TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Džunuzović, Jasna V.
AU  - Džunuzović, Enis S.
AU  - Ranđelović, Danijela V.
PY  - 2024-02
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6993
AB  - The aim of this work was to examine the influence of polycaprolactone (PCL) as a soft segment (SS) on the surface properties of polyurethane networks (PUNs). Five PUNs with different SS content (from 10 to 50 wt%) were prepared using Boltorn® aliphatic hyperbranched polyester of the second pseudo generation and isophorone diisocyanate as components of hard segments. The structure, hydrophobicity, wettability, and swelling behavior of these PUNs were investigated. Primarily, the obtained results showed that properties of prepared PUNs strongly depend on the content of SS that is, PCL. It has been established that the increase of SS content reduced the degree of hydrogen bonding in PUNs. Also, the increase of the SS content in PUNs induced appearance of more pronounced microphase separated morphology, better hydrophobicity and non-wetting with diiodomethane. Simultaneously, the increase of the SS content led to the decrease of contact angles with formamide, and surface free energy of the prepared PUNs. These PUNs show good surface properties that are required for their potential application such as coatings.
PB  - John Wiley and Sons Inc.
T2  - Journal of Applied Polymer Science
T1  - The influence of polycaprolactone content on the surface properties of polyurethane networks
IS  - 8
SP  - e54989
VL  - 141
DO  - 10.1002/app.54989
ER  - 

@article{
author = "Stefanović, Ivan S. and Džunuzović, Jasna V. and Džunuzović, Enis S. and Ranđelović, Danijela V.",
year = "2024-02",
abstract = "The aim of this work was to examine the influence of polycaprolactone (PCL) as a soft segment (SS) on the surface properties of polyurethane networks (PUNs). Five PUNs with different SS content (from 10 to 50 wt%) were prepared using Boltorn® aliphatic hyperbranched polyester of the second pseudo generation and isophorone diisocyanate as components of hard segments. The structure, hydrophobicity, wettability, and swelling behavior of these PUNs were investigated. Primarily, the obtained results showed that properties of prepared PUNs strongly depend on the content of SS that is, PCL. It has been established that the increase of SS content reduced the degree of hydrogen bonding in PUNs. Also, the increase of the SS content in PUNs induced appearance of more pronounced microphase separated morphology, better hydrophobicity and non-wetting with diiodomethane. Simultaneously, the increase of the SS content led to the decrease of contact angles with formamide, and surface free energy of the prepared PUNs. These PUNs show good surface properties that are required for their potential application such as coatings.",
publisher = "John Wiley and Sons Inc.",
journal = "Journal of Applied Polymer Science",
title = "The influence of polycaprolactone content on the surface properties of polyurethane networks",
number = "8",
pages = "e54989",
volume = "141",
doi = "10.1002/app.54989"
}

Stefanović, I. S., Džunuzović, J. V., Džunuzović, E. S.,& Ranđelović, D. V.. (2024-02). The influence of polycaprolactone content on the surface properties of polyurethane networks. in Journal of Applied Polymer Science
John Wiley and Sons Inc.., 141(8), e54989.
https://doi.org/10.1002/app.54989

Stefanović IS, Džunuzović JV, Džunuzović ES, Ranđelović DV. The influence of polycaprolactone content on the surface properties of polyurethane networks. in Journal of Applied Polymer Science. 2024;141(8):e54989.
doi:10.1002/app.54989 .

Stefanović, Ivan S., Džunuzović, Jasna V., Džunuzović, Enis S., Ranđelović, Danijela V., "The influence of polycaprolactone content on the surface properties of polyurethane networks" in Journal of Applied Polymer Science, 141, no. 8 (2024-02):e54989,
https://doi.org/10.1002/app.54989 . .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Džunuzović, Jasna V.
AU  - Džunuzović, Enis S.
AU  - Stevanović, Sanja
AU  - Dapčević, Aleksandra
AU  - Savić, Sanja I.
AU  - Lama, Giuseppe C.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5985
AB  - The influence of soft segment (SS) content on the properties of novel polyurethane networks (PUNs), prepared by a two-step polymerization in a solvent mixture, was investigated in this work. Hyperbranched polyester of the third pseudo generation (BH-30) was used as a crosslinker, and together with isophorone diisocyanate (IPDI) was applied to build hard segments (HS) in PUNs. On the other hand, SS of the prepared PUNs are based on polycaprolactone (PCL). The content of SS in PUNs varied from 10 to 50 wt%. The structural, thermal and mechanical properties, swelling behavior, as well as morphology of PUNs, were explored by various experimental methods. Performed investigations have shown that the use of BH-30 led to the emergence of relatively high crosslinking density and good mechanical properties, and that all features of PUNs significantly depend on the SS content. Higher PCL content caused presence of certain crystallinity, better thermal stability, more pronounced microphase separated morphology, but also lower degree of hydrogen bonding, crosslinking density and storage modulus of the prepared PUNs. The obtained results have shown that the properties of PUNs can be easily varied and customized to different practical needs.
PB  - Elsevier Ltd.
T2  - Materials Today Communications
T1  - The impact of the polycaprolactone content on the properties of polyurethane networks
SP  - 105721
VL  - 35
DO  - 10.1016/j.mtcomm.2023.105721
ER  - 

@article{
author = "Stefanović, Ivan S. and Džunuzović, Jasna V. and Džunuzović, Enis S. and Stevanović, Sanja and Dapčević, Aleksandra and Savić, Sanja I. and Lama, Giuseppe C.",
year = "2023",
abstract = "The influence of soft segment (SS) content on the properties of novel polyurethane networks (PUNs), prepared by a two-step polymerization in a solvent mixture, was investigated in this work. Hyperbranched polyester of the third pseudo generation (BH-30) was used as a crosslinker, and together with isophorone diisocyanate (IPDI) was applied to build hard segments (HS) in PUNs. On the other hand, SS of the prepared PUNs are based on polycaprolactone (PCL). The content of SS in PUNs varied from 10 to 50 wt%. The structural, thermal and mechanical properties, swelling behavior, as well as morphology of PUNs, were explored by various experimental methods. Performed investigations have shown that the use of BH-30 led to the emergence of relatively high crosslinking density and good mechanical properties, and that all features of PUNs significantly depend on the SS content. Higher PCL content caused presence of certain crystallinity, better thermal stability, more pronounced microphase separated morphology, but also lower degree of hydrogen bonding, crosslinking density and storage modulus of the prepared PUNs. The obtained results have shown that the properties of PUNs can be easily varied and customized to different practical needs.",
publisher = "Elsevier Ltd.",
journal = "Materials Today Communications",
title = "The impact of the polycaprolactone content on the properties of polyurethane networks",
pages = "105721",
volume = "35",
doi = "10.1016/j.mtcomm.2023.105721"
}

Stefanović, I. S., Džunuzović, J. V., Džunuzović, E. S., Stevanović, S., Dapčević, A., Savić, S. I.,& Lama, G. C.. (2023). The impact of the polycaprolactone content on the properties of polyurethane networks. in Materials Today Communications
Elsevier Ltd.., 35, 105721.
https://doi.org/10.1016/j.mtcomm.2023.105721

Stefanović IS, Džunuzović JV, Džunuzović ES, Stevanović S, Dapčević A, Savić SI, Lama GC. The impact of the polycaprolactone content on the properties of polyurethane networks. in Materials Today Communications. 2023;35:105721.
doi:10.1016/j.mtcomm.2023.105721 .

Stefanović, Ivan S., Džunuzović, Jasna V., Džunuzović, Enis S., Stevanović, Sanja, Dapčević, Aleksandra, Savić, Sanja I., Lama, Giuseppe C., "The impact of the polycaprolactone content on the properties of polyurethane networks" in Materials Today Communications, 35 (2023):105721,
https://doi.org/10.1016/j.mtcomm.2023.105721 . .

TY  - JOUR
AU  - Pantić, Olga
AU  - Spasojević, Milica
AU  - Džunuzović, Enis
AU  - Nikolić, Marija S.
AU  - Savić, Sanja
AU  - Marković, Maja
AU  - Spasojević, Pavle
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5160
AB  - The scope of the present study was to prepare fully bio-based unsaturated polyester resins (UPRs) with comparable properties to the commercial formulations. The focus was set on the determination of the optimal prepolymer formulation using the same set of diacids (itaconic and succinic acid) and different diols (propylene glycol, isosorbide and neopentyl glycol) or its equimolar mixtures, keeping the fixed molar ratio of 1:1:2.1 in all feed compositions. Instead of commonly used styrene, bio-based dimethyl itaconate was used as a reactive diluent (RD). The rheology of the obtained resins was studied in detail. The effect of the used diol on structural (FTIR), thermal (DSC), thermomechanical (DMA), and mechanical (tensile) properties was explained. The properties of UPRs were found to be highly dependent on the diol used in the prepolymer formulation. The UPR with an equimolar ratio of propylene glycol and neopentyl glycol was shown to be the most promising candidate to compete with the commercial petroleum-based resins.
PB  - MDPI
T2  - Polymers
T1  - The Effect of Glycol Derivatives on the Properties of Bio-Based Unsaturated Polyesters
IS  - 15
SP  - 2970
VL  - 14
DO  - https://doi.org/10.3390/polym14152970
ER  - 

@article{
author = "Pantić, Olga and Spasojević, Milica and Džunuzović, Enis and Nikolić, Marija S. and Savić, Sanja and Marković, Maja and Spasojević, Pavle",
year = "2022",
abstract = "The scope of the present study was to prepare fully bio-based unsaturated polyester resins (UPRs) with comparable properties to the commercial formulations. The focus was set on the determination of the optimal prepolymer formulation using the same set of diacids (itaconic and succinic acid) and different diols (propylene glycol, isosorbide and neopentyl glycol) or its equimolar mixtures, keeping the fixed molar ratio of 1:1:2.1 in all feed compositions. Instead of commonly used styrene, bio-based dimethyl itaconate was used as a reactive diluent (RD). The rheology of the obtained resins was studied in detail. The effect of the used diol on structural (FTIR), thermal (DSC), thermomechanical (DMA), and mechanical (tensile) properties was explained. The properties of UPRs were found to be highly dependent on the diol used in the prepolymer formulation. The UPR with an equimolar ratio of propylene glycol and neopentyl glycol was shown to be the most promising candidate to compete with the commercial petroleum-based resins.",
publisher = "MDPI",
journal = "Polymers",
title = "The Effect of Glycol Derivatives on the Properties of Bio-Based Unsaturated Polyesters",
number = "15",
pages = "2970",
volume = "14",
doi = "https://doi.org/10.3390/polym14152970"
}

Pantić, O., Spasojević, M., Džunuzović, E., Nikolić, M. S., Savić, S., Marković, M.,& Spasojević, P.. (2022). The Effect of Glycol Derivatives on the Properties of Bio-Based Unsaturated Polyesters. in Polymers
MDPI., 14(15), 2970.
https://doi.org/https://doi.org/10.3390/polym14152970

Pantić O, Spasojević M, Džunuzović E, Nikolić MS, Savić S, Marković M, Spasojević P. The Effect of Glycol Derivatives on the Properties of Bio-Based Unsaturated Polyesters. in Polymers. 2022;14(15):2970.
doi:https://doi.org/10.3390/polym14152970 .

Pantić, Olga, Spasojević, Milica, Džunuzović, Enis, Nikolić, Marija S., Savić, Sanja, Marković, Maja, Spasojević, Pavle, "The Effect of Glycol Derivatives on the Properties of Bio-Based Unsaturated Polyesters" in Polymers, 14, no. 15 (2022):2970,
https://doi.org/https://doi.org/10.3390/polym14152970 . .

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

TY  - JOUR
AU  - Gvozdenović, Milica M.
AU  - Jugović, Branimir Z.
AU  - Jokić, Bojan M.
AU  - Džunuzović, Enis S.
AU  - Grgur, Branimir N.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5032
AB  - Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm−2 from aqueous electrolyte of 1.0 mol dm−3 H2SO4 and 0.25 mol dm−3 o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg−1 and specific power up to 3300 W kg−1. Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g−1 indicating the perspective application of POT electrode as energy storage material.
PB  - Elsevier Ltd
T2  - Electrochimica Acta
T1  - Electrochemical synthesis and characterization of poly(o-toluidine) as high energy  storage material
EP  - 752
SP  - 746
VL  - 317
DO  - 10.1016/j.electacta.2019.06.046
ER  - 

@article{
author = "Gvozdenović, Milica M. and Jugović, Branimir Z. and Jokić, Bojan M. and Džunuzović, Enis S. and Grgur, Branimir N.",
year = "2019",
abstract = "Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm−2 from aqueous electrolyte of 1.0 mol dm−3 H2SO4 and 0.25 mol dm−3 o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg−1 and specific power up to 3300 W kg−1. Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g−1 indicating the perspective application of POT electrode as energy storage material.",
publisher = "Elsevier Ltd",
journal = "Electrochimica Acta",
title = "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy  storage material",
pages = "752-746",
volume = "317",
doi = "10.1016/j.electacta.2019.06.046"
}

Gvozdenović, M. M., Jugović, B. Z., Jokić, B. M., Džunuzović, E. S.,& Grgur, B. N.. (2019). Electrochemical synthesis and characterization of poly(o-toluidine) as high energy  storage material. in Electrochimica Acta
Elsevier Ltd., 317, 746-752.
https://doi.org/10.1016/j.electacta.2019.06.046

Gvozdenović MM, Jugović BZ, Jokić BM, Džunuzović ES, Grgur BN. Electrochemical synthesis and characterization of poly(o-toluidine) as high energy  storage material. in Electrochimica Acta. 2019;317:746-752.
doi:10.1016/j.electacta.2019.06.046 .

Gvozdenović, Milica M., Jugović, Branimir Z., Jokić, Bojan M., Džunuzović, Enis S., Grgur, Branimir N., "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy  storage material" in Electrochimica Acta, 317 (2019):746-752,
https://doi.org/10.1016/j.electacta.2019.06.046 . .

TY  - JOUR
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Jokić, Bojan
AU  - Džunuzović, Enis
AU  - Grgur, Branimir
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4064
AB  - Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm(-2) from aqueous electrolyte of 1.0 mol dm(-3) H2SO4 and 0.25 mol dm(-3) o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg(-1) and specific power up to 3300 W kg(-1). Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g(-1) indicating the perspective application of POT electrode as energy storage material.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material
EP  - 752
SP  - 746
VL  - 317
DO  - 10.1016/j.electacta.2019.06.046
ER  - 

@article{
author = "Gvozdenović, Milica and Jugović, Branimir and Jokić, Bojan and Džunuzović, Enis and Grgur, Branimir",
year = "2019",
abstract = "Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm(-2) from aqueous electrolyte of 1.0 mol dm(-3) H2SO4 and 0.25 mol dm(-3) o-toluidine. Electrochemical characterization of POT electrode is performed using cyclic voltammetry, Mot Schottky analysis and galvanostatic measurements at different currents. POT electrode exhibited high energy storage features, with specific energy up to 17.5 Wh kg(-1) and specific power up to 3300 W kg(-1). Cyclic stability exceeding 90% is obtained over 2000 charge/discharge cycles at 13.1 A g(-1) indicating the perspective application of POT electrode as energy storage material.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material",
pages = "752-746",
volume = "317",
doi = "10.1016/j.electacta.2019.06.046"
}

Gvozdenović, M., Jugović, B., Jokić, B., Džunuzović, E.,& Grgur, B.. (2019). Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 317, 746-752.
https://doi.org/10.1016/j.electacta.2019.06.046

Gvozdenović M, Jugović B, Jokić B, Džunuzović E, Grgur B. Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material. in Electrochimica Acta. 2019;317:746-752.
doi:10.1016/j.electacta.2019.06.046 .

Gvozdenović, Milica, Jugović, Branimir, Jokić, Bojan, Džunuzović, Enis, Grgur, Branimir, "Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material" in Electrochimica Acta, 317 (2019):746-752,
https://doi.org/10.1016/j.electacta.2019.06.046 . .

TY  - JOUR
AU  - Barbierikova, Zuzana
AU  - Dvoranova, Dana
AU  - Brezova, Vlasta
AU  - Džunuzović, Enis
AU  - Sredojević, Dušan
AU  - Lazić, Vesna M.
AU  - Nedeljković, Jovan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4243
AB  - The visible-light-responsive inorganic-organic hybrid was prepared by surface modification of commercial TiO2 powder (Degussa P25) with 4-chlorophenol (4-CP). The optical absorption of the hybrid material is red-shifted compared to unmodified TiO2 powder due to the surface charge transfer complex (CTC) formation. The experimental results are supported by the density functional theory (DFT) calculations of the corresponding model cluster. The calculated electronic excitation spectrum is in agreement with the measured reflection spectrum of surface-modified TiO2 powder with 4-CP. The paramagnetic species, generated in the unmodified and surface modified TiO2 powders upon excitation with ultraviolet and visible light, were identified using low-temperature electron paramagnetic resonance (EPR) spectroscopy. The formation of trapped electrons (Ti(III) centers) and the persistent oxygen-centered organic radicals indicated the photoinduced electron transfer from the chemisorbed 4-chlorophenol to the conduction band of TiO2.
PB  - Elsevier, Amsterdam
T2  - Optical Materials
T1  - Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study
EP  - 242
SP  - 237
VL  - 89
DO  - 10.1016/j.optmat.2019.01.027
ER  - 

@article{
author = "Barbierikova, Zuzana and Dvoranova, Dana and Brezova, Vlasta and Džunuzović, Enis and Sredojević, Dušan and Lazić, Vesna M. and Nedeljković, Jovan",
year = "2019",
abstract = "The visible-light-responsive inorganic-organic hybrid was prepared by surface modification of commercial TiO2 powder (Degussa P25) with 4-chlorophenol (4-CP). The optical absorption of the hybrid material is red-shifted compared to unmodified TiO2 powder due to the surface charge transfer complex (CTC) formation. The experimental results are supported by the density functional theory (DFT) calculations of the corresponding model cluster. The calculated electronic excitation spectrum is in agreement with the measured reflection spectrum of surface-modified TiO2 powder with 4-CP. The paramagnetic species, generated in the unmodified and surface modified TiO2 powders upon excitation with ultraviolet and visible light, were identified using low-temperature electron paramagnetic resonance (EPR) spectroscopy. The formation of trapped electrons (Ti(III) centers) and the persistent oxygen-centered organic radicals indicated the photoinduced electron transfer from the chemisorbed 4-chlorophenol to the conduction band of TiO2.",
publisher = "Elsevier, Amsterdam",
journal = "Optical Materials",
title = "Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study",
pages = "242-237",
volume = "89",
doi = "10.1016/j.optmat.2019.01.027"
}

Barbierikova, Z., Dvoranova, D., Brezova, V., Džunuzović, E., Sredojević, D., Lazić, V. M.,& Nedeljković, J.. (2019). Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study. in Optical Materials
Elsevier, Amsterdam., 89, 237-242.
https://doi.org/10.1016/j.optmat.2019.01.027

Barbierikova Z, Dvoranova D, Brezova V, Džunuzović E, Sredojević D, Lazić VM, Nedeljković J. Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study. in Optical Materials. 2019;89:237-242.
doi:10.1016/j.optmat.2019.01.027 .

Barbierikova, Zuzana, Dvoranova, Dana, Brezova, Vlasta, Džunuzović, Enis, Sredojević, Dušan, Lazić, Vesna M., Nedeljković, Jovan, "Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study" in Optical Materials, 89 (2019):237-242,
https://doi.org/10.1016/j.optmat.2019.01.027 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis
AU  - Dimitrijević, Suzana
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4066
AB  - Size-dependent antimicrobial ability of silver nanoparticles (Ag NPs) supported by amino-functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) macroporous copolymer was tested against Gram-negative bacteria Escherichia coli. Inorganic/organic hybrids with distinctly different average sizes of Ag NPs (6.6 and 12.1 nm) were prepared by functionalization of poly(GMA-co-EGDMA) with either 1,8-diaminooctane or ammonia, and consequent reduction of silver ions with amino groups. The transmission electron microscopy (TEM), infrared and UV-Vis reflection spectroscopy, elemental analysis, and inductively coupled plasma atomic emission measurements were used to characterize synthesized hybrid materials. Time- and concentration-dependent antimicrobial performances of prepared samples revealed higher reduction rates of E. coli when hybrid with smaller in size Ag NPs was used. The difference between rates of reduction of E. coli for different size Ag NPs is becoming more pronounced by decrease of the concentration of silver. POLYM. COMPOS., 40:2901-2907, 2019.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Size-dependent antibacterial properties of Ag nanoparticles supported by amino-functionalized poly(GMA-co-EGDMA) polymer
EP  - 2907
IS  - 7
SP  - 2901
VL  - 40
DO  - 10.1002/pc.25120
ER  - 

@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis and Dimitrijević, Suzana and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2019",
abstract = "Size-dependent antimicrobial ability of silver nanoparticles (Ag NPs) supported by amino-functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) macroporous copolymer was tested against Gram-negative bacteria Escherichia coli. Inorganic/organic hybrids with distinctly different average sizes of Ag NPs (6.6 and 12.1 nm) were prepared by functionalization of poly(GMA-co-EGDMA) with either 1,8-diaminooctane or ammonia, and consequent reduction of silver ions with amino groups. The transmission electron microscopy (TEM), infrared and UV-Vis reflection spectroscopy, elemental analysis, and inductively coupled plasma atomic emission measurements were used to characterize synthesized hybrid materials. Time- and concentration-dependent antimicrobial performances of prepared samples revealed higher reduction rates of E. coli when hybrid with smaller in size Ag NPs was used. The difference between rates of reduction of E. coli for different size Ag NPs is becoming more pronounced by decrease of the concentration of silver. POLYM. COMPOS., 40:2901-2907, 2019.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Size-dependent antibacterial properties of Ag nanoparticles supported by amino-functionalized poly(GMA-co-EGDMA) polymer",
pages = "2907-2901",
number = "7",
volume = "40",
doi = "10.1002/pc.25120"
}

Vukoje, I. D., Džunuzović, E., Dimitrijević, S., Ahrenkiel, S. P.,& Nedeljković, J.. (2019). Size-dependent antibacterial properties of Ag nanoparticles supported by amino-functionalized poly(GMA-co-EGDMA) polymer. in Polymer Composites
Wiley, Hoboken., 40(7), 2901-2907.
https://doi.org/10.1002/pc.25120

Vukoje ID, Džunuzović E, Dimitrijević S, Ahrenkiel SP, Nedeljković J. Size-dependent antibacterial properties of Ag nanoparticles supported by amino-functionalized poly(GMA-co-EGDMA) polymer. in Polymer Composites. 2019;40(7):2901-2907.
doi:10.1002/pc.25120 .

Vukoje, Ivana D., Džunuzović, Enis, Dimitrijević, Suzana, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Size-dependent antibacterial properties of Ag nanoparticles supported by amino-functionalized poly(GMA-co-EGDMA) polymer" in Polymer Composites, 40, no. 7 (2019):2901-2907,
https://doi.org/10.1002/pc.25120 . .

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

TY  - JOUR
AU  - Gvozdenović, Milica
AU  - Džunuzović, Enis
AU  - Jugović, Branimir
AU  - Grgur, Branimir
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3825
AB  - Corrosion protection using conventional coatings is the most used method. Application of polyaniline (PANI) as an inhibitor in conventional coating is based on its proven and well examined protective nature, with motivation for replacement of hazardous materials used as inhibitors. Experimental procedures for investigation of the influence of PANI in coatings are focused both on evaluation of physical properties of the coatings studied by FTIR, Raman and UV spectroscopy, thermogravimetric analysis, SEM and TEM microcopies, while the protective nature of the coating, applied at the first place on steel, is studied by accelerated corrosion testing using humidity and salt chamber, electrochemical impedance spectroscopy and polarization measurements upon immersion in corrosion media.
AB  - Primena sistema klasičnih organskih prevlaka za zaštitu metala i legura od korozije je najrasprostranjeniji vid zašte. Primena inhibitora korozije na bazi polianilina (PANI) je zasnovana na njegovom eksperimentalno potvrđenom zaštitnom dejstvu. Osnovni motiv za primenu PANI je zamena ekološki neprihvatljivih materijala koji se korite kao inhibitori. Eksperimentalna istraživanja u ovoj oblsti bazirana su na proučavanju fizičkih svojstava prevlaka primenom spektoskopskih tehnika: FTIR, Ramanske spektroskopije i UV spektroskopije, termogravimetrijske analize, SEM i TEM mikroskopija, dok se ispitivanja zaštitnih svojstava prevlaka na baziraju na ubrzanim korozionim testovima primenom slane i vlažne komore, eksperimentima spektroskopije elektrohemijske impedancije i polarizacionim merenjima.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Polyaniline based corrosion inhibitors for conventional organic coatings
T1  - Primena polianilina kao inhibitora korozije klasičnih organskih prevlaka
EP  - 292
IS  - 2
SP  - 282
VL  - 59
DO  - 10.5937/ZasMat1802282G
ER  - 

@article{
author = "Gvozdenović, Milica and Džunuzović, Enis and Jugović, Branimir and Grgur, Branimir",
year = "2018",
abstract = "Corrosion protection using conventional coatings is the most used method. Application of polyaniline (PANI) as an inhibitor in conventional coating is based on its proven and well examined protective nature, with motivation for replacement of hazardous materials used as inhibitors. Experimental procedures for investigation of the influence of PANI in coatings are focused both on evaluation of physical properties of the coatings studied by FTIR, Raman and UV spectroscopy, thermogravimetric analysis, SEM and TEM microcopies, while the protective nature of the coating, applied at the first place on steel, is studied by accelerated corrosion testing using humidity and salt chamber, electrochemical impedance spectroscopy and polarization measurements upon immersion in corrosion media., Primena sistema klasičnih organskih prevlaka za zaštitu metala i legura od korozije je najrasprostranjeniji vid zašte. Primena inhibitora korozije na bazi polianilina (PANI) je zasnovana na njegovom eksperimentalno potvrđenom zaštitnom dejstvu. Osnovni motiv za primenu PANI je zamena ekološki neprihvatljivih materijala koji se korite kao inhibitori. Eksperimentalna istraživanja u ovoj oblsti bazirana su na proučavanju fizičkih svojstava prevlaka primenom spektoskopskih tehnika: FTIR, Ramanske spektroskopije i UV spektroskopije, termogravimetrijske analize, SEM i TEM mikroskopija, dok se ispitivanja zaštitnih svojstava prevlaka na baziraju na ubrzanim korozionim testovima primenom slane i vlažne komore, eksperimentima spektroskopije elektrohemijske impedancije i polarizacionim merenjima.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Polyaniline based corrosion inhibitors for conventional organic coatings, Primena polianilina kao inhibitora korozije klasičnih organskih prevlaka",
pages = "292-282",
number = "2",
volume = "59",
doi = "10.5937/ZasMat1802282G"
}

Gvozdenović, M., Džunuzović, E., Jugović, B.,& Grgur, B.. (2018). Polyaniline based corrosion inhibitors for conventional organic coatings. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 59(2), 282-292.
https://doi.org/10.5937/ZasMat1802282G

Gvozdenović M, Džunuzović E, Jugović B, Grgur B. Polyaniline based corrosion inhibitors for conventional organic coatings. in Zaštita materijala. 2018;59(2):282-292.
doi:10.5937/ZasMat1802282G .

Gvozdenović, Milica, Džunuzović, Enis, Jugović, Branimir, Grgur, Branimir, "Polyaniline based corrosion inhibitors for conventional organic coatings" in Zaštita materijala, 59, no. 2 (2018):282-292,
https://doi.org/10.5937/ZasMat1802282G . .

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

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

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

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

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

TY  - JOUR
AU  - Sredojević, Dušan
AU  - Kovač, Tijana
AU  - Džunuzović, Enis
AU  - Đorđević, Vesna R.
AU  - Grgur, Branimir
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3537
AB  - The charge transfer complex formation between TiO2 powder and variety of phenol derivatives (phenol, 4-nitrophenol, 4-bromophenol, 4-tert-butylphenol, hydroquinone) was achieved. The red-shift of optical absorption was observed upon surface modification of TiO2 powders with phenol derivatives. The influence of substituent functional groups in para position on the optical band gap and conduction band edge of inorganic/organic hybrids was studied using reflection spectroscopy and cyclic voltammetry. The experimental findings were supported by density functional theory calculations. The measured reflection spectra of surface-modified TiO2 powders with phenol derivatives were compared with calculated electronic excitation spectra of corresponding model systems.
PB  - Elsevier, Amsterdam
T2  - Chemical Physics Letters
T1  - Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study
EP  - 172
SP  - 167
VL  - 686
DO  - 10.1016/j.cplett.2017.08.023
ER  - 

@article{
author = "Sredojević, Dušan and Kovač, Tijana and Džunuzović, Enis and Đorđević, Vesna R. and Grgur, Branimir and Nedeljković, Jovan",
year = "2017",
abstract = "The charge transfer complex formation between TiO2 powder and variety of phenol derivatives (phenol, 4-nitrophenol, 4-bromophenol, 4-tert-butylphenol, hydroquinone) was achieved. The red-shift of optical absorption was observed upon surface modification of TiO2 powders with phenol derivatives. The influence of substituent functional groups in para position on the optical band gap and conduction band edge of inorganic/organic hybrids was studied using reflection spectroscopy and cyclic voltammetry. The experimental findings were supported by density functional theory calculations. The measured reflection spectra of surface-modified TiO2 powders with phenol derivatives were compared with calculated electronic excitation spectra of corresponding model systems.",
publisher = "Elsevier, Amsterdam",
journal = "Chemical Physics Letters",
title = "Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study",
pages = "172-167",
volume = "686",
doi = "10.1016/j.cplett.2017.08.023"
}

Sredojević, D., Kovač, T., Džunuzović, E., Đorđević, V. R., Grgur, B.,& Nedeljković, J.. (2017). Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study. in Chemical Physics Letters
Elsevier, Amsterdam., 686, 167-172.
https://doi.org/10.1016/j.cplett.2017.08.023

Sredojević D, Kovač T, Džunuzović E, Đorđević VR, Grgur B, Nedeljković J. Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study. in Chemical Physics Letters. 2017;686:167-172.
doi:10.1016/j.cplett.2017.08.023 .

Sredojević, Dušan, Kovač, Tijana, Džunuzović, Enis, Đorđević, Vesna R., Grgur, Branimir, Nedeljković, Jovan, "Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study" in Chemical Physics Letters, 686 (2017):167-172,
https://doi.org/10.1016/j.cplett.2017.08.023 . .

TY  - JOUR
AU  - Bogdanović, Gordana
AU  - Kovač, Tijana
AU  - Džunuzović, Enis
AU  - Spirkova, Milena
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3731
AB  - The mechanical properties of nanocomposites obtained by incorporation of fairly uniform hematite nanorods (alpha-Fe2O3 NRs) into epoxy resin were studied as a function of the content of the inorganic phase. A thorough microstructural characterization of the alpha-Fe2O3 NRs and the nanocomposites was performed using transmission electron microscopy (TEM) and atomic force microscopy (AFM). The TEM measurements revealed rod-like morphology of the nanofiller with a uniform size distribution (8.5 nmx170 nm, diameterxlength). High-magnification TEM and AFM measurements indicated agglomeration of alpha-Fe2O3 NRs embedded in the epoxy resin. Stress at break, strain at break, elastic modulus and tensile toughness of the nanocomposites were compared with the data obtained for pure epoxy resin. Significant influence of nanofiller on the mechanical properties of epoxy resin, as well as on the glass transition temperature, could be noticed for samples with low contents of the inorganic phase (up to 1 wt. %).
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Influence of hematite nanorods on the mechanical properties of epoxy resin
EP  - 447
IS  - 4
SP  - 437
VL  - 82
DO  - 10.2298/JSC160707017B
ER  - 

@article{
author = "Bogdanović, Gordana and Kovač, Tijana and Džunuzović, Enis and Spirkova, Milena and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2017",
abstract = "The mechanical properties of nanocomposites obtained by incorporation of fairly uniform hematite nanorods (alpha-Fe2O3 NRs) into epoxy resin were studied as a function of the content of the inorganic phase. A thorough microstructural characterization of the alpha-Fe2O3 NRs and the nanocomposites was performed using transmission electron microscopy (TEM) and atomic force microscopy (AFM). The TEM measurements revealed rod-like morphology of the nanofiller with a uniform size distribution (8.5 nmx170 nm, diameterxlength). High-magnification TEM and AFM measurements indicated agglomeration of alpha-Fe2O3 NRs embedded in the epoxy resin. Stress at break, strain at break, elastic modulus and tensile toughness of the nanocomposites were compared with the data obtained for pure epoxy resin. Significant influence of nanofiller on the mechanical properties of epoxy resin, as well as on the glass transition temperature, could be noticed for samples with low contents of the inorganic phase (up to 1 wt. %).",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of hematite nanorods on the mechanical properties of epoxy resin",
pages = "447-437",
number = "4",
volume = "82",
doi = "10.2298/JSC160707017B"
}

Bogdanović, G., Kovač, T., Džunuzović, E., Spirkova, M., Ahrenkiel, S. P.,& Nedeljković, J.. (2017). Influence of hematite nanorods on the mechanical properties of epoxy resin. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 82(4), 437-447.
https://doi.org/10.2298/JSC160707017B

Bogdanović G, Kovač T, Džunuzović E, Spirkova M, Ahrenkiel SP, Nedeljković J. Influence of hematite nanorods on the mechanical properties of epoxy resin. in Journal of the Serbian Chemical Society. 2017;82(4):437-447.
doi:10.2298/JSC160707017B .

Bogdanović, Gordana, Kovač, Tijana, Džunuzović, Enis, Spirkova, Milena, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Influence of hematite nanorods on the mechanical properties of epoxy resin" in Journal of the Serbian Chemical Society, 82, no. 4 (2017):437-447,
https://doi.org/10.2298/JSC160707017B . .

TY  - JOUR
AU  - Jokić, Bojan
AU  - Džunuzović, Enis
AU  - Grgur, Branimir
AU  - Jugović, Branimir
AU  - Trišović, Tomislav
AU  - Stevanović, Jasmina
AU  - Gvozdenović, Milica
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3579
AB  - Poly(aniline-co-(m-aminobenzoic acid)) was synthesized electrochemically at graphite electrode under galvanostatic conditions. Aqueous electrolyte for synthesis was consisted of HCl and different amount of aniline and m-aminobenzoic acid. The presence of the meta positioned carboxylic group in m-aminobenzoic acid influenced higher co-polymerization potential, different morphology and electrochemical behavior of copolymers compared to polyaniline. Electrochemical activity is achieved by proton exchange in neutral environment that can result in a faster charge/discharge process, which is in the case of PANI limited by slow anion exchange, making this material promising for consideration in super-capacitors and in biological system.
PB  - Springer, Dordrecht
T2  - Journal of Polymer Research
T1  - The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)
IS  - 9
VL  - 24
DO  - 10.1007/s10965-017-1313-5
ER  - 

@article{
author = "Jokić, Bojan and Džunuzović, Enis and Grgur, Branimir and Jugović, Branimir and Trišović, Tomislav and Stevanović, Jasmina and Gvozdenović, Milica",
year = "2017",
abstract = "Poly(aniline-co-(m-aminobenzoic acid)) was synthesized electrochemically at graphite electrode under galvanostatic conditions. Aqueous electrolyte for synthesis was consisted of HCl and different amount of aniline and m-aminobenzoic acid. The presence of the meta positioned carboxylic group in m-aminobenzoic acid influenced higher co-polymerization potential, different morphology and electrochemical behavior of copolymers compared to polyaniline. Electrochemical activity is achieved by proton exchange in neutral environment that can result in a faster charge/discharge process, which is in the case of PANI limited by slow anion exchange, making this material promising for consideration in super-capacitors and in biological system.",
publisher = "Springer, Dordrecht",
journal = "Journal of Polymer Research",
title = "The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)",
number = "9",
volume = "24",
doi = "10.1007/s10965-017-1313-5"
}

Jokić, B., Džunuzović, E., Grgur, B., Jugović, B., Trišović, T., Stevanović, J.,& Gvozdenović, M.. (2017). The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid). in Journal of Polymer Research
Springer, Dordrecht., 24(9).
https://doi.org/10.1007/s10965-017-1313-5

Jokić B, Džunuzović E, Grgur B, Jugović B, Trišović T, Stevanović J, Gvozdenović M. The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid). in Journal of Polymer Research. 2017;24(9).
doi:10.1007/s10965-017-1313-5 .

Jokić, Bojan, Džunuzović, Enis, Grgur, Branimir, Jugović, Branimir, Trišović, Tomislav, Stevanović, Jasmina, Gvozdenović, Milica, "The influence of m-aminobenzoic acid on electrochemical synthesis and behavior of poly(aniline-co-(m-aminobenzoic acid)" in Journal of Polymer Research, 24, no. 9 (2017),
https://doi.org/10.1007/s10965-017-1313-5 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis
AU  - Lončarević, Davor R.
AU  - Dimitrijević, Suzana
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3717
AB  - Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support
EP  - 1214
IS  - 6
SP  - 1206
VL  - 38
DO  - 10.1002/pc.23684
ER  - 

@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis and Lončarević, Davor R. and Dimitrijević, Suzana and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2017",
abstract = "Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support",
pages = "1214-1206",
number = "6",
volume = "38",
doi = "10.1002/pc.23684"
}

Vukoje, I. D., Džunuzović, E., Lončarević, D. R., Dimitrijević, S., Ahrenkiel, S. P.,& Nedeljković, J.. (2017). Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites
Wiley, Hoboken., 38(6), 1206-1214.
https://doi.org/10.1002/pc.23684

Vukoje ID, Džunuzović E, Lončarević DR, Dimitrijević S, Ahrenkiel SP, Nedeljković J. Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites. 2017;38(6):1206-1214.
doi:10.1002/pc.23684 .

Vukoje, Ivana D., Džunuzović, Enis, Lončarević, Davor R., Dimitrijević, Suzana, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support" in Polymer Composites, 38, no. 6 (2017):1206-1214,
https://doi.org/10.1002/pc.23684 . .

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

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

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

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

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

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

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

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

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

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

TY  - JOUR
AU  - Panić, Vesna
AU  - Spasojević, Pavle
AU  - Radoman, Tijana S.
AU  - Džunuzović, Enis
AU  - Popović, Ivanka
AU  - Veličković, Sava
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3009
AB  - The poor stability and tendency to agglomerate of unfunctionalized nano-SiO2 in the presence of ionic species presents a challenge for preparing poly(methacrylic acid)/nano-SiO2 nanocomposite (NC) hydrogels with desired strength and swelling capability. We proposed a facile and eco-friendly method for the preparation of PMAA/SiO2 NC hydrogels using unfunctionalized silica nanoparticles (NPs) in the form of a suspension. SEM and TEM analyses showed that the NP distribution in the polymer matrix highly depended on the particle concentration. At lower concentrations (up to 13.9 wt %), the NPs were uniformly dispersed as single nanoparticles. With an increase in NP concentration, homogeneously dispersed nanoscale aggregates were formed, while a further increase in the silica concentration led to the formation of homogeneous structures consisting of mutually interacting nanosilica particles coated with PMAA. Swelling experiments confirmed that the silica NPs behaved as adhesive fillers that interacted with PMAA chains, causing the formation of a thin polymer layer strongly adsorbed at the particle interface. The thicknesses of the adsorbed polymer layer, as well as the swelling kinetic parameters, were strongly influenced by nanoparticle size and concentration. Combining nanosilica and PMAA in the form of a soft hydrogel network provided stabilization of the NPs and ensured better mechanical properties of the obtained NC hydrogels compared to pure polymer matrix. The optimal loadings, necessary to ensure the most improved dynamical-mechanical properties, were found in the case of the formation of homogeneously dispersed, nanosized silica aggregates in a PMAA matrix.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Physical Chemistry C
T1  - Methacrylic Acid Based Polymer Networks with a High Content of Unfunctionalized Nanosilica: Particle Distribution, Swelling, and Rheological Properties
EP  - 622
IS  - 1
SP  - 610
VL  - 119
DO  - 10.1021/jp5020548
ER  - 

@article{
author = "Panić, Vesna and Spasojević, Pavle and Radoman, Tijana S. and Džunuzović, Enis and Popović, Ivanka and Veličković, Sava",
year = "2015",
abstract = "The poor stability and tendency to agglomerate of unfunctionalized nano-SiO2 in the presence of ionic species presents a challenge for preparing poly(methacrylic acid)/nano-SiO2 nanocomposite (NC) hydrogels with desired strength and swelling capability. We proposed a facile and eco-friendly method for the preparation of PMAA/SiO2 NC hydrogels using unfunctionalized silica nanoparticles (NPs) in the form of a suspension. SEM and TEM analyses showed that the NP distribution in the polymer matrix highly depended on the particle concentration. At lower concentrations (up to 13.9 wt %), the NPs were uniformly dispersed as single nanoparticles. With an increase in NP concentration, homogeneously dispersed nanoscale aggregates were formed, while a further increase in the silica concentration led to the formation of homogeneous structures consisting of mutually interacting nanosilica particles coated with PMAA. Swelling experiments confirmed that the silica NPs behaved as adhesive fillers that interacted with PMAA chains, causing the formation of a thin polymer layer strongly adsorbed at the particle interface. The thicknesses of the adsorbed polymer layer, as well as the swelling kinetic parameters, were strongly influenced by nanoparticle size and concentration. Combining nanosilica and PMAA in the form of a soft hydrogel network provided stabilization of the NPs and ensured better mechanical properties of the obtained NC hydrogels compared to pure polymer matrix. The optimal loadings, necessary to ensure the most improved dynamical-mechanical properties, were found in the case of the formation of homogeneously dispersed, nanosized silica aggregates in a PMAA matrix.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Physical Chemistry C",
title = "Methacrylic Acid Based Polymer Networks with a High Content of Unfunctionalized Nanosilica: Particle Distribution, Swelling, and Rheological Properties",
pages = "622-610",
number = "1",
volume = "119",
doi = "10.1021/jp5020548"
}

Panić, V., Spasojević, P., Radoman, T. S., Džunuzović, E., Popović, I.,& Veličković, S.. (2015). Methacrylic Acid Based Polymer Networks with a High Content of Unfunctionalized Nanosilica: Particle Distribution, Swelling, and Rheological Properties. in Journal of Physical Chemistry C
Amer Chemical Soc, Washington., 119(1), 610-622.
https://doi.org/10.1021/jp5020548

Panić V, Spasojević P, Radoman TS, Džunuzović E, Popović I, Veličković S. Methacrylic Acid Based Polymer Networks with a High Content of Unfunctionalized Nanosilica: Particle Distribution, Swelling, and Rheological Properties. in Journal of Physical Chemistry C. 2015;119(1):610-622.
doi:10.1021/jp5020548 .

Panić, Vesna, Spasojević, Pavle, Radoman, Tijana S., Džunuzović, Enis, Popović, Ivanka, Veličković, Sava, "Methacrylic Acid Based Polymer Networks with a High Content of Unfunctionalized Nanosilica: Particle Distribution, Swelling, and Rheological Properties" in Journal of Physical Chemistry C, 119, no. 1 (2015):610-622,
https://doi.org/10.1021/jp5020548 . .

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

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

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

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

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

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

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

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

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

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