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  - Knežević-Jugović, Zorica
AU  - Žuža, Milena
AU  - Jakovetić, Sonja
AU  - Stefanović, Andrea
AU  - Džunuzović, Enis
AU  - Jeremić, Katarina B.
AU  - Jovanović, Slobodan M.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3457
AB  - The use of penicillin G acylase (PGA) covalently linked to insoluble carrier is expected to produce major advances in pharmaceutical processing industry and the enzyme stability enhancement is still a significant challenge. The objective of this study was to improve catalytic performance of the covalently immobilized PGA on a potential industrial carrier, macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [poly(GMA-co-EGDMA)], by optimizing the copolymerization process and the enzyme attachment procedure. This synthetic copolymer could be a very promising alternative for the development of low-cost, easy-to-prepare, and stable biocatalyst compared to expensive commercially available epoxy carriers such as Eupergit or Sepabeads. The PGA immobilized on poly(GMA-co-EGDMA) in the shape of microbeads obtained by suspension copolymerization appeared to have higher activity yield compared to copolymerization in a cast. Optimal conditions for the immobilization of PGA on poly(GMA-co-EGDMA) microbeads were 1mg/mL of PGA in 0.75mol/L phosphate buffer pH 6.0 at 25 degrees C for 24h, leading to the active biocatalyst with the specific activity of 252.7U/g dry beads. Chemical amination of the immobilized PGA could contribute to the enhanced stability of the biocatalyst by inducing secondary interactions between the enzyme and the carrier, ensuring multipoint attachment. The best balance between the activity yield (51.5%), enzyme loading (25.6mg/g), and stability (stabilization factor 22.2) was achieved for the partially modified PGA.
PB  - Wiley, Hoboken
T2  - Biotechnology Progress
T1  - An approach for the improved immobilization of penicillin G acylase onto macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) as a potential industrial biocatalyst
EP  - 53
IS  - 1
SP  - 43
VL  - 32
DO  - 10.1002/btpr.2181
ER  - 

@article{
author = "Knežević-Jugović, Zorica and Žuža, Milena and Jakovetić, Sonja and Stefanović, Andrea and Džunuzović, Enis and Jeremić, Katarina B. and Jovanović, Slobodan M.",
year = "2016",
abstract = "The use of penicillin G acylase (PGA) covalently linked to insoluble carrier is expected to produce major advances in pharmaceutical processing industry and the enzyme stability enhancement is still a significant challenge. The objective of this study was to improve catalytic performance of the covalently immobilized PGA on a potential industrial carrier, macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [poly(GMA-co-EGDMA)], by optimizing the copolymerization process and the enzyme attachment procedure. This synthetic copolymer could be a very promising alternative for the development of low-cost, easy-to-prepare, and stable biocatalyst compared to expensive commercially available epoxy carriers such as Eupergit or Sepabeads. The PGA immobilized on poly(GMA-co-EGDMA) in the shape of microbeads obtained by suspension copolymerization appeared to have higher activity yield compared to copolymerization in a cast. Optimal conditions for the immobilization of PGA on poly(GMA-co-EGDMA) microbeads were 1mg/mL of PGA in 0.75mol/L phosphate buffer pH 6.0 at 25 degrees C for 24h, leading to the active biocatalyst with the specific activity of 252.7U/g dry beads. Chemical amination of the immobilized PGA could contribute to the enhanced stability of the biocatalyst by inducing secondary interactions between the enzyme and the carrier, ensuring multipoint attachment. The best balance between the activity yield (51.5%), enzyme loading (25.6mg/g), and stability (stabilization factor 22.2) was achieved for the partially modified PGA.",
publisher = "Wiley, Hoboken",
journal = "Biotechnology Progress",
title = "An approach for the improved immobilization of penicillin G acylase onto macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) as a potential industrial biocatalyst",
pages = "53-43",
number = "1",
volume = "32",
doi = "10.1002/btpr.2181"
}

Knežević-Jugović, Z., Žuža, M., Jakovetić, S., Stefanović, A., Džunuzović, E., Jeremić, K. B.,& Jovanović, S. M.. (2016). An approach for the improved immobilization of penicillin G acylase onto macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) as a potential industrial biocatalyst. in Biotechnology Progress
Wiley, Hoboken., 32(1), 43-53.
https://doi.org/10.1002/btpr.2181

Knežević-Jugović Z, Žuža M, Jakovetić S, Stefanović A, Džunuzović E, Jeremić KB, Jovanović SM. An approach for the improved immobilization of penicillin G acylase onto macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) as a potential industrial biocatalyst. in Biotechnology Progress. 2016;32(1):43-53.
doi:10.1002/btpr.2181 .

Knežević-Jugović, Zorica, Žuža, Milena, Jakovetić, Sonja, Stefanović, Andrea, Džunuzović, Enis, Jeremić, Katarina B., Jovanović, Slobodan M., "An approach for the improved immobilization of penicillin G acylase onto macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) as a potential industrial biocatalyst" in Biotechnology Progress, 32, no. 1 (2016):43-53,
https://doi.org/10.1002/btpr.2181 . .

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  - 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  - 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  - Stojanović, Željko
AU  - Jeremić, Katarina
AU  - Jovanović, Slobodan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5731
AB  - The dilute solution behavior of six carboxymethyl starch (CMS) samples was investigated in aqueous NaCl solutions of different concentration (0.01, 0.05, 0.1, and 0.5 M) by dynamic light scattering (DLS) at 25°C. The values of weight average molar mass, Mw, of the investigated CMS samples were in the range from 9 × 105 to 2.1 × 107 g/mol. Three of the CMS samples were obtained from corn starch and the other three from potato starch. They had different degrees of substitution, DS, ranging from 0.4 to 1.1. The translational diffusion coefficient, Dz, and hydrodynamic radius, Rh, were determined for all CMS samples in aqueous NaCl solutions of different concentrations by the DLS method. The obtained results were treated together with previous results obtained by static light scattering and viscometry, which enabled the calculation of the structure-sensitive parameter, ρ, and the dependence of Rh, radius of gyration, Rg, and viscosity radius, Rη, on molar mass. The calculated values of the ρ parameter were independent of molar mass. The parameter ρ did not change significantly with the variation of the salt concentration in water, its values being in the range from 1.10 to 1.19. The values of exponent ni in the log-log dependence of Rg, Rh, and Rη on Mw were in the range between 0.42 and 0.47; 0.36 and 0.49; 0.42 and 0.44, respectively. These values are characteristic of branched structures of macromolecules.
PB  - Wiley-VCH Verlag
T2  - Starch/Staerke
T1  - Molecular structure of carboxymethyl starch in dilute aqueous sodium chloride solutions
EP  - 911
IS  - 11-12
SP  - 902
VL  - 65
DO  - 10.1002/star.201200225
ER  - 

@article{
author = "Stojanović, Željko and Jeremić, Katarina and Jovanović, Slobodan",
year = "2013",
abstract = "The dilute solution behavior of six carboxymethyl starch (CMS) samples was investigated in aqueous NaCl solutions of different concentration (0.01, 0.05, 0.1, and 0.5 M) by dynamic light scattering (DLS) at 25°C. The values of weight average molar mass, Mw, of the investigated CMS samples were in the range from 9 × 105 to 2.1 × 107 g/mol. Three of the CMS samples were obtained from corn starch and the other three from potato starch. They had different degrees of substitution, DS, ranging from 0.4 to 1.1. The translational diffusion coefficient, Dz, and hydrodynamic radius, Rh, were determined for all CMS samples in aqueous NaCl solutions of different concentrations by the DLS method. The obtained results were treated together with previous results obtained by static light scattering and viscometry, which enabled the calculation of the structure-sensitive parameter, ρ, and the dependence of Rh, radius of gyration, Rg, and viscosity radius, Rη, on molar mass. The calculated values of the ρ parameter were independent of molar mass. The parameter ρ did not change significantly with the variation of the salt concentration in water, its values being in the range from 1.10 to 1.19. The values of exponent ni in the log-log dependence of Rg, Rh, and Rη on Mw were in the range between 0.42 and 0.47; 0.36 and 0.49; 0.42 and 0.44, respectively. These values are characteristic of branched structures of macromolecules.",
publisher = "Wiley-VCH Verlag",
journal = "Starch/Staerke",
title = "Molecular structure of carboxymethyl starch in dilute aqueous sodium chloride solutions",
pages = "911-902",
number = "11-12",
volume = "65",
doi = "10.1002/star.201200225"
}

Stojanović, Ž., Jeremić, K.,& Jovanović, S.. (2013). Molecular structure of carboxymethyl starch in dilute aqueous sodium chloride solutions. in Starch/Staerke
Wiley-VCH Verlag., 65(11-12), 902-911.
https://doi.org/10.1002/star.201200225

Stojanović Ž, Jeremić K, Jovanović S. Molecular structure of carboxymethyl starch in dilute aqueous sodium chloride solutions. in Starch/Staerke. 2013;65(11-12):902-911.
doi:10.1002/star.201200225 .

Stojanović, Željko, Jeremić, Katarina, Jovanović, Slobodan, "Molecular structure of carboxymethyl starch in dilute aqueous sodium chloride solutions" in Starch/Staerke, 65, no. 11-12 (2013):902-911,
https://doi.org/10.1002/star.201200225 . .

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  - Džunuzović, Enis
AU  - Tasić, Srba V.
AU  - Božić, Branislav R.
AU  - Džunuzović, Jasna
AU  - Dunjić, Branko
AU  - Jeremić, Katarina B.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2211
AB  - The properties of urethane acrylate resin mixtures based on the linear and hyperbranched aliphatic polyesters were examined. Linear polyester was synthesized from neopentil glycol and adipic acid. Hyperbranched polyester of the third generation was synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of 60% of hyperbranched aliphatic polyester OH end groups was carried out with isononanoic acid or with soybean fatty acids. Two hyperbranched urethane acrylates, with the same degree of acrylation, and one linear urethane acrylate were obtained by reaction of appropriate polyester and isophorone diisocyanate and 2-hydroxyethyl acrylate. The influence of added amount of HUA and nature of non-acrylic end groups on the rheological, mechanical and thermal properties of the uncured and UV cured mixtures diluted with 20 wt.% hexanediol diacrylate was examined. The nature of non-acrylic end groups have great effect on the interaction between linear and hyperbranched urethane acrylates, which further has a crucial influence on the examined properties of uncured and UV cured mixture samples.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates
EP  - 164
IS  - 1
SP  - 158
VL  - 74
DO  - 10.1016/j.porgcoat.2011.12.004
ER  - 

@article{
author = "Džunuzović, Enis and Tasić, Srba V. and Božić, Branislav R. and Džunuzović, Jasna and Dunjić, Branko and Jeremić, Katarina B.",
year = "2012",
abstract = "The properties of urethane acrylate resin mixtures based on the linear and hyperbranched aliphatic polyesters were examined. Linear polyester was synthesized from neopentil glycol and adipic acid. Hyperbranched polyester of the third generation was synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of 60% of hyperbranched aliphatic polyester OH end groups was carried out with isononanoic acid or with soybean fatty acids. Two hyperbranched urethane acrylates, with the same degree of acrylation, and one linear urethane acrylate were obtained by reaction of appropriate polyester and isophorone diisocyanate and 2-hydroxyethyl acrylate. The influence of added amount of HUA and nature of non-acrylic end groups on the rheological, mechanical and thermal properties of the uncured and UV cured mixtures diluted with 20 wt.% hexanediol diacrylate was examined. The nature of non-acrylic end groups have great effect on the interaction between linear and hyperbranched urethane acrylates, which further has a crucial influence on the examined properties of uncured and UV cured mixture samples.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates",
pages = "164-158",
number = "1",
volume = "74",
doi = "10.1016/j.porgcoat.2011.12.004"
}

Džunuzović, E., Tasić, S. V., Božić, B. R., Džunuzović, J., Dunjić, B.,& Jeremić, K. B.. (2012). Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 74(1), 158-164.
https://doi.org/10.1016/j.porgcoat.2011.12.004

Džunuzović E, Tasić SV, Božić BR, Džunuzović J, Dunjić B, Jeremić KB. Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates. in Progress in Organic Coatings. 2012;74(1):158-164.
doi:10.1016/j.porgcoat.2011.12.004 .

Džunuzović, Enis, Tasić, Srba V., Božić, Branislav R., Džunuzović, Jasna, Dunjić, Branko, Jeremić, Katarina B., "Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates" in Progress in Organic Coatings, 74, no. 1 (2012):158-164,
https://doi.org/10.1016/j.porgcoat.2011.12.004 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Džunuzović, Jasna
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1668
AB  - Incorporation of inorganic nanoparticles can significantly affect the properties of the polymer matrix. The properties of polymer nanocomposites depend on the type of incorporated nanoparticles, their size and shape, their concentration, and interactions with the polymer matrix. Homogeneity of polymer nanocomposites is influenced very much by the preparation method. In this study, TiO2 nanoparticles surface modified with 6-palmitate ascorbic acid (6-PAA) were encapsulated in poly(methyl methacrylate) (PMMA) by in situ radical polymerization of methyl methacrylate initiated by 2,2'-azobisisobutyronitrile (AIBN). The surface modification of the TiO2 nanoparticles was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The radical polymerization of MMA in the presence of TiO2-PAA nanoparticles was conducted in solution (PMMA/TiO2-PAA-R), in bulk (PMMA/TiO2-PAA-M) or in suspension (PMMA/TiO2-PAA-S). The main purpose of this study was to investigate the influence of the preparation method on the molar masses and thermal properties of PMMA/TiO2-PAA nanocomposite. It was obtained that molar masses of PMMA extracted from the composites had smaller values compared to molar masses of pure PMMA synthesized in the same manner, which indicated that TiO2-PAA nanoparticles affected the reaction of termination. Thermal properties were investigated by DSC and TGA. The values of glass transition temperature, Tg, were influenced by the way the radical polymerization was conducted, even in the case of the pure PMMA. The Tg of composite samples was always smaller than the value of the corresponding PMMA sample and the smallest value was obtained for PMMA/TiO2-PAA-M since they contained the largest amount of low molar mass residue. The TGA results showed that thermal and thermooxidative stability of polymer composites obtained in solution and in suspension was better than for the pure PMMA obtained in the same way.
AB  - Predmet ovog rada je dobijanje i karakterizacija nanokompozita kod kojih polimernu matricu čini poli(metil metakrilat) (PMMA), a kao neorgansko punilo nanočestice titan-dioksida. Svi uzorci nanokompozita dobijeni su in situ polimerizacijom preko slobodnih radikala metil metakrilata (MMA) u prisustvu čestica punila. Površinska modifikacija korišćenih nanočestica titan-dioksida izvršena je palmitatom askorbinske kiseline. Uzorci nanokompozita su pripremljeni polimerizacijom metil metakrilata u rastvoru, u masi i suspenzionom polimerizacijom. Određene su vrednosti molarne mase PMMA ekstrahovanog iz kompozitnih uzoraka i dobijeno je da su one manje od vrednosti molarne mase čistog PMMA dobijenog na isti način, na osnovu čega se može zaključiti da nanočestice TiO2-PAA prisutne u toku polimerizacije u sva tri slučaja utiču na reakcije terminacije i dovode do smanjenja molarne mase PMMA matrice. Diferencijalnom skenirajućom kalorimetrijom i termogravimetrijskom analizom utvrđeno je i da način sinteze polimerne matrice i koncentracija čestica punila utiču na termička svojstva dobijenih polimernih nanokompozita.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Influence of the way of synthesis of poly(methyl methacrylate) in the presence of surface modified TiO2 nanoparticles on the properties of obtained nanocomposites
T1  - Uticaj načina sinteze poli(metil metakrilata) u prisustvu površinski modifikovanih TiO2 nanočestica na svojstva dobijenih nanokompozita
EP  - 489
IS  - 6
SP  - 473
VL  - 64
DO  - 10.2298/HEMIND100923059D
ER  - 

@article{
author = "Džunuzović, Enis and Marinović-Cincović, Milena and Džunuzović, Jasna and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2010",
abstract = "Incorporation of inorganic nanoparticles can significantly affect the properties of the polymer matrix. The properties of polymer nanocomposites depend on the type of incorporated nanoparticles, their size and shape, their concentration, and interactions with the polymer matrix. Homogeneity of polymer nanocomposites is influenced very much by the preparation method. In this study, TiO2 nanoparticles surface modified with 6-palmitate ascorbic acid (6-PAA) were encapsulated in poly(methyl methacrylate) (PMMA) by in situ radical polymerization of methyl methacrylate initiated by 2,2'-azobisisobutyronitrile (AIBN). The surface modification of the TiO2 nanoparticles was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The radical polymerization of MMA in the presence of TiO2-PAA nanoparticles was conducted in solution (PMMA/TiO2-PAA-R), in bulk (PMMA/TiO2-PAA-M) or in suspension (PMMA/TiO2-PAA-S). The main purpose of this study was to investigate the influence of the preparation method on the molar masses and thermal properties of PMMA/TiO2-PAA nanocomposite. It was obtained that molar masses of PMMA extracted from the composites had smaller values compared to molar masses of pure PMMA synthesized in the same manner, which indicated that TiO2-PAA nanoparticles affected the reaction of termination. Thermal properties were investigated by DSC and TGA. The values of glass transition temperature, Tg, were influenced by the way the radical polymerization was conducted, even in the case of the pure PMMA. The Tg of composite samples was always smaller than the value of the corresponding PMMA sample and the smallest value was obtained for PMMA/TiO2-PAA-M since they contained the largest amount of low molar mass residue. The TGA results showed that thermal and thermooxidative stability of polymer composites obtained in solution and in suspension was better than for the pure PMMA obtained in the same way., Predmet ovog rada je dobijanje i karakterizacija nanokompozita kod kojih polimernu matricu čini poli(metil metakrilat) (PMMA), a kao neorgansko punilo nanočestice titan-dioksida. Svi uzorci nanokompozita dobijeni su in situ polimerizacijom preko slobodnih radikala metil metakrilata (MMA) u prisustvu čestica punila. Površinska modifikacija korišćenih nanočestica titan-dioksida izvršena je palmitatom askorbinske kiseline. Uzorci nanokompozita su pripremljeni polimerizacijom metil metakrilata u rastvoru, u masi i suspenzionom polimerizacijom. Određene su vrednosti molarne mase PMMA ekstrahovanog iz kompozitnih uzoraka i dobijeno je da su one manje od vrednosti molarne mase čistog PMMA dobijenog na isti način, na osnovu čega se može zaključiti da nanočestice TiO2-PAA prisutne u toku polimerizacije u sva tri slučaja utiču na reakcije terminacije i dovode do smanjenja molarne mase PMMA matrice. Diferencijalnom skenirajućom kalorimetrijom i termogravimetrijskom analizom utvrđeno je i da način sinteze polimerne matrice i koncentracija čestica punila utiču na termička svojstva dobijenih polimernih nanokompozita.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Influence of the way of synthesis of poly(methyl methacrylate) in the presence of surface modified TiO2 nanoparticles on the properties of obtained nanocomposites, Uticaj načina sinteze poli(metil metakrilata) u prisustvu površinski modifikovanih TiO2 nanočestica na svojstva dobijenih nanokompozita",
pages = "489-473",
number = "6",
volume = "64",
doi = "10.2298/HEMIND100923059D"
}

Džunuzović, E., Marinović-Cincović, M., Džunuzović, J., Jeremić, K. B.,& Nedeljković, J.. (2010). Influence of the way of synthesis of poly(methyl methacrylate) in the presence of surface modified TiO2 nanoparticles on the properties of obtained nanocomposites. in Hemijska industrija
Association of Chemical Engineers of Serbia., 64(6), 473-489.
https://doi.org/10.2298/HEMIND100923059D

Džunuzović E, Marinović-Cincović M, Džunuzović J, Jeremić KB, Nedeljković J. Influence of the way of synthesis of poly(methyl methacrylate) in the presence of surface modified TiO2 nanoparticles on the properties of obtained nanocomposites. in Hemijska industrija. 2010;64(6):473-489.
doi:10.2298/HEMIND100923059D .

Džunuzović, Enis, Marinović-Cincović, Milena, Džunuzović, Jasna, Jeremić, Katarina B., Nedeljković, Jovan, "Influence of the way of synthesis of poly(methyl methacrylate) in the presence of surface modified TiO2 nanoparticles on the properties of obtained nanocomposites" in Hemijska industrija, 64, no. 6 (2010):473-489,
https://doi.org/10.2298/HEMIND100923059D . .

TY  - JOUR
AU  - Stojanović, Željko
AU  - Jeremić, Katarina
AU  - Jovanović, Slobodan
AU  - Nierling, Wolfgang
AU  - Lechner, Manfred Dieter
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5622
AB  - Uzorci karboksimetil skroba pripremljeni su reakcijom eterifikacije u heterogenom
medijumu. Tri uzorka su pripremljena iz kukuruznog skroba a tri iz skroba iz krompira. Stepen supstitucije sintetisanih uzoraka je iznosio od 0,40 do 1,10. Uzorci su
ispitivani metodama statičkog i dinamičkog rasipanja svetlosti i viskozimetrijom razblaženih rastvora u 0,10 M rastvoru NaCl kao rastvaraču na 25 °C. Određene su
vrednosti molarnih masa, MW, poluprečnika rotacije, Rg, hidrodinamičkog poluprečnika, Rh, i graničnog viskozitetnog broja, [η]. Utvrđeno je da su uzorci bez obzira na
tip skroba i stepen supstitucije međusobno slični. Fraktalne dimenzije, df, iznose 2,380
(Rg – MW) i 2,406 (Rη – MW), dok parametar ρ iznosi 1,195. Vrednost fraktalne dimenzije i parametra ρ karakteristične su vrednosti za ponašanje razgranatih klastera u
termodinamički dobrim rastvaračima.
AB  - Carboxymethyl starch samples were prepared by etherification in heterogeneous media. Three samples were prepared from corn starch and three samples from potato starch. Degree of substitution of prepared samples ranged from 0.40 to 1.10. The samples were investigated by static and dynamic light scattering and viscosity of diluted solution in 0.10 M NaCl as solvent at 25 °C. The values of molar mass, MW, radius of gyration, Rg, hydrodynamic radius, Rh, and limited viscosity number, [η] were determined. It was found that the samples are similar to each other regardless of the type of starch and the degree of substitution. Fractal dimension, d f, was equal to 2.380 (Rg - MW) and 2.406 (Rη - MW), while parameter ρ was 1.195. The values of fractal dimension and parameter ρ are characteristic values for the behavior of branched clusters in thermodynamically good solvents.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima
T1  - The shape and size of macromolecules of carboxymethyl starch in diluted solutions
EP  - 602
IS  - 6
SP  - 593
VL  - 63
DO  - 10.2298/HEMIND0906593S
ER  - 

@article{
author = "Stojanović, Željko and Jeremić, Katarina and Jovanović, Slobodan and Nierling, Wolfgang and Lechner, Manfred Dieter",
year = "2009",
abstract = "Uzorci karboksimetil skroba pripremljeni su reakcijom eterifikacije u heterogenom
medijumu. Tri uzorka su pripremljena iz kukuruznog skroba a tri iz skroba iz krompira. Stepen supstitucije sintetisanih uzoraka je iznosio od 0,40 do 1,10. Uzorci su
ispitivani metodama statičkog i dinamičkog rasipanja svetlosti i viskozimetrijom razblaženih rastvora u 0,10 M rastvoru NaCl kao rastvaraču na 25 °C. Određene su
vrednosti molarnih masa, MW, poluprečnika rotacije, Rg, hidrodinamičkog poluprečnika, Rh, i graničnog viskozitetnog broja, [η]. Utvrđeno je da su uzorci bez obzira na
tip skroba i stepen supstitucije međusobno slični. Fraktalne dimenzije, df, iznose 2,380
(Rg – MW) i 2,406 (Rη – MW), dok parametar ρ iznosi 1,195. Vrednost fraktalne dimenzije i parametra ρ karakteristične su vrednosti za ponašanje razgranatih klastera u
termodinamički dobrim rastvaračima., Carboxymethyl starch samples were prepared by etherification in heterogeneous media. Three samples were prepared from corn starch and three samples from potato starch. Degree of substitution of prepared samples ranged from 0.40 to 1.10. The samples were investigated by static and dynamic light scattering and viscosity of diluted solution in 0.10 M NaCl as solvent at 25 °C. The values of molar mass, MW, radius of gyration, Rg, hydrodynamic radius, Rh, and limited viscosity number, [η] were determined. It was found that the samples are similar to each other regardless of the type of starch and the degree of substitution. Fractal dimension, d f, was equal to 2.380 (Rg - MW) and 2.406 (Rη - MW), while parameter ρ was 1.195. The values of fractal dimension and parameter ρ are characteristic values for the behavior of branched clusters in thermodynamically good solvents.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima, The shape and size of macromolecules of carboxymethyl starch in diluted solutions",
pages = "602-593",
number = "6",
volume = "63",
doi = "10.2298/HEMIND0906593S"
}

Stojanović, Ž., Jeremić, K., Jovanović, S., Nierling, W.,& Lechner, M. D.. (2009). Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima. in Hemijska industrija
Association of Chemical Engineers of Serbia., 63(6), 593-602.
https://doi.org/10.2298/HEMIND0906593S

Stojanović Ž, Jeremić K, Jovanović S, Nierling W, Lechner MD. Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima. in Hemijska industrija. 2009;63(6):593-602.
doi:10.2298/HEMIND0906593S .

Stojanović, Željko, Jeremić, Katarina, Jovanović, Slobodan, Nierling, Wolfgang, Lechner, Manfred Dieter, "Oblik i veličina makromolekula karboksimetil skroba u razblaženim rastvorima" in Hemijska industrija, 63, no. 6 (2009):593-602,
https://doi.org/10.2298/HEMIND0906593S . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Vodnik, Vesna
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1477
AB  - TiO2 nanoparticles. surface modified with 6-palmitate ascorbic acid, were incorporated in polystyrene (PS) by in situ bulk radical polymerization of styrene using 2,2'-azobisisobutyronitrile as initiator. The molar mass and polydispersity of synthesized samples were estimated by gel permeation chromatography. The influence of surface modified TiO2 nanoparticles on the thermal properties of PS matrix was examined using thermogravimetry and differential scanning calorimetry. Molar mass and polydispersity of PS were not influenced by the presence of the TiO2 nanoparticles. On the other hand, PS/TiO2 nanocomposites have higher glass transition temperature and better thermal and thermooxidative stability than the pure PS.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene
EP  - 910
IS  - 11
SP  - 908
VL  - 63
DO  - 10.1016/j.matlet.2009.01.039
ER  - 

@article{
author = "Džunuzović, Enis and Vodnik, Vesna and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "TiO2 nanoparticles. surface modified with 6-palmitate ascorbic acid, were incorporated in polystyrene (PS) by in situ bulk radical polymerization of styrene using 2,2'-azobisisobutyronitrile as initiator. The molar mass and polydispersity of synthesized samples were estimated by gel permeation chromatography. The influence of surface modified TiO2 nanoparticles on the thermal properties of PS matrix was examined using thermogravimetry and differential scanning calorimetry. Molar mass and polydispersity of PS were not influenced by the presence of the TiO2 nanoparticles. On the other hand, PS/TiO2 nanocomposites have higher glass transition temperature and better thermal and thermooxidative stability than the pure PS.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene",
pages = "910-908",
number = "11",
volume = "63",
doi = "10.1016/j.matlet.2009.01.039"
}

Džunuzović, E., Vodnik, V., Jeremić, K. B.,& Nedeljković, J.. (2009). Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene. in Materials Letters
Elsevier Science Bv, Amsterdam., 63(11), 908-910.
https://doi.org/10.1016/j.matlet.2009.01.039

Džunuzović E, Vodnik V, Jeremić KB, Nedeljković J. Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene. in Materials Letters. 2009;63(11):908-910.
doi:10.1016/j.matlet.2009.01.039 .

Džunuzović, Enis, Vodnik, Vesna, Jeremić, Katarina B., Nedeljković, Jovan, "Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene" in Materials Letters, 63, no. 11 (2009):908-910,
https://doi.org/10.1016/j.matlet.2009.01.039 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1521
AB  - Poly(methyl methacrylate)/alpha-Fe2O3 Composites were prepared by in situ bulk radical polymerization of methyl methacrylate in the presence of the cubic alpha-Fe2O3 particles using 2,2'-azobisisobutyronitrile as initiator. The cubic a alpha-Fe2O3 particles were synthesized by forced hydrolysis of FeCl3 and characterized by X-ray diffraction analysis and transmission electron microscopy. The molar masses and molar mass distribution of synthesized PMMA samples were determined by gel permeation chromatography. The influence of alpha-Fe2O3 filler particles on the thermal properties of the PMMA matrix was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity of PMMA extracted from composite samples were not influenced by cubic alpha-Fe2O3 particles. The obtained composites have better thermal and thermooxiclative stability than pure PMMA. On the other hand, the values of the glass transition temperature of composite samples were identical to the glass transition temperature of pure PMMA.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Degradation and Stability
T1  - Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization
EP  - 704
IS  - 4
SP  - 701
VL  - 94
DO  - 10.1016/j.polymdegradstab.2008.12.018
ER  - 

@article{
author = "Džunuzović, Enis and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "Poly(methyl methacrylate)/alpha-Fe2O3 Composites were prepared by in situ bulk radical polymerization of methyl methacrylate in the presence of the cubic alpha-Fe2O3 particles using 2,2'-azobisisobutyronitrile as initiator. The cubic a alpha-Fe2O3 particles were synthesized by forced hydrolysis of FeCl3 and characterized by X-ray diffraction analysis and transmission electron microscopy. The molar masses and molar mass distribution of synthesized PMMA samples were determined by gel permeation chromatography. The influence of alpha-Fe2O3 filler particles on the thermal properties of the PMMA matrix was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity of PMMA extracted from composite samples were not influenced by cubic alpha-Fe2O3 particles. The obtained composites have better thermal and thermooxiclative stability than pure PMMA. On the other hand, the values of the glass transition temperature of composite samples were identical to the glass transition temperature of pure PMMA.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Degradation and Stability",
title = "Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization",
pages = "704-701",
number = "4",
volume = "94",
doi = "10.1016/j.polymdegradstab.2008.12.018"
}

Džunuzović, E., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2009). Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization. in Polymer Degradation and Stability
Elsevier Sci Ltd, Oxford., 94(4), 701-704.
https://doi.org/10.1016/j.polymdegradstab.2008.12.018

Džunuzović E, Marinović-Cincović M, Jeremić KB, Nedeljković J. Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization. in Polymer Degradation and Stability. 2009;94(4):701-704.
doi:10.1016/j.polymdegradstab.2008.12.018 .

Džunuzović, Enis, Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization" in Polymer Degradation and Stability, 94, no. 4 (2009):701-704,
https://doi.org/10.1016/j.polymdegradstab.2008.12.018 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Vuković, J.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1524
AB  - The surface of anatase TiO2 nanoparticles, obtained by the controlled hydrolysis of titanium tetrachloride, was modified by 6-palmitate ascorbic acid. The surface modified TiO2 nanoparticles were dispersed in methyl methacrylate and mixed with a appropriate amount of poly(methyl methacrylate) to obtain a syrup. The nano-composite sheets were made by bulk polymerization of the syrup in a glass sandwich cell using 2,2'-azobisisobutyronitrile as initiator. The molar masses and molar mass distributions of synthesized poly(methyl methacrylate) samples were determined by gel permeation chromatography. The content of unreacted double bonds in synthesized samples was determined by H-1 NMR spectroscopy. The influence of TiO2 nanoparticles on the thermal stability of the poly(methyl methacrylate) matrix was investigated using thermogravimetric analysis and differential scanning calorimetry. The synthesized samples of poly(methyl methacrylate) have different molar mass and polydispersity depending on the content of the surface modified TiO2 nanoparticles. The values of glass transition temperature of so prepared nanocomposite samples were lower than for pure poly(methyl methacrylate), while the glass transition temperature of samples preheated in inert atmosphere was very similar to the glass transition temperature of pure poly(methyl methacrylate). The thermal stability of nanocomposite samples in nitrogen and air was different from thermal stability of pure poly(methyl methacrylate). POLYM. COMPOS., 30:737-742, 2009.
PB  - Wiley-Blackwell, Malden
T2  - Polymer Composites
T1  - Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization
EP  - 742
IS  - 6
SP  - 737
VL  - 30
DO  - 10.1002/pc.20606
ER  - 

@article{
author = "Džunuzović, Enis and Marinović-Cincović, Milena and Vuković, J. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "The surface of anatase TiO2 nanoparticles, obtained by the controlled hydrolysis of titanium tetrachloride, was modified by 6-palmitate ascorbic acid. The surface modified TiO2 nanoparticles were dispersed in methyl methacrylate and mixed with a appropriate amount of poly(methyl methacrylate) to obtain a syrup. The nano-composite sheets were made by bulk polymerization of the syrup in a glass sandwich cell using 2,2'-azobisisobutyronitrile as initiator. The molar masses and molar mass distributions of synthesized poly(methyl methacrylate) samples were determined by gel permeation chromatography. The content of unreacted double bonds in synthesized samples was determined by H-1 NMR spectroscopy. The influence of TiO2 nanoparticles on the thermal stability of the poly(methyl methacrylate) matrix was investigated using thermogravimetric analysis and differential scanning calorimetry. The synthesized samples of poly(methyl methacrylate) have different molar mass and polydispersity depending on the content of the surface modified TiO2 nanoparticles. The values of glass transition temperature of so prepared nanocomposite samples were lower than for pure poly(methyl methacrylate), while the glass transition temperature of samples preheated in inert atmosphere was very similar to the glass transition temperature of pure poly(methyl methacrylate). The thermal stability of nanocomposite samples in nitrogen and air was different from thermal stability of pure poly(methyl methacrylate). POLYM. COMPOS., 30:737-742, 2009.",
publisher = "Wiley-Blackwell, Malden",
journal = "Polymer Composites",
title = "Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization",
pages = "742-737",
number = "6",
volume = "30",
doi = "10.1002/pc.20606"
}

Džunuzović, E., Marinović-Cincović, M., Vuković, J., Jeremić, K. B.,& Nedeljković, J.. (2009). Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization. in Polymer Composites
Wiley-Blackwell, Malden., 30(6), 737-742.
https://doi.org/10.1002/pc.20606

Džunuzović E, Marinović-Cincović M, Vuković J, Jeremić KB, Nedeljković J. Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization. in Polymer Composites. 2009;30(6):737-742.
doi:10.1002/pc.20606 .

Džunuzović, Enis, Marinović-Cincović, Milena, Vuković, J., Jeremić, Katarina B., Nedeljković, Jovan, "Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization" in Polymer Composites, 30, no. 6 (2009):737-742,
https://doi.org/10.1002/pc.20606 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Vuković, J.
AU  - Nedeljković, Jovan
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1267
AB  - alpha-Fe2O3 nanorods were incorporated into poly(methyl methacrylate) (PMMA) by in situ radical polymerisation of methyl methacrylate initiated by 2,2 '-azobisisobutyronitrile. The alpha-Fe2O3 nanorods were synthesized by forced hydrolysis of FeCl3 and structural characterization was performed by X-ray diffraction and transmission electron microscopy. The molar mass and the polydispersity index of synthesized PMMA samples were determined by gel permeation chromatography. The content of residual monomer was determined by H-1 NMR spectroscopy. The influence of alpha-Fe2O3 nanorods on the thermal stability of the polymer was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity index of PMMA were dependent on the content of alpha-Fe2O3 nanorods. The values of the glass transition temperature of the nanocomposites were lower compared to pure PMMA. Also, the thermal stability of nanocomposites in nitrogen and air was different from that of pure PMMA.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Degradation and Stability
T1  - Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate
EP  - 83
IS  - 1
SP  - 77
VL  - 93
DO  - 10.1016/j.polymdegradstab.2007.10.015
ER  - 

@article{
author = "Džunuzović, Enis and Marinović-Cincović, Milena and Jeremić, Katarina B. and Vuković, J. and Nedeljković, Jovan",
year = "2008",
abstract = "alpha-Fe2O3 nanorods were incorporated into poly(methyl methacrylate) (PMMA) by in situ radical polymerisation of methyl methacrylate initiated by 2,2 '-azobisisobutyronitrile. The alpha-Fe2O3 nanorods were synthesized by forced hydrolysis of FeCl3 and structural characterization was performed by X-ray diffraction and transmission electron microscopy. The molar mass and the polydispersity index of synthesized PMMA samples were determined by gel permeation chromatography. The content of residual monomer was determined by H-1 NMR spectroscopy. The influence of alpha-Fe2O3 nanorods on the thermal stability of the polymer was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity index of PMMA were dependent on the content of alpha-Fe2O3 nanorods. The values of the glass transition temperature of the nanocomposites were lower compared to pure PMMA. Also, the thermal stability of nanocomposites in nitrogen and air was different from that of pure PMMA.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Degradation and Stability",
title = "Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate",
pages = "83-77",
number = "1",
volume = "93",
doi = "10.1016/j.polymdegradstab.2007.10.015"
}

Džunuzović, E., Marinović-Cincović, M., Jeremić, K. B., Vuković, J.,& Nedeljković, J.. (2008). Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate. in Polymer Degradation and Stability
Elsevier Sci Ltd, Oxford., 93(1), 77-83.
https://doi.org/10.1016/j.polymdegradstab.2007.10.015

Džunuzović E, Marinović-Cincović M, Jeremić KB, Vuković J, Nedeljković J. Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate. in Polymer Degradation and Stability. 2008;93(1):77-83.
doi:10.1016/j.polymdegradstab.2007.10.015 .

Džunuzović, Enis, Marinović-Cincović, Milena, Jeremić, Katarina B., Vuković, J., Nedeljković, Jovan, "Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate" in Polymer Degradation and Stability, 93, no. 1 (2008):77-83,
https://doi.org/10.1016/j.polymdegradstab.2007.10.015 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1134
AB  - Surface modified TiO2 nanoparticles dissolved in toluene were encapsulated in PMMA by in situ radical polymerization of methyl methacrylate initiated by 2,2'-azobisisobutyronitrile. The surface modification of the TiO2 nanoparticles (average diameter of 4.5 nm) was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The surface modified TiO2/nanoparticles were characterized using UV-Vis and FTIR spectroscopy, while the obtained polymer nanocomposites were characterized using reflection and H-1 NMR spectroscopy, as well as gel permeation chromatography. The influence of the TiO2 nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. The glass transition temperature of the polymer was not influenced by the presence of the nanoparticles while the thermal stability was significantly improved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - European Polymer Journal
T1  - In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles
EP  - 3726
IS  - 9
SP  - 3719
VL  - 43
DO  - 10.1016/j.eurpolymj.2007.06.026
ER  - 

@article{
author = "Džunuzović, Enis and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2007",
abstract = "Surface modified TiO2 nanoparticles dissolved in toluene were encapsulated in PMMA by in situ radical polymerization of methyl methacrylate initiated by 2,2'-azobisisobutyronitrile. The surface modification of the TiO2 nanoparticles (average diameter of 4.5 nm) was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The surface modified TiO2/nanoparticles were characterized using UV-Vis and FTIR spectroscopy, while the obtained polymer nanocomposites were characterized using reflection and H-1 NMR spectroscopy, as well as gel permeation chromatography. The influence of the TiO2 nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. The glass transition temperature of the polymer was not influenced by the presence of the nanoparticles while the thermal stability was significantly improved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "European Polymer Journal",
title = "In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles",
pages = "3726-3719",
number = "9",
volume = "43",
doi = "10.1016/j.eurpolymj.2007.06.026"
}

Džunuzović, E., Jeremić, K. B.,& Nedeljković, J.. (2007). In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles. in European Polymer Journal
Pergamon-Elsevier Science Ltd, Oxford., 43(9), 3719-3726.
https://doi.org/10.1016/j.eurpolymj.2007.06.026

Džunuzović E, Jeremić KB, Nedeljković J. In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles. in European Polymer Journal. 2007;43(9):3719-3726.
doi:10.1016/j.eurpolymj.2007.06.026 .

Džunuzović, Enis, Jeremić, Katarina B., Nedeljković, Jovan, "In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles" in European Polymer Journal, 43, no. 9 (2007):3719-3726,
https://doi.org/10.1016/j.eurpolymj.2007.06.026 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Tasić, S.
AU  - Božić, B.
AU  - Jeremić, Katarina B.
AU  - Dunjić, Branko
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1005
AB  - Urethane acrylate resins based on partially modified aliphatic hyperbranched polyesters (HBP) were synthesized. HBP of the second and the third pseudo-generation were synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of 60% of the OH end-groups was carried out with isononanoic acid. Urethane acrylates with different degrees of acrylation were obtained by reaction of partially modified HBP and different amounts of acrylate-isocyanate adduct (NCO), which had been previously obtained by reaction of equimolar amounts of isophorone diisocyanate and 2-hydroxyethyl acrylate. The synthesized samples were characterized by FT-IR, H-1 and C-13 NMR spectroscopy and GPC. The rheological properties of uncured samples and the mechanical and thermal properties of UV cured urethane acrylates diluted with 20 wt.% hexanediol diacrylate were examined. The modification of the OH end-groups with isononanoic acid caused a rapid decrease in the viscosity of the HBPs. The examined properties of the urethane acrylates mainly depended on the degree of acrylation.
PB  - Elsevier, Amsterdam
T2  - Reactive & Functional Polymers
T1  - Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid
EP  - 1105
IS  - 10
SP  - 1097
VL  - 66
DO  - 10.1016/j.reactfunctpolym.2006.01.016
ER  - 

@article{
author = "Džunuzović, Enis and Tasić, S. and Božić, B. and Jeremić, Katarina B. and Dunjić, Branko",
year = "2006",
abstract = "Urethane acrylate resins based on partially modified aliphatic hyperbranched polyesters (HBP) were synthesized. HBP of the second and the third pseudo-generation were synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of 60% of the OH end-groups was carried out with isononanoic acid. Urethane acrylates with different degrees of acrylation were obtained by reaction of partially modified HBP and different amounts of acrylate-isocyanate adduct (NCO), which had been previously obtained by reaction of equimolar amounts of isophorone diisocyanate and 2-hydroxyethyl acrylate. The synthesized samples were characterized by FT-IR, H-1 and C-13 NMR spectroscopy and GPC. The rheological properties of uncured samples and the mechanical and thermal properties of UV cured urethane acrylates diluted with 20 wt.% hexanediol diacrylate were examined. The modification of the OH end-groups with isononanoic acid caused a rapid decrease in the viscosity of the HBPs. The examined properties of the urethane acrylates mainly depended on the degree of acrylation.",
publisher = "Elsevier, Amsterdam",
journal = "Reactive & Functional Polymers",
title = "Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid",
pages = "1105-1097",
number = "10",
volume = "66",
doi = "10.1016/j.reactfunctpolym.2006.01.016"
}

Džunuzović, E., Tasić, S., Božić, B., Jeremić, K. B.,& Dunjić, B.. (2006). Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid. in Reactive & Functional Polymers
Elsevier, Amsterdam., 66(10), 1097-1105.
https://doi.org/10.1016/j.reactfunctpolym.2006.01.016

Džunuzović E, Tasić S, Božić B, Jeremić KB, Dunjić B. Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid. in Reactive & Functional Polymers. 2006;66(10):1097-1105.
doi:10.1016/j.reactfunctpolym.2006.01.016 .

Džunuzović, Enis, Tasić, S., Božić, B., Jeremić, Katarina B., Dunjić, Branko, "Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid" in Reactive & Functional Polymers, 66, no. 10 (2006):1097-1105,
https://doi.org/10.1016/j.reactfunctpolym.2006.01.016 . .

TY  - JOUR
AU  - Nestorović, Gordana D.
AU  - Jovanović, Slobodan M.
AU  - Jeremić, Katarina B.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5502
AB  - The electrically conductive, micron-sized, core/shell polystyrene (PS)/polyaniline (PANI) composite particles were synthesized by chemical oxidative polymerization of aniline in the presence of micron-sized PS particles in 1 M HCl. The conditions of the dispersion polymerization of styrene were optimized. The influence of the initiator type employed for the chemical oxidative polymerization of aniline and the aniline (ANI) concentration on the PS/PANI particle size and size distribution and their conductivity was investigated. The obtained results show that the conductivity of the samples increased with increasing ANI concentration. The conductivity of the PS/PANI composite particles obtained with the highest ANI concentration was of the same order of magnitude as that for PANI powder. The particle size did not depend on the concentration of ANI, while the particle size distribution was narrower at higher concentrations of ANI.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites
T1  - Утицај неких фактора на електричну проводљивост и величину честица композита са језгром од полистирена и омотачем од полианилина
EP  - 1271
IS  - 11
SP  - 1263
VL  - 70
DO  - 10.2298/JSC0511263N
ER  - 

@article{
author = "Nestorović, Gordana D. and Jovanović, Slobodan M. and Jeremić, Katarina B.",
year = "2005",
abstract = "The electrically conductive, micron-sized, core/shell polystyrene (PS)/polyaniline (PANI) composite particles were synthesized by chemical oxidative polymerization of aniline in the presence of micron-sized PS particles in 1 M HCl. The conditions of the dispersion polymerization of styrene were optimized. The influence of the initiator type employed for the chemical oxidative polymerization of aniline and the aniline (ANI) concentration on the PS/PANI particle size and size distribution and their conductivity was investigated. The obtained results show that the conductivity of the samples increased with increasing ANI concentration. The conductivity of the PS/PANI composite particles obtained with the highest ANI concentration was of the same order of magnitude as that for PANI powder. The particle size did not depend on the concentration of ANI, while the particle size distribution was narrower at higher concentrations of ANI.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites, Утицај неких фактора на електричну проводљивост и величину честица композита са језгром од полистирена и омотачем од полианилина",
pages = "1271-1263",
number = "11",
volume = "70",
doi = "10.2298/JSC0511263N"
}

Nestorović, G. D., Jovanović, S. M.,& Jeremić, K. B.. (2005). The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 70(11), 1263-1271.
https://doi.org/10.2298/JSC0511263N

Nestorović GD, Jovanović SM, Jeremić KB. The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites. in Journal of the Serbian Chemical Society. 2005;70(11):1263-1271.
doi:10.2298/JSC0511263N .

Nestorović, Gordana D., Jovanović, Slobodan M., Jeremić, Katarina B., "The influence of some factors on the electrical conductivity and particle size of core/shell polystyrene/polyaniline composites" in Journal of the Serbian Chemical Society, 70, no. 11 (2005):1263-1271,
https://doi.org/10.2298/JSC0511263N . .

TY  - JOUR
AU  - Jovanović, Slobodan M.
AU  - Nastasović, Aleksandra
AU  - Džunuzović, Enis
AU  - Jeremić, Katarina B.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/763
AB  - Twelve modified dithiocarbamates and a thiuramdisulfide used for the initiation of methyl methacrylate (MMA) polymerization were synthesized in this study. The polymerization of MMA was followed by determine the yield and molar mass of the obtained PMMA as a function of polymerization time. Four of the synthesized dithiocarbamates S-benzyl-N,N-dibenzyldithiocarbamate, S-allyl-N,N-dibenzyldithiocarbamate S-benzyl-N,N-diisobutyldithiocarbamate and S-benzoyl-N,N-diisobutyldithiocarbamate, as well as N,N,N',N'-tetrabenzylthiuramdisulfide acted as iniferters. They were active as the initiators of the photo and/or thermally initiated radical polymerization of MMA in bulk and inert solvents (benzene and toluene). S Benzyl - N,N - dibenzyldithiocarbamate can be successfully used for the initiation of MMA polymerization in a polar solvent such as dimethylacetamide.
AB  - U okviru ovoga rada izvedena je sinteza dvanaest modifikovanih ditiokarbamata i jednog tiuramdisulfida, koji su korišćeni kao inicijatori polimerizacije metilmetakrilata. Određivanjem zavisnosti prinosa i molarne mase polimetilmetakrilata od vremena polimerizacije pokazano je da se četiri od sintetizovanih ditiokarbamata: S-benzil-N,N-dibenzilditiokarbamat S-alil-N,N-dibenzilditiokarbamat, S-benzil-N, N-diizobutilditiokarbamat S-benzoil-N, N-diizobutilditiokarbamat, kao i N,N,N',N' tetrabenziltiuramdisulfid ponašaju kao iniferteri i da imaju zadovoljavajuću aktivnost kao inicijatori foto i/ili termički inicirane radikalne polimerizacije MMA u masi i inertnom rastvaraču (benzenu i toluenu). Pokazano je takođe da se iniferter S-benzil-N,N-dibenzilditiokarbamat može vrlo uspešno koristiti i za iniciranje polimerizacije MMA u polarnom rastvaraču kao što je dimetilacetamid.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Initiation of MMA polymerization by iniferters based on dithiocarbamates
T1  - Iniciranje polimerizacije metilmetakrilata iniferterima na bazi ditiokarbamata
EP  - 316
IS  - 11-12
SP  - 311
VL  - 59
DO  - 10.2298/HEMIND0512311J
ER  - 

@article{
author = "Jovanović, Slobodan M. and Nastasović, Aleksandra and Džunuzović, Enis and Jeremić, Katarina B.",
year = "2005",
abstract = "Twelve modified dithiocarbamates and a thiuramdisulfide used for the initiation of methyl methacrylate (MMA) polymerization were synthesized in this study. The polymerization of MMA was followed by determine the yield and molar mass of the obtained PMMA as a function of polymerization time. Four of the synthesized dithiocarbamates S-benzyl-N,N-dibenzyldithiocarbamate, S-allyl-N,N-dibenzyldithiocarbamate S-benzyl-N,N-diisobutyldithiocarbamate and S-benzoyl-N,N-diisobutyldithiocarbamate, as well as N,N,N',N'-tetrabenzylthiuramdisulfide acted as iniferters. They were active as the initiators of the photo and/or thermally initiated radical polymerization of MMA in bulk and inert solvents (benzene and toluene). S Benzyl - N,N - dibenzyldithiocarbamate can be successfully used for the initiation of MMA polymerization in a polar solvent such as dimethylacetamide., U okviru ovoga rada izvedena je sinteza dvanaest modifikovanih ditiokarbamata i jednog tiuramdisulfida, koji su korišćeni kao inicijatori polimerizacije metilmetakrilata. Određivanjem zavisnosti prinosa i molarne mase polimetilmetakrilata od vremena polimerizacije pokazano je da se četiri od sintetizovanih ditiokarbamata: S-benzil-N,N-dibenzilditiokarbamat S-alil-N,N-dibenzilditiokarbamat, S-benzil-N, N-diizobutilditiokarbamat S-benzoil-N, N-diizobutilditiokarbamat, kao i N,N,N',N' tetrabenziltiuramdisulfid ponašaju kao iniferteri i da imaju zadovoljavajuću aktivnost kao inicijatori foto i/ili termički inicirane radikalne polimerizacije MMA u masi i inertnom rastvaraču (benzenu i toluenu). Pokazano je takođe da se iniferter S-benzil-N,N-dibenzilditiokarbamat može vrlo uspešno koristiti i za iniciranje polimerizacije MMA u polarnom rastvaraču kao što je dimetilacetamid.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Initiation of MMA polymerization by iniferters based on dithiocarbamates, Iniciranje polimerizacije metilmetakrilata iniferterima na bazi ditiokarbamata",
pages = "316-311",
number = "11-12",
volume = "59",
doi = "10.2298/HEMIND0512311J"
}

Jovanović, S. M., Nastasović, A., Džunuzović, E.,& Jeremić, K. B.. (2005). Initiation of MMA polymerization by iniferters based on dithiocarbamates. in Hemijska industrija
Association of Chemical Engineers of Serbia., 59(11-12), 311-316.
https://doi.org/10.2298/HEMIND0512311J

Jovanović SM, Nastasović A, Džunuzović E, Jeremić KB. Initiation of MMA polymerization by iniferters based on dithiocarbamates. in Hemijska industrija. 2005;59(11-12):311-316.
doi:10.2298/HEMIND0512311J .

Jovanović, Slobodan M., Nastasović, Aleksandra, Džunuzović, Enis, Jeremić, Katarina B., "Initiation of MMA polymerization by iniferters based on dithiocarbamates" in Hemijska industrija, 59, no. 11-12 (2005):311-316,
https://doi.org/10.2298/HEMIND0512311J . .

TY  - JOUR
AU  - Stojanović, Z
AU  - Katsikas, Lynne
AU  - Popović, Ivanka
AU  - Jovanović, S
AU  - Jeremić, Katarina B.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/851
AB  - Starch esterification with benzoyl chloride was performed in two steps, the first being the alkali treatment of the starch and the second, esterification. Samples of hydrophobic starch benzoate were synthesized with degrees of substitution: 0.73.1.18 and 1.16 and their thermal stability was investigated by non-oxidative, non-isothermal thermogravimetry. It was shown that starch benzoate was thermally less stable than native starch, the thermal stability decreasing with increasing degree of substitution. The results indicated that the scission of CO2 and/or benzoyl groups probably occurred in the temperature region 100-260 degreesC, depending on the dear of substitution. The overall activation energies of thermal degradation were calculated by the Flynn-Wall method.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Degradation and Stability
T1  - Thermal stability of starch benzoate
EP  - 182
IS  - 1
SP  - 177
VL  - 87
DO  - 10.1016/j.polymdegradstab.2004.07.018
ER  - 

@article{
author = "Stojanović, Z and Katsikas, Lynne and Popović, Ivanka and Jovanović, S and Jeremić, Katarina B.",
year = "2005",
abstract = "Starch esterification with benzoyl chloride was performed in two steps, the first being the alkali treatment of the starch and the second, esterification. Samples of hydrophobic starch benzoate were synthesized with degrees of substitution: 0.73.1.18 and 1.16 and their thermal stability was investigated by non-oxidative, non-isothermal thermogravimetry. It was shown that starch benzoate was thermally less stable than native starch, the thermal stability decreasing with increasing degree of substitution. The results indicated that the scission of CO2 and/or benzoyl groups probably occurred in the temperature region 100-260 degreesC, depending on the dear of substitution. The overall activation energies of thermal degradation were calculated by the Flynn-Wall method.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Degradation and Stability",
title = "Thermal stability of starch benzoate",
pages = "182-177",
number = "1",
volume = "87",
doi = "10.1016/j.polymdegradstab.2004.07.018"
}

Stojanović, Z., Katsikas, L., Popović, I., Jovanović, S.,& Jeremić, K. B.. (2005). Thermal stability of starch benzoate. in Polymer Degradation and Stability
Elsevier Sci Ltd, Oxford., 87(1), 177-182.
https://doi.org/10.1016/j.polymdegradstab.2004.07.018

Stojanović Z, Katsikas L, Popović I, Jovanović S, Jeremić KB. Thermal stability of starch benzoate. in Polymer Degradation and Stability. 2005;87(1):177-182.
doi:10.1016/j.polymdegradstab.2004.07.018 .

Stojanović, Z, Katsikas, Lynne, Popović, Ivanka, Jovanović, S, Jeremić, Katarina B., "Thermal stability of starch benzoate" in Polymer Degradation and Stability, 87, no. 1 (2005):177-182,
https://doi.org/10.1016/j.polymdegradstab.2004.07.018 . .

TY  - JOUR
AU  - Milutinović Nikolić, Aleksandra
AU  - Talijan, Nadežda M.
AU  - Jeremić, Katarina B.
AU  - Aleksić, Radoslav
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5368
AB  - The goal of these investigations was to define the process parameters that enable the formation of a composite coating with the most uniform thickness on an optical fiber. The composite coating was obtained by drawing the optical fiber through a reservoir with a die at the bottom. The reservoir was supplied with a dispersion of magnetic powder in a polymer solution. The effect of the dispersion viscosity, powder concentration and drawing rate on the uniformity of the composite coating thickness under laboratory conditions was investigated on a defined system to establish the optimal coating conditions. Dispersions were formed by dispersing different concentrations of Ba-ferrite in a poly(ethylene-co-vinyl acetate) solution in toluene. The thickness of the coatings and its uniformity were determined by microscopic analysis and further evaluated by mathematical-statistical analysis. The smallest standard deviation (S.D.) of the mean value of the diameter of the optical fiber with a composite coating was chosen as the criteria for defining the most uniform composite coating. The results show that the most uniform coatings were obtained with a dispersion viscosity whose value was about 1.2 Pa s. All the process parameters should be established in accordance with this viscosity value, enabling the formation of the most uniform composite coating for the investigated system.
PB  - Elsevier
T2  - Materials Letters
T1  - Optical fibers with composite magnetic coating
EP  - 155
IS  - 3
SP  - 148
VL  - 56
DO  - 10.1016/S0167-577X(02)00431-7
ER  - 

@article{
author = "Milutinović Nikolić, Aleksandra and Talijan, Nadežda M. and Jeremić, Katarina B. and Aleksić, Radoslav",
year = "2002",
abstract = "The goal of these investigations was to define the process parameters that enable the formation of a composite coating with the most uniform thickness on an optical fiber. The composite coating was obtained by drawing the optical fiber through a reservoir with a die at the bottom. The reservoir was supplied with a dispersion of magnetic powder in a polymer solution. The effect of the dispersion viscosity, powder concentration and drawing rate on the uniformity of the composite coating thickness under laboratory conditions was investigated on a defined system to establish the optimal coating conditions. Dispersions were formed by dispersing different concentrations of Ba-ferrite in a poly(ethylene-co-vinyl acetate) solution in toluene. The thickness of the coatings and its uniformity were determined by microscopic analysis and further evaluated by mathematical-statistical analysis. The smallest standard deviation (S.D.) of the mean value of the diameter of the optical fiber with a composite coating was chosen as the criteria for defining the most uniform composite coating. The results show that the most uniform coatings were obtained with a dispersion viscosity whose value was about 1.2 Pa s. All the process parameters should be established in accordance with this viscosity value, enabling the formation of the most uniform composite coating for the investigated system.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Optical fibers with composite magnetic coating",
pages = "155-148",
number = "3",
volume = "56",
doi = "10.1016/S0167-577X(02)00431-7"
}

Milutinović Nikolić, A., Talijan, N. M., Jeremić, K. B.,& Aleksić, R.. (2002). Optical fibers with composite magnetic coating. in Materials Letters
Elsevier., 56(3), 148-155.
https://doi.org/10.1016/S0167-577X(02)00431-7

Milutinović Nikolić A, Talijan NM, Jeremić KB, Aleksić R. Optical fibers with composite magnetic coating. in Materials Letters. 2002;56(3):148-155.
doi:10.1016/S0167-577X(02)00431-7 .

Milutinović Nikolić, Aleksandra, Talijan, Nadežda M., Jeremić, Katarina B., Aleksić, Radoslav, "Optical fibers with composite magnetic coating" in Materials Letters, 56, no. 3 (2002):148-155,
https://doi.org/10.1016/S0167-577X(02)00431-7 . .

TY  - JOUR
AU  - Jeremić, Katarina B.
AU  - Dunjić, Branko
AU  - Đonlagić, Jasna
AU  - Jovanović, Slobodan
PY  - 1998
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/171
AB  - Thermoplastic starch (TPS) was blended in a twin screw mixer with 5 and 10 mass % of poly(ethylene-co-acrylic acid) (EAA), poly(ethylene-co-vinyl acetate) (EVA) or cellulose acetate (CA) in order to improve the TPS properties. The influence of such low amounts of thermoplastic polymer (TPP) on the processability, mechanical properties and water resistance of TPS was investigated. The specimens for mechanical properties determinaiton were conditioned at 45, 67 acid 85% relative humidity (RH) before measurements. Processability, characterized by viscosity vs. shear rate dependence, was determined by capillary rheometry. The obtained results showed that the TPS blends behaved as pseudoplastic polymers and that even 10 mass% of EAA or EVA significantly decreased the TPS viscosity, whereas addition of the same amount of CA had no influence on the TPS viscosity. Tensile measurements showed that the RH had a much larger influence on the tensile properties than the addition of the investigated TPP. Tensile strength and tensile modulus values for TPS and its blends, after conditioning at 45% RH were an order of magnitude larger than the values for the corresponding samples kept at 85% RH, whereas elongation at break values were nearly ten times smaller. Dynamic mechanical analysis of the TPS and its blends was performed using a mechanical spectrometer. The specimens were subjected to dynamic torsion at a constant frequency in the temperature range from 30 to 170 degrees C. The glass transition temperature, determined from the temperature dependence of tan delta, was influenced much more by relative humidity than by the type of TPP used. The swelling of the TPS and the investigated blends was determined gravimetrically. It was found that the TPS/EAA blends had the largest water resistance.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Blends of thermoplastic starch and some thermoplastic polymers
EP  - 762
IS  - 10
SP  - 753
VL  - 63
UR  - https://hdl.handle.net/21.15107/rcub_technorep_171
ER  - 

@article{
author = "Jeremić, Katarina B. and Dunjić, Branko and Đonlagić, Jasna and Jovanović, Slobodan",
year = "1998",
abstract = "Thermoplastic starch (TPS) was blended in a twin screw mixer with 5 and 10 mass % of poly(ethylene-co-acrylic acid) (EAA), poly(ethylene-co-vinyl acetate) (EVA) or cellulose acetate (CA) in order to improve the TPS properties. The influence of such low amounts of thermoplastic polymer (TPP) on the processability, mechanical properties and water resistance of TPS was investigated. The specimens for mechanical properties determinaiton were conditioned at 45, 67 acid 85% relative humidity (RH) before measurements. Processability, characterized by viscosity vs. shear rate dependence, was determined by capillary rheometry. The obtained results showed that the TPS blends behaved as pseudoplastic polymers and that even 10 mass% of EAA or EVA significantly decreased the TPS viscosity, whereas addition of the same amount of CA had no influence on the TPS viscosity. Tensile measurements showed that the RH had a much larger influence on the tensile properties than the addition of the investigated TPP. Tensile strength and tensile modulus values for TPS and its blends, after conditioning at 45% RH were an order of magnitude larger than the values for the corresponding samples kept at 85% RH, whereas elongation at break values were nearly ten times smaller. Dynamic mechanical analysis of the TPS and its blends was performed using a mechanical spectrometer. The specimens were subjected to dynamic torsion at a constant frequency in the temperature range from 30 to 170 degrees C. The glass transition temperature, determined from the temperature dependence of tan delta, was influenced much more by relative humidity than by the type of TPP used. The swelling of the TPS and the investigated blends was determined gravimetrically. It was found that the TPS/EAA blends had the largest water resistance.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Blends of thermoplastic starch and some thermoplastic polymers",
pages = "762-753",
number = "10",
volume = "63",
url = "https://hdl.handle.net/21.15107/rcub_technorep_171"
}

Jeremić, K. B., Dunjić, B., Đonlagić, J.,& Jovanović, S.. (1998). Blends of thermoplastic starch and some thermoplastic polymers. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 63(10), 753-762.
https://hdl.handle.net/21.15107/rcub_technorep_171

Jeremić KB, Dunjić B, Đonlagić J, Jovanović S. Blends of thermoplastic starch and some thermoplastic polymers. in Journal of the Serbian Chemical Society. 1998;63(10):753-762.
https://hdl.handle.net/21.15107/rcub_technorep_171 .

Jeremić, Katarina B., Dunjić, Branko, Đonlagić, Jasna, Jovanović, Slobodan, "Blends of thermoplastic starch and some thermoplastic polymers" in Journal of the Serbian Chemical Society, 63, no. 10 (1998):753-762,
https://hdl.handle.net/21.15107/rcub_technorep_171 .

TY  - JOUR
AU  - Jovanović, Slobodan
AU  - Jeremić, Katarina B.
AU  - Jovanović, Renata
AU  - Đonlagić, Jasna
AU  - Dunjić, Branko
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/115
AB  - Native starch and WX-starch, i.e., native starch enriched with amylopectin, were mixed with plasticizers and thermomechanically treated in a twin screw mixer in order to obtain thermoplastic starch. Ethylene glycol, propane tricl (glycerine) or poly(ethylene glycol) with a molar mass less than 1000 g/mol were used as plasticizers. Transformation to thermoplastic starch was only successful when glycerine or ethylene glycol were used as the plasticizers, the temperature of the thermomechanical treatment being dependent on the plasticizer and starch used. Rheological properties of the obtained thermoplastic starch were determined using a mechanical spectrometer. As a result of these measurements, the complex viscosity (η*), shear moćulus of stored (G') and of lost energy (G'') were obtained as a function of frequency at constant temperature. The measurements were performed at three temperatures: 140, 170 and 210°C. The results obtained showed that the thermoplastic starch behaved like a typical thermoplastic polymer.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Preparation of thermoplastic starch
EP  - 629
IS  - 8
SP  - 623
VL  - 62
UR  - https://hdl.handle.net/21.15107/rcub_technorep_115
ER  - 

@article{
author = "Jovanović, Slobodan and Jeremić, Katarina B. and Jovanović, Renata and Đonlagić, Jasna and Dunjić, Branko",
year = "1997",
abstract = "Native starch and WX-starch, i.e., native starch enriched with amylopectin, were mixed with plasticizers and thermomechanically treated in a twin screw mixer in order to obtain thermoplastic starch. Ethylene glycol, propane tricl (glycerine) or poly(ethylene glycol) with a molar mass less than 1000 g/mol were used as plasticizers. Transformation to thermoplastic starch was only successful when glycerine or ethylene glycol were used as the plasticizers, the temperature of the thermomechanical treatment being dependent on the plasticizer and starch used. Rheological properties of the obtained thermoplastic starch were determined using a mechanical spectrometer. As a result of these measurements, the complex viscosity (η*), shear moćulus of stored (G') and of lost energy (G'') were obtained as a function of frequency at constant temperature. The measurements were performed at three temperatures: 140, 170 and 210°C. The results obtained showed that the thermoplastic starch behaved like a typical thermoplastic polymer.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Preparation of thermoplastic starch",
pages = "629-623",
number = "8",
volume = "62",
url = "https://hdl.handle.net/21.15107/rcub_technorep_115"
}

Jovanović, S., Jeremić, K. B., Jovanović, R., Đonlagić, J.,& Dunjić, B.. (1997). Preparation of thermoplastic starch. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 62(8), 623-629.
https://hdl.handle.net/21.15107/rcub_technorep_115

Jovanović S, Jeremić KB, Jovanović R, Đonlagić J, Dunjić B. Preparation of thermoplastic starch. in Journal of the Serbian Chemical Society. 1997;62(8):623-629.
https://hdl.handle.net/21.15107/rcub_technorep_115 .

Jovanović, Slobodan, Jeremić, Katarina B., Jovanović, Renata, Đonlagić, Jasna, Dunjić, Branko, "Preparation of thermoplastic starch" in Journal of the Serbian Chemical Society, 62, no. 8 (1997):623-629,
https://hdl.handle.net/21.15107/rcub_technorep_115 .

TY  - JOUR
AU  - Katsikas, Lynne
AU  - Jeremić, Katarina B.
AU  - Jovanović, S.
AU  - Veličković, Jovan S.
AU  - Popović, Ivanka
PY  - 1993
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/50
AB  - The effect of molar mass and, in the case of dextran, of the degree of branching on the thermal degradation kinetics of dextran and pullulan was studied in the presence and absence of oxygen. Although the initial mass loss of the dextran samples occurred at higher temperatures than that of the pullulan samples, the overall thermal degradation activation energies were lower for dextran than for pullulan. In the case of dextran the thermal stability was found to decrease with molar mass and degree of branching. The molar mass of pullulan, in the range of 104 to 105 g/mol, appeared to have no significant influence on the thermal characteristics of the samples.
PB  - John Wiley & Sons Ltd, W Sussex
T2  - Journal of Thermal Analysis
T1  - The thermal degradation kinetics of dextran and pullulan
EP  - 517
IS  - 2
SP  - 511
VL  - 40
DO  - 10.1007/BF02546620
ER  - 

@article{
author = "Katsikas, Lynne and Jeremić, Katarina B. and Jovanović, S. and Veličković, Jovan S. and Popović, Ivanka",
year = "1993",
abstract = "The effect of molar mass and, in the case of dextran, of the degree of branching on the thermal degradation kinetics of dextran and pullulan was studied in the presence and absence of oxygen. Although the initial mass loss of the dextran samples occurred at higher temperatures than that of the pullulan samples, the overall thermal degradation activation energies were lower for dextran than for pullulan. In the case of dextran the thermal stability was found to decrease with molar mass and degree of branching. The molar mass of pullulan, in the range of 104 to 105 g/mol, appeared to have no significant influence on the thermal characteristics of the samples.",
publisher = "John Wiley & Sons Ltd, W Sussex",
journal = "Journal of Thermal Analysis",
title = "The thermal degradation kinetics of dextran and pullulan",
pages = "517-511",
number = "2",
volume = "40",
doi = "10.1007/BF02546620"
}

Katsikas, L., Jeremić, K. B., Jovanović, S., Veličković, J. S.,& Popović, I.. (1993). The thermal degradation kinetics of dextran and pullulan. in Journal of Thermal Analysis
John Wiley & Sons Ltd, W Sussex., 40(2), 511-517.
https://doi.org/10.1007/BF02546620

Katsikas L, Jeremić KB, Jovanović S, Veličković JS, Popović I. The thermal degradation kinetics of dextran and pullulan. in Journal of Thermal Analysis. 1993;40(2):511-517.
doi:10.1007/BF02546620 .

Katsikas, Lynne, Jeremić, Katarina B., Jovanović, S., Veličković, Jovan S., Popović, Ivanka, "The thermal degradation kinetics of dextran and pullulan" in Journal of Thermal Analysis, 40, no. 2 (1993):511-517,
https://doi.org/10.1007/BF02546620 . .