticles on the rheological properties of alkyd resin, Uticaj veličine nanočestica TIO2 i njihove površinske modifikacije na reološka svojstva alkidne smole",
pages = "932-923",
number = "6",
volume = "67",
doi = "10.2298/HEMIND131106081R"
}

Radoman, T. S., Džunuzović, J., Jeremić, K. B., Marinković, A., Spasojević, P., Popović, I.,& Džunuzović, E.. (2013). The influence of the size and surface modification of TIO2 nanoparticles on the rheological properties of alkyd resin. in Hemijska industrija
Association of Chemical Engineers of Serbia., 67(6), 923-932.
https://doi.org/10.2298/HEMIND131106081R

Radoman TS, Džunuzović J, Jeremić KB, Marinković A, Spasojević P, Popović I, Džunuzović E. The influence of the size and surface modification of TIO2 nanoparticles on the rheological properties of alkyd resin. in Hemijska industrija. 2013;67(6):923-932.
doi:10.2298/HEMIND131106081R .

Radoman, Tijana S., Džunuzović, Jasna, Jeremić, Katarina B., Marinković, Aleksandar, Spasojević, Pavle, Popović, Ivanka, Džunuzović, Enis, "The influence of the size and surface modification of TIO2 nanoparticles on the rheological properties of alkyd resin" in Hemijska industrija, 67, no. 6 (2013):923-932,
https://doi.org/10.2298/HEMIND131106081R . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Radoman, Tijana S.
AU  - Marinović-Cincović, Milena
AU  - Nikolić, Ljubiša B.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2508
AB  - Incorporation of surface modified TiO2 nanoparticles into polystyrene (PS) matrix was achieved by in situ bulk radical polymerization of styrene. The surface of TiO2 nanoparticles was modified with four amphiphilic esters of the gallic acid (octyl, decyl, lauryl and cetyl gallate), which have different lengths of hydrophobic alkyl chain (C8C16). FTIR and UV-Vis spectroscopy measurements confirmed the formation of a charge transfer complex between surface Ti atoms and gallic esters. Microstructural characterization of the synthesized nanocomposites revealed that the best dispersion of TiO2 nanoparticles in PS was achieved when the TiO2 surface was modified with octyl gallate. The presence of surface modified TiO2 nanoparticles by different alkyl gallates does not have an influence on the molecular weight and glass transition temperature of PS matrix. On the other hand, thermal and thermo-oxidative stability of PS were significantly improved by incorporation of surface modified TiO2 nanoparticles. The most pronounced improvement of thermal and thermo-oxidative stability was observed for TiO2 nanoparticles surface modified with octyl gallate. POLYM. COMPOS., 2013.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length
EP  - 407
IS  - 3
SP  - 399
VL  - 34
DO  - 10.1002/pc.22423
ER  - 

@article{
author = "Džunuzović, Enis and Džunuzović, Jasna and Radoman, Tijana S. and Marinović-Cincović, Milena and Nikolić, Ljubiša B. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2013",
abstract = "Incorporation of surface modified TiO2 nanoparticles into polystyrene (PS) matrix was achieved by in situ bulk radical polymerization of styrene. The surface of TiO2 nanoparticles was modified with four amphiphilic esters of the gallic acid (octyl, decyl, lauryl and cetyl gallate), which have different lengths of hydrophobic alkyl chain (C8C16). FTIR and UV-Vis spectroscopy measurements confirmed the formation of a charge transfer complex between surface Ti atoms and gallic esters. Microstructural characterization of the synthesized nanocomposites revealed that the best dispersion of TiO2 nanoparticles in PS was achieved when the TiO2 surface was modified with octyl gallate. The presence of surface modified TiO2 nanoparticles by different alkyl gallates does not have an influence on the molecular weight and glass transition temperature of PS matrix. On the other hand, thermal and thermo-oxidative stability of PS were significantly improved by incorporation of surface modified TiO2 nanoparticles. The most pronounced improvement of thermal and thermo-oxidative stability was observed for TiO2 nanoparticles surface modified with octyl gallate. POLYM. COMPOS., 2013.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length",
pages = "407-399",
number = "3",
volume = "34",
doi = "10.1002/pc.22423"
}

Džunuzović, E., Džunuzović, J., Radoman, T. S., Marinović-Cincović, M., Nikolić, L. B., Jeremić, K. B.,& Nedeljković, J.. (2013). Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length. in Polymer Composites
Wiley, Hoboken., 34(3), 399-407.
https://doi.org/10.1002/pc.22423

Džunuzović E, Džunuzović J, Radoman TS, Marinović-Cincović M, Nikolić LB, Jeremić KB, Nedeljković J. Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length. in Polymer Composites. 2013;34(3):399-407.
doi:10.1002/pc.22423 .

Džunuzović, Enis, Džunuzović, Jasna, Radoman, Tijana S., Marinović-Cincović, Milena, Nikolić, Ljubiša B., Jeremić, Katarina B., Nedeljković, Jovan, "Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length" in Polymer Composites, 34, no. 3 (2013):399-407,
https://doi.org/10.1002/pc.22423 . .

TY  - JOUR
AU  - Jovanović, Slobodan
AU  - Džunuzović, Jasna
AU  - Stojanović, Željko
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5710
AB  - A short review of biopolymers based on starch (starch derivatives, thermoplastic starch), lignin and hemicelluloses, chitin (chitosan) and products obtained by degradation of starch and other polysaccharides and sugars (poly(lactic acid), poly(hydroxyalkanoates)), as well as some of their basic properties and application area, are given in this part. The problem of environmental and economic feasibility of biopolymers based on renewable raw materials and their competitiveness with polymers based on fossil raw materials is discussed. Also pointed out are the problems that appear due to the increasing use of agricultural land for the production of raw materials for the chemical industry and energy, instead for the production of food for humans and animals. The optimistic assessments of experts considering the development perspectives of biopolymers based on renewable raw materials in the next ten years have also been pointed out. At the end of the paper, the success of a team of researchers gathered around the experts from the company Bayer is indicated. They were the first in the world to develop a catalyst by which they managed to effectively activate CO- and incorporate it into polyols, used for the synthesis of polyurethanes in semi-industrial scale. By applying this process, for the first time a pollutant will be used as a basic raw material for the synthesis of organic compounds, which will have significant consequences on the development of the chemical industry, and therefore the production of polymers.
AB  - U okviru ovoga dijela rada dan je kratak prikaz biopolimera na bazi škroba (derivati škroba, termoplastièni škrob), lignina i hemiceluloze, hitina (hitozan) i na bazi proizvoda razgradnje škroba, drugih polisaharida i šećera (poli(mliječna kiselina), polihidroksialkanoati), kao i neka njihova osnovna svojstva i područje primjene. Razmatran je problem ekološke i ekonomske prihvatljivosti biopolimera na bazi obnovljivih sirovina i njihove konkurentnosti s polimerima na bazi fosilnih sirovina. Ukazano je i na probleme do kojih već dolazi zbog sve veće upotrebe poljoprivrednog zemljišta za proizvodnju sirovina za kemijsku industriju i energente, umjesto za proizvodnju hrane za ljude i životinje. Ukazano je također na optimistične procjene stručnjaka o perspektivi razvoja proizvodnje biopolimera na bazi obnovljivih sirovina. Na kraju rada je ukazano i na uspjeh tima istraživača okupljenih oko stručnjaka tvrtke Bayer, koji su prvi u svijetu razvili katalizator, pomoću kojeg su uspjeli učinkovito aktivirati CO i ugraditi ga u poliole, koje upotrebljavaju za sintezu poliuretana u poluindrustrijskim razmjerima. Ovim postupkom će prvi put jedan zagađivač biti upotrijebljen kao osnovna sirovina za sintezu organskih spojeva, što će imati nesagledive posljedice na razvoj kemijske industrije, a samim tim i proizvodnje polimera.
PB  - Croatian Society of Chemical Engineers
T2  - Kemija u industriji/Journal of Chemists and Chemical Engineers
T1  - Polymers based on renewable raw materials - Part II
T1  - Polimeri na bazi obnovljivih sirovina – II. dio
EP  - 326
IS  - 9-10
SP  - 315
VL  - 62
UR  - https://hdl.handle.net/21.15107/rcub_cer_1369
ER  - 

@article{
author = "Jovanović, Slobodan and Džunuzović, Jasna and Stojanović, Željko",
year = "2013",
abstract = "A short review of biopolymers based on starch (starch derivatives, thermoplastic starch), lignin and hemicelluloses, chitin (chitosan) and products obtained by degradation of starch and other polysaccharides and sugars (poly(lactic acid), poly(hydroxyalkanoates)), as well as some of their basic properties and application area, are given in this part. The problem of environmental and economic feasibility of biopolymers based on renewable raw materials and their competitiveness with polymers based on fossil raw materials is discussed. Also pointed out are the problems that appear due to the increasing use of agricultural land for the production of raw materials for the chemical industry and energy, instead for the production of food for humans and animals. The optimistic assessments of experts considering the development perspectives of biopolymers based on renewable raw materials in the next ten years have also been pointed out. At the end of the paper, the success of a team of researchers gathered around the experts from the company Bayer is indicated. They were the first in the world to develop a catalyst by which they managed to effectively activate CO- and incorporate it into polyols, used for the synthesis of polyurethanes in semi-industrial scale. By applying this process, for the first time a pollutant will be used as a basic raw material for the synthesis of organic compounds, which will have significant consequences on the development of the chemical industry, and therefore the production of polymers., U okviru ovoga dijela rada dan je kratak prikaz biopolimera na bazi škroba (derivati škroba, termoplastièni škrob), lignina i hemiceluloze, hitina (hitozan) i na bazi proizvoda razgradnje škroba, drugih polisaharida i šećera (poli(mliječna kiselina), polihidroksialkanoati), kao i neka njihova osnovna svojstva i područje primjene. Razmatran je problem ekološke i ekonomske prihvatljivosti biopolimera na bazi obnovljivih sirovina i njihove konkurentnosti s polimerima na bazi fosilnih sirovina. Ukazano je i na probleme do kojih već dolazi zbog sve veće upotrebe poljoprivrednog zemljišta za proizvodnju sirovina za kemijsku industriju i energente, umjesto za proizvodnju hrane za ljude i životinje. Ukazano je također na optimistične procjene stručnjaka o perspektivi razvoja proizvodnje biopolimera na bazi obnovljivih sirovina. Na kraju rada je ukazano i na uspjeh tima istraživača okupljenih oko stručnjaka tvrtke Bayer, koji su prvi u svijetu razvili katalizator, pomoću kojeg su uspjeli učinkovito aktivirati CO i ugraditi ga u poliole, koje upotrebljavaju za sintezu poliuretana u poluindrustrijskim razmjerima. Ovim postupkom će prvi put jedan zagađivač biti upotrijebljen kao osnovna sirovina za sintezu organskih spojeva, što će imati nesagledive posljedice na razvoj kemijske industrije, a samim tim i proizvodnje polimera.",
publisher = "Croatian Society of Chemical Engineers",
journal = "Kemija u industriji/Journal of Chemists and Chemical Engineers",
title = "Polymers based on renewable raw materials - Part II, Polimeri na bazi obnovljivih sirovina – II. dio",
pages = "326-315",
number = "9-10",
volume = "62",
url = "https://hdl.handle.net/21.15107/rcub_cer_1369"
}

Jovanović, S., Džunuzović, J.,& Stojanović, Ž.. (2013). Polymers based on renewable raw materials - Part II. in Kemija u industriji/Journal of Chemists and Chemical Engineers
Croatian Society of Chemical Engineers., 62(9-10), 315-326.
https://hdl.handle.net/21.15107/rcub_cer_1369

Jovanović S, Džunuzović J, Stojanović Ž. Polymers based on renewable raw materials - Part II. in Kemija u industriji/Journal of Chemists and Chemical Engineers. 2013;62(9-10):315-326.
https://hdl.handle.net/21.15107/rcub_cer_1369 .

Jovanović, Slobodan, Džunuzović, Jasna, Stojanović, Željko, "Polymers based on renewable raw materials - Part II" in Kemija u industriji/Journal of Chemists and Chemical Engineers, 62, no. 9-10 (2013):315-326,
https://hdl.handle.net/21.15107/rcub_cer_1369 .

TY  - JOUR
AU  - Jovanović, Slobodan
AU  - Džunuzović, Jasna
AU  - Stojanović, Željko
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5709
AB  - This paper gives an overview of the production and application of polymer materials based on renewable raw materials * biopolymers. It is pointed out that, investment of resources in the study of renewable raw materials in the last twenty years has led to the improvement of old and development of completely new chemical and biochemical processes for using biomass for the production of low molecular weight chemical substances, and especially for the production of biopolymers, which are biodegradable and compostable, and biopolymers which are nonbiodegradable. In the same period, producers of polymers based on fossil raw materials have also developed biopolymers that are biodegradable and some of them compostable and, most important, compatible with biopolymers based on renewable raw materials. The facts considering the state of biopolymers based on renewable raw materials on the market, and prediction of production increase over the next five years are also stated. Additionally, the main renewable raw materials and the biopolymers made from them that are already present in the world market are briefly listed. A short review of biopolymers based on cellulose from wood and annual plants is also given.
AB  - U okviru ovoga rada dan je pregled stanja u proizvodnji i primjeni polimernih materijala na bazi obnovljivih sirovina – biopolimera. Ukazano je na to da su ulaganjem sredstava u izučavanje obnovljivih sirovina u posljednjih dvadesetak godina unaprijeđeni stari i razvijeni potpuno novi kemijski i biokemijski postupci uporabe biomase za dobivanje niskomolekulskih kemijskih supstancija, a posebno biopolimera koji su i biorazgradivi i kompostabilni, ali i biopolimera koji su bionerazgradivi. U istom razdoblju su i proizvođači polimera na bazi fosilnih sirovina razvili biopolimere koji su biorazgradivi, a neki i kompostabilni i što je vrlo bitno kompatibilni s biopolimerima na bazi obnovljivih sirovina. Navedeni su i podaci o stanju na tržištu biopolimera na bazi obnovljivih sirovina, kao i procjene povećanja proizvodnje u sljedećih desetak godina. Pored toga ukratko su prikazane osnovne obnovljive sirovine, kao i biopolimeri koji se od njih proizvode i veze su prisutni na svjetskom tržištu. Dan je kratak prikaz biopolimera na bazi celuloze iz drveta i jednogodišnjih biljaka.
PB  - Croatian Society of Chemical Engineers
T2  - Kemija u industriji/Journal of Chemists and Chemical Engineers
T1  - Polymers based on renewable raw materials - Part I
T1  - Polimeri na bazi obnovljivih sirovina – I. dio
EP  - 314
IS  - 9-10
SP  - 307
VL  - 62
UR  - https://hdl.handle.net/21.15107/rcub_cer_1380
ER  - 

@article{
author = "Jovanović, Slobodan and Džunuzović, Jasna and Stojanović, Željko",
year = "2013",
abstract = "This paper gives an overview of the production and application of polymer materials based on renewable raw materials * biopolymers. It is pointed out that, investment of resources in the study of renewable raw materials in the last twenty years has led to the improvement of old and development of completely new chemical and biochemical processes for using biomass for the production of low molecular weight chemical substances, and especially for the production of biopolymers, which are biodegradable and compostable, and biopolymers which are nonbiodegradable. In the same period, producers of polymers based on fossil raw materials have also developed biopolymers that are biodegradable and some of them compostable and, most important, compatible with biopolymers based on renewable raw materials. The facts considering the state of biopolymers based on renewable raw materials on the market, and prediction of production increase over the next five years are also stated. Additionally, the main renewable raw materials and the biopolymers made from them that are already present in the world market are briefly listed. A short review of biopolymers based on cellulose from wood and annual plants is also given., U okviru ovoga rada dan je pregled stanja u proizvodnji i primjeni polimernih materijala na bazi obnovljivih sirovina – biopolimera. Ukazano je na to da su ulaganjem sredstava u izučavanje obnovljivih sirovina u posljednjih dvadesetak godina unaprijeđeni stari i razvijeni potpuno novi kemijski i biokemijski postupci uporabe biomase za dobivanje niskomolekulskih kemijskih supstancija, a posebno biopolimera koji su i biorazgradivi i kompostabilni, ali i biopolimera koji su bionerazgradivi. U istom razdoblju su i proizvođači polimera na bazi fosilnih sirovina razvili biopolimere koji su biorazgradivi, a neki i kompostabilni i što je vrlo bitno kompatibilni s biopolimerima na bazi obnovljivih sirovina. Navedeni su i podaci o stanju na tržištu biopolimera na bazi obnovljivih sirovina, kao i procjene povećanja proizvodnje u sljedećih desetak godina. Pored toga ukratko su prikazane osnovne obnovljive sirovine, kao i biopolimeri koji se od njih proizvode i veze su prisutni na svjetskom tržištu. Dan je kratak prikaz biopolimera na bazi celuloze iz drveta i jednogodišnjih biljaka.",
publisher = "Croatian Society of Chemical Engineers",
journal = "Kemija u industriji/Journal of Chemists and Chemical Engineers",
title = "Polymers based on renewable raw materials - Part I, Polimeri na bazi obnovljivih sirovina – I. dio",
pages = "314-307",
number = "9-10",
volume = "62",
url = "https://hdl.handle.net/21.15107/rcub_cer_1380"
}

Jovanović, S., Džunuzović, J.,& Stojanović, Ž.. (2013). Polymers based on renewable raw materials - Part I. in Kemija u industriji/Journal of Chemists and Chemical Engineers
Croatian Society of Chemical Engineers., 62(9-10), 307-314.
https://hdl.handle.net/21.15107/rcub_cer_1380

Jovanović S, Džunuzović J, Stojanović Ž. Polymers based on renewable raw materials - Part I. in Kemija u industriji/Journal of Chemists and Chemical Engineers. 2013;62(9-10):307-314.
https://hdl.handle.net/21.15107/rcub_cer_1380 .

Jovanović, Slobodan, Džunuzović, Jasna, Stojanović, Željko, "Polymers based on renewable raw materials - Part I" in Kemija u industriji/Journal of Chemists and Chemical Engineers, 62, no. 9-10 (2013):307-314,
https://hdl.handle.net/21.15107/rcub_cer_1380 .

TY  - CHAP
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2269
AB  - Hyperbranched polymers represent intriguing class of dendritic polymers, which show remarkable, unique and different chemical and physical properties compared to their linear counterparts, as a result of their complex, three-dimensional structure, presence of a large number of end functional groups and low degree of entanglement. Partial or complete chemical modification of end functional groups can be utilized to improve compatibility with other compounds and to enhance or tailor performances of hyperbranched polymers in order to adjust them for some specific application requirements. The knowledge and understanding of rheological properties of hyperbranched polymers is of great practical importance and therefore this chapter reviews rheological behavior of different hyperbranched polymers using recent investigations presented in the open literature. This review is focused on a discussion of a key factors that show an influence on the rheological properties of hyperbranched polymers, such as nature of the polymer backbone, molecular weight and molecular weight distribution, type and number of end functional groups, etc.
T2  - Rheology: Theory, Properties and Practical Applications
T1  - Rheological behavior of hyperbranched polymers
EP  - 382
SP  - 359
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2269
ER  - 

@inbook{
author = "Džunuzović, Jasna and Džunuzović, Enis",
year = "2013",
abstract = "Hyperbranched polymers represent intriguing class of dendritic polymers, which show remarkable, unique and different chemical and physical properties compared to their linear counterparts, as a result of their complex, three-dimensional structure, presence of a large number of end functional groups and low degree of entanglement. Partial or complete chemical modification of end functional groups can be utilized to improve compatibility with other compounds and to enhance or tailor performances of hyperbranched polymers in order to adjust them for some specific application requirements. The knowledge and understanding of rheological properties of hyperbranched polymers is of great practical importance and therefore this chapter reviews rheological behavior of different hyperbranched polymers using recent investigations presented in the open literature. This review is focused on a discussion of a key factors that show an influence on the rheological properties of hyperbranched polymers, such as nature of the polymer backbone, molecular weight and molecular weight distribution, type and number of end functional groups, etc.",
journal = "Rheology: Theory, Properties and Practical Applications",
booktitle = "Rheological behavior of hyperbranched polymers",
pages = "382-359",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2269"
}

Džunuzović, J.,& Džunuzović, E.. (2013). Rheological behavior of hyperbranched polymers. in Rheology: Theory, Properties and Practical Applications, 359-382.
https://hdl.handle.net/21.15107/rcub_technorep_2269

Džunuzović J, Džunuzović E. Rheological behavior of hyperbranched polymers. in Rheology: Theory, Properties and Practical Applications. 2013;:359-382.
https://hdl.handle.net/21.15107/rcub_technorep_2269 .

Džunuzović, Jasna, Džunuzović, Enis, "Rheological behavior of hyperbranched polymers" in Rheology: Theory, Properties and Practical Applications (2013):359-382,
https://hdl.handle.net/21.15107/rcub_technorep_2269 .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Marinković, Aleksandar
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2155
AB  - Nanocomposites based on poly(methyl methacrylate) (PMMA) and TiO2 nanoparticles were synthesized by in situ radical polymerization of MMA in solution. The surface of TiO2 nanoparticles was modified with four gallic acid esters (octyl, decyl, lauryl and cetyl gallate). The content of gallates present on the surface of TiO2, was calculated from the TGA results. The influence of length of hydrophobic tail of amphiphilic alkyl gallates on dispersability of surface modified TiO2 nanoparticles in PMMA matrix, the molecular weight and glass transition temperature of PMMA, as well as the thermal stability of the prepared PMMA/TiO2 nanocomposites in nitrogen and air was investigated. The influence of content of TiO2 nanoparticles on the properties of these nanocomposites was also examined. The formation of a charge transfer complex between the surface Ti atoms and the gallates was confirmed by FTIR and LIN/spectroscopy. TEM micrographs of the PMMA/TiO2 nanocomposites revealed that degree of TiO2 aggregation can be significantly lowered by increasing the length of aliphatic part of the used gallates. The molecular weight of PMMA slightly decreases with the increase of TiO2 content, indicating that used TiO2 nanoparticles act as radical scavengers during the polymerization of MMA. The presence of surface modified TiO2 nanoparticles do not have an influence on the mobility of PMMA chain segments leading to the same values of glass transition temperature for all investigated samples. Thermal and thermo-oxidative stability of the PMMA matrix are improved by introducing TiO2 nanoparticles modified with gallates.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - European Polymer Journal
T1  - Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites
EP  - 1393
IS  - 8
SP  - 1385
VL  - 48
DO  - 10.1016/j.eurpolymj.2012.05.017
ER  - 

@article{
author = "Džunuzović, Enis and Džunuzović, Jasna and Marinković, Aleksandar and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites based on poly(methyl methacrylate) (PMMA) and TiO2 nanoparticles were synthesized by in situ radical polymerization of MMA in solution. The surface of TiO2 nanoparticles was modified with four gallic acid esters (octyl, decyl, lauryl and cetyl gallate). The content of gallates present on the surface of TiO2, was calculated from the TGA results. The influence of length of hydrophobic tail of amphiphilic alkyl gallates on dispersability of surface modified TiO2 nanoparticles in PMMA matrix, the molecular weight and glass transition temperature of PMMA, as well as the thermal stability of the prepared PMMA/TiO2 nanocomposites in nitrogen and air was investigated. The influence of content of TiO2 nanoparticles on the properties of these nanocomposites was also examined. The formation of a charge transfer complex between the surface Ti atoms and the gallates was confirmed by FTIR and LIN/spectroscopy. TEM micrographs of the PMMA/TiO2 nanocomposites revealed that degree of TiO2 aggregation can be significantly lowered by increasing the length of aliphatic part of the used gallates. The molecular weight of PMMA slightly decreases with the increase of TiO2 content, indicating that used TiO2 nanoparticles act as radical scavengers during the polymerization of MMA. The presence of surface modified TiO2 nanoparticles do not have an influence on the mobility of PMMA chain segments leading to the same values of glass transition temperature for all investigated samples. Thermal and thermo-oxidative stability of the PMMA matrix are improved by introducing TiO2 nanoparticles modified with gallates.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "European Polymer Journal",
title = "Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites",
pages = "1393-1385",
number = "8",
volume = "48",
doi = "10.1016/j.eurpolymj.2012.05.017"
}

Džunuzović, E., Džunuzović, J., Marinković, A., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2012). Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites. in European Polymer Journal
Pergamon-Elsevier Science Ltd, Oxford., 48(8), 1385-1393.
https://doi.org/10.1016/j.eurpolymj.2012.05.017

Džunuzović E, Džunuzović J, Marinković A, Marinović-Cincović M, Jeremić KB, Nedeljković J. Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites. in European Polymer Journal. 2012;48(8):1385-1393.
doi:10.1016/j.eurpolymj.2012.05.017 .

Džunuzović, Enis, Džunuzović, Jasna, Marinković, Aleksandar, Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites" in European Polymer Journal, 48, no. 8 (2012):1385-1393,
https://doi.org/10.1016/j.eurpolymj.2012.05.017 . .

TY  - JOUR
AU  - Pergal, Marija
AU  - Džunuzović, Jasna
AU  - Ostojić, Sanja
AU  - Pergal, Miodrag M.
AU  - Radulović, Aleksandra
AU  - Jovanovic, Slobodan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5732
AB  - A series of novel polyurethane crosslinked structures (PUs) was prepared from α,ω-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4'-methylenediphenyl diisocyanate and Boltorn ® hyperbranched polyester of the third pseudo generation. The hydroxyfunctional hyperbranched aliphatic polyester with 26 end groups was used as a crosslinking agent. In order to improve the compatibility of all the reactants during the synthesis, the PU samples were prepared by two-stage, step-growth polymerization in solution. The content of the soft EO-PDMS-EO segments was varied in the range from 15 to 40 wt. %. The influence of the EO-PDMS-EO content on the swelling behavior, crosslink density, hardness, and the thermal and surface properties of the synthesized PUs was investigated. The structure of the synthesized polyurethanes was confirmed by the presence of specific bands in the Fourier transform infrared spectra. Swelling studies were performed to determine the crosslink density and polyurethane networks with lower EO-PDMS-EO contents had higher crosslink densities. The glass transition temperature of the synthesized PUs, determined by differential scanning calorimetry, slightly increased from 50 to 58°C on decreasing the EO-PDMS-EO content because of the higher crosslink density of the samples. Increasing the EO-PDMS-EO content led to better thermal stability, as was evidenced by the onset temperature of weight loss. The surface of the polyurethane networks became more hydrophobic with increasing EO-PDMS-EO content. The surface morphology of synthesized polyurethanes was analyzed by scanning electron microscopy.
AB  - U ovom radu prikazana je sinteza, struktura i neka svojstva novih umreženih poliuretana pripremljenih polazeći od α,ω-dihidroksi-(etilenoksid-poli(dimetilsiloksan)-etilenoksid) pretpolimera (EO-PDMS-EO), 4,4'-metilendifenildiizocijanata i Boltorn® hiperrazgranatog poliestra treće pseudo-generacije. Hiperrazgranati hidroksi funkcionalni alifatski poliestar sa 26 krajnjih grupa služio je kao umrežavajući agens pri sintezi poliuretana. U cilju poboljšanja kompatibilnosti reaktanata tokom sinteze, poliuretani su sintetisani dvostepenom polimerizacijom u rastvoru. Sadržaj mekog EO-PDMS-EO segmenta variran je u opsegu od 15 do 40 mas. %. Ispitan je uticaj EO-PDMS-EO sadržaja na ponašanje pri bubrenju, gustinu umrežavanja, tvrdoću, termička i površinska svojstva sintetisanih poliuretana. Struktura sintetisanih poliuretana potvrđena je FTIR spektroskopijom. Ponašanje pri bubrenju je ispitivano kako bi se odredila gustina umrežavanja i pokazano je da poliuretanske mreže sa nižim EO-PDMS-EO sadržajem imaju veću gustinu umrežavanja. Rezultati diferencijalne skenirajuće kalorimetrije pokazali su povećanje temperature ostakljivanja poliuretana od 50 do 58°C sa smanjenjem EO-PDMS-EO sadržaja kao posledicu veće gustine umreženosti uzoraka. Sintetisani poliuretani sa većim sadržajem EO-PDMS-EO segmenata pokazuju bolju termičku stabilnost, što je potvrđeno porastom početne temperature degradacije, određene TG analizom. Hidrofobnost površine poliuretana je rasla sa povećanjem sadržaja EO-PDMS-EO u odgovarajućem uzorku. Površinska morfologija sintetisanih poliuretana je analizirana skenirajućom elektronskom mikroskopijom.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization
T1  - Poli(uretan-siloksani) na bazi hiperrazgranatog poliestra kao umreživača - sinteza i karakterizacija
EP  - 935
IS  - 7
SP  - 919
VL  - 77
DO  - 10.2298/JSC111013006P
ER  - 

@article{
author = "Pergal, Marija and Džunuzović, Jasna and Ostojić, Sanja and Pergal, Miodrag M. and Radulović, Aleksandra and Jovanovic, Slobodan",
year = "2012",
abstract = "A series of novel polyurethane crosslinked structures (PUs) was prepared from α,ω-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4'-methylenediphenyl diisocyanate and Boltorn ® hyperbranched polyester of the third pseudo generation. The hydroxyfunctional hyperbranched aliphatic polyester with 26 end groups was used as a crosslinking agent. In order to improve the compatibility of all the reactants during the synthesis, the PU samples were prepared by two-stage, step-growth polymerization in solution. The content of the soft EO-PDMS-EO segments was varied in the range from 15 to 40 wt. %. The influence of the EO-PDMS-EO content on the swelling behavior, crosslink density, hardness, and the thermal and surface properties of the synthesized PUs was investigated. The structure of the synthesized polyurethanes was confirmed by the presence of specific bands in the Fourier transform infrared spectra. Swelling studies were performed to determine the crosslink density and polyurethane networks with lower EO-PDMS-EO contents had higher crosslink densities. The glass transition temperature of the synthesized PUs, determined by differential scanning calorimetry, slightly increased from 50 to 58°C on decreasing the EO-PDMS-EO content because of the higher crosslink density of the samples. Increasing the EO-PDMS-EO content led to better thermal stability, as was evidenced by the onset temperature of weight loss. The surface of the polyurethane networks became more hydrophobic with increasing EO-PDMS-EO content. The surface morphology of synthesized polyurethanes was analyzed by scanning electron microscopy., U ovom radu prikazana je sinteza, struktura i neka svojstva novih umreženih poliuretana pripremljenih polazeći od α,ω-dihidroksi-(etilenoksid-poli(dimetilsiloksan)-etilenoksid) pretpolimera (EO-PDMS-EO), 4,4'-metilendifenildiizocijanata i Boltorn® hiperrazgranatog poliestra treće pseudo-generacije. Hiperrazgranati hidroksi funkcionalni alifatski poliestar sa 26 krajnjih grupa služio je kao umrežavajući agens pri sintezi poliuretana. U cilju poboljšanja kompatibilnosti reaktanata tokom sinteze, poliuretani su sintetisani dvostepenom polimerizacijom u rastvoru. Sadržaj mekog EO-PDMS-EO segmenta variran je u opsegu od 15 do 40 mas. %. Ispitan je uticaj EO-PDMS-EO sadržaja na ponašanje pri bubrenju, gustinu umrežavanja, tvrdoću, termička i površinska svojstva sintetisanih poliuretana. Struktura sintetisanih poliuretana potvrđena je FTIR spektroskopijom. Ponašanje pri bubrenju je ispitivano kako bi se odredila gustina umrežavanja i pokazano je da poliuretanske mreže sa nižim EO-PDMS-EO sadržajem imaju veću gustinu umrežavanja. Rezultati diferencijalne skenirajuće kalorimetrije pokazali su povećanje temperature ostakljivanja poliuretana od 50 do 58°C sa smanjenjem EO-PDMS-EO sadržaja kao posledicu veće gustine umreženosti uzoraka. Sintetisani poliuretani sa većim sadržajem EO-PDMS-EO segmenata pokazuju bolju termičku stabilnost, što je potvrđeno porastom početne temperature degradacije, određene TG analizom. Hidrofobnost površine poliuretana je rasla sa povećanjem sadržaja EO-PDMS-EO u odgovarajućem uzorku. Površinska morfologija sintetisanih poliuretana je analizirana skenirajućom elektronskom mikroskopijom.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization, Poli(uretan-siloksani) na bazi hiperrazgranatog poliestra kao umreživača - sinteza i karakterizacija",
pages = "935-919",
number = "7",
volume = "77",
doi = "10.2298/JSC111013006P"
}

Pergal, M., Džunuzović, J., Ostojić, S., Pergal, M. M., Radulović, A.,& Jovanovic, S.. (2012). Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 77(7), 919-935.
https://doi.org/10.2298/JSC111013006P

Pergal M, Džunuzović J, Ostojić S, Pergal MM, Radulović A, Jovanovic S. Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization. in Journal of the Serbian Chemical Society. 2012;77(7):919-935.
doi:10.2298/JSC111013006P .

Pergal, Marija, Džunuzović, Jasna, Ostojić, Sanja, Pergal, Miodrag M., Radulović, Aleksandra, Jovanovic, Slobodan, "Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization" in Journal of the Serbian Chemical Society, 77, no. 7 (2012):919-935,
https://doi.org/10.2298/JSC111013006P . .