TY  - JOUR
AU  - Marinović-Cincović, Milena
AU  - Babić, Dragan
AU  - Džunuzović, Enis
AU  - Popov-Pergal, Katarina
AU  - Rančić, Milica
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1133
AB  - Polyimide resins were obtained from the reaction between N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and the following compounds with terminal amino groups: urea, 4-[(4-aminophenyl)sulfonyl] aniline, thiourea, 2-aminoethylamine, and 4.4'-diaminodiphenylmethane. The thermal and thermooxidative behaviour of the polyimide resins was studied by thermogravimetric measurements (TG) in oxygen and nitrogen. Polyimide resins have been irradiated (500 kGy) and their radiation stability evaluated on the basis of thermal and thermooxidative behaviour of irradiated samples. The thermal and oxidative degradation of the examined polyimides is complex and occurs in two phases. The first step occurs in both nitrogen and oxygen but it is somewhat less pronounced in oxygen due to oxidation and formation of more stable products. All samples showed very good radiation stability and there is almost no change in the first degradation step while the span of the peaks in the second step is narrowed and temperatures are slightly lower.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Degradation and Stability
T1  - Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines
EP  - 1736
IS  - 9
SP  - 1730
VL  - 92
DO  - 10.1016/j.polymdegradstab.2007.05.021
ER  - 

@article{
author = "Marinović-Cincović, Milena and Babić, Dragan and Džunuzović, Enis and Popov-Pergal, Katarina and Rančić, Milica",
year = "2007",
abstract = "Polyimide resins were obtained from the reaction between N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and the following compounds with terminal amino groups: urea, 4-[(4-aminophenyl)sulfonyl] aniline, thiourea, 2-aminoethylamine, and 4.4'-diaminodiphenylmethane. The thermal and thermooxidative behaviour of the polyimide resins was studied by thermogravimetric measurements (TG) in oxygen and nitrogen. Polyimide resins have been irradiated (500 kGy) and their radiation stability evaluated on the basis of thermal and thermooxidative behaviour of irradiated samples. The thermal and oxidative degradation of the examined polyimides is complex and occurs in two phases. The first step occurs in both nitrogen and oxygen but it is somewhat less pronounced in oxygen due to oxidation and formation of more stable products. All samples showed very good radiation stability and there is almost no change in the first degradation step while the span of the peaks in the second step is narrowed and temperatures are slightly lower.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Degradation and Stability",
title = "Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines",
pages = "1736-1730",
number = "9",
volume = "92",
doi = "10.1016/j.polymdegradstab.2007.05.021"
}

Marinović-Cincović, M., Babić, D., Džunuzović, E., Popov-Pergal, K.,& Rančić, M.. (2007). Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines. in Polymer Degradation and Stability
Elsevier Sci Ltd, Oxford., 92(9), 1730-1736.
https://doi.org/10.1016/j.polymdegradstab.2007.05.021

Marinović-Cincović M, Babić D, Džunuzović E, Popov-Pergal K, Rančić M. Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines. in Polymer Degradation and Stability. 2007;92(9):1730-1736.
doi:10.1016/j.polymdegradstab.2007.05.021 .

Marinović-Cincović, Milena, Babić, Dragan, Džunuzović, Enis, Popov-Pergal, Katarina, Rančić, Milica, "Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines" in Polymer Degradation and Stability, 92, no. 9 (2007):1730-1736,
https://doi.org/10.1016/j.polymdegradstab.2007.05.021 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Tasić, S
AU  - Božić, B
AU  - Babić, Dragan
AU  - Dunjić, Branko
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/750
AB  - Urethane acrylate resins based on partially modified aliphatic hyperbranched polyesters (HBP) have been synthesized. HBP of the second and the third generation were synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of certain amount of OH end-groups was carried out with soybean fatty acids. The urethane acrylates with different degrees of acrylation have been obtained by reaction of partially modified HBP and different amounts of NCO adduct which had been previously obtained by reaction of equimolar amounts of isophorone diisocyanate and 2-hydroxyethyl acrylate. The synthesized samples were characterized by FT-IR,H-1 and C-13 NMR and GPC. The theological properties of uncured samples and mechanical and thermal properties of UV cured urethane acrylates diluted with 20 wt.% hexanediol diacrylate were examined. The modification of OH end-groups with soybean fatty acids causes a rapid decrease in viscosity of HBP. The examined properties of urethane acrylates depend on the degree of acrylation. After irradiating, the additional cross-linking, which is caused by reaction of double bonds from unsaturated fatty acids, has also important effect on the properties of cured samples.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - UV-curable hyperbranched urethane acrylate oligomers containing soybean fatty acids
EP  - 143
IS  - 2
SP  - 136
VL  - 52
DO  - 10.1016/j.porgcoat.2004.10.003
ER  - 

@article{
author = "Džunuzović, Enis and Tasić, S and Božić, B and Babić, Dragan and Dunjić, Branko",
year = "2005",
abstract = "Urethane acrylate resins based on partially modified aliphatic hyperbranched polyesters (HBP) have been synthesized. HBP of the second and the third generation were synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of certain amount of OH end-groups was carried out with soybean fatty acids. The urethane acrylates with different degrees of acrylation have been obtained by reaction of partially modified HBP and different amounts of NCO adduct which had been previously obtained by reaction of equimolar amounts of isophorone diisocyanate and 2-hydroxyethyl acrylate. The synthesized samples were characterized by FT-IR,H-1 and C-13 NMR and GPC. The theological properties of uncured samples and mechanical and thermal properties of UV cured urethane acrylates diluted with 20 wt.% hexanediol diacrylate were examined. The modification of OH end-groups with soybean fatty acids causes a rapid decrease in viscosity of HBP. The examined properties of urethane acrylates depend on the degree of acrylation. After irradiating, the additional cross-linking, which is caused by reaction of double bonds from unsaturated fatty acids, has also important effect on the properties of cured samples.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "UV-curable hyperbranched urethane acrylate oligomers containing soybean fatty acids",
pages = "143-136",
number = "2",
volume = "52",
doi = "10.1016/j.porgcoat.2004.10.003"
}

Džunuzović, E., Tasić, S., Božić, B., Babić, D.,& Dunjić, B.. (2005). UV-curable hyperbranched urethane acrylate oligomers containing soybean fatty acids. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 52(2), 136-143.
https://doi.org/10.1016/j.porgcoat.2004.10.003

Džunuzović E, Tasić S, Božić B, Babić D, Dunjić B. UV-curable hyperbranched urethane acrylate oligomers containing soybean fatty acids. in Progress in Organic Coatings. 2005;52(2):136-143.
doi:10.1016/j.porgcoat.2004.10.003 .

Džunuzović, Enis, Tasić, S, Božić, B, Babić, Dragan, Dunjić, Branko, "UV-curable hyperbranched urethane acrylate oligomers containing soybean fatty acids" in Progress in Organic Coatings, 52, no. 2 (2005):136-143,
https://doi.org/10.1016/j.porgcoat.2004.10.003 . .

TY  - JOUR
AU  - Nikolic, L
AU  - Skala, Dejan
AU  - Nikolić, Vladimir M.
AU  - Stamenkovic, J
AU  - Babić, Dragan
AU  - Ilic-Stojanovic, S
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5403
AB  - In this work the synthesis of a crosslinked macroporous copolymer was effected from methyl methacrylate and acrylamide. The synthesis process began with emulsion prepolymerization, followed by sol-gel copolymerization until a hard block was obtained. Determination of the properties of the obtained material was carried out by FTIR, mercury porosimetry, and SEM microscopy. The material was characterized by a porous structure with open pores. The macroporous copolymer obtained can be used for polymer-analog reactions and the transformation of amide and ester groups into acyl azide groups. It can be used as a hard inert support for the immobilization of enzymes, or other proteins, by condensation of acyl azide group on poly-mer with the free amino group from the base amino acid of enzyme/protein. For the immobilization of microorganisms it can be used by vacuum diffusion of microorganism suspension into the porous structure, without active group transformation reactions. With microorganisms in the polymer pores, microorganism colonies form within the copolymer by microbial fermentation. (C) 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 387-395, 2004.
T2  - Journal of Applied Polymer Science
T1  - Methyl methacrylate and acrylamide crosslinked macroporous copolymers
EP  - 395
IS  - 1
SP  - 387
VL  - 91
DO  - 10.1002/app.13113
ER  - 

@article{
author = "Nikolic, L and Skala, Dejan and Nikolić, Vladimir M. and Stamenkovic, J and Babić, Dragan and Ilic-Stojanovic, S",
year = "2004",
abstract = "In this work the synthesis of a crosslinked macroporous copolymer was effected from methyl methacrylate and acrylamide. The synthesis process began with emulsion prepolymerization, followed by sol-gel copolymerization until a hard block was obtained. Determination of the properties of the obtained material was carried out by FTIR, mercury porosimetry, and SEM microscopy. The material was characterized by a porous structure with open pores. The macroporous copolymer obtained can be used for polymer-analog reactions and the transformation of amide and ester groups into acyl azide groups. It can be used as a hard inert support for the immobilization of enzymes, or other proteins, by condensation of acyl azide group on poly-mer with the free amino group from the base amino acid of enzyme/protein. For the immobilization of microorganisms it can be used by vacuum diffusion of microorganism suspension into the porous structure, without active group transformation reactions. With microorganisms in the polymer pores, microorganism colonies form within the copolymer by microbial fermentation. (C) 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 387-395, 2004.",
journal = "Journal of Applied Polymer Science",
title = "Methyl methacrylate and acrylamide crosslinked macroporous copolymers",
pages = "395-387",
number = "1",
volume = "91",
doi = "10.1002/app.13113"
}

Nikolic, L., Skala, D., Nikolić, V. M., Stamenkovic, J., Babić, D.,& Ilic-Stojanovic, S.. (2004). Methyl methacrylate and acrylamide crosslinked macroporous copolymers. in Journal of Applied Polymer Science, 91(1), 387-395.
https://doi.org/10.1002/app.13113

Nikolic L, Skala D, Nikolić VM, Stamenkovic J, Babić D, Ilic-Stojanovic S. Methyl methacrylate and acrylamide crosslinked macroporous copolymers. in Journal of Applied Polymer Science. 2004;91(1):387-395.
doi:10.1002/app.13113 .

Nikolic, L, Skala, Dejan, Nikolić, Vladimir M., Stamenkovic, J, Babić, Dragan, Ilic-Stojanovic, S, "Methyl methacrylate and acrylamide crosslinked macroporous copolymers" in Journal of Applied Polymer Science, 91, no. 1 (2004):387-395,
https://doi.org/10.1002/app.13113 . .

TY  - JOUR
AU  - Džunuzović, Enis
AU  - Tasić, S
AU  - Božić, B
AU  - Babić, Dragan
AU  - Dunjić, Branko
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/705
AB  - A series of acrylate functionalized samples based on hyperbranched hydroxy-terminated polyesters with different molecular weights and different degrees of acrylation were synthesized. The obtained urethane acrylates were slightly yellow viscose liquids. Their composition characterized by FTIR and H-1-NMR spectroscopy and their molecular weights were measured by GPC. All the synthesized samples were diluted with 25 wt.% 1.4-butanediol dimethacrylate (BDDM). The rheological properties of the uncured samples and the dynamic mechanical properties of the UV cured samples were examined. All the samples exhibit Newtonian behavior, which indicates the absence of physical entanglements in these polymers. The viscosity increases with increasing number of acrylic groups per molecule. The glass transition temperature of the UV cured samples increases with increasing the number of acrylic groups per molecule. The value of the storage modulus in the rubber-elastic plateau and the cross-link density increase with increasing number of acrylic groups per molecule. The formed networks are inhomogeneous and the residual unsaturation is the highest in the samples with the largest number of acrylic groups per molecule.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Dynamical mechanical analysis of photocrosslinked hyperbranched urethane acrylates
EP  - 453
IS  - 6
SP  - 441
VL  - 69
DO  - 10.2298/JSC0406441D
ER  - 

@article{
author = "Džunuzović, Enis and Tasić, S and Božić, B and Babić, Dragan and Dunjić, Branko",
year = "2004",
abstract = "A series of acrylate functionalized samples based on hyperbranched hydroxy-terminated polyesters with different molecular weights and different degrees of acrylation were synthesized. The obtained urethane acrylates were slightly yellow viscose liquids. Their composition characterized by FTIR and H-1-NMR spectroscopy and their molecular weights were measured by GPC. All the synthesized samples were diluted with 25 wt.% 1.4-butanediol dimethacrylate (BDDM). The rheological properties of the uncured samples and the dynamic mechanical properties of the UV cured samples were examined. All the samples exhibit Newtonian behavior, which indicates the absence of physical entanglements in these polymers. The viscosity increases with increasing number of acrylic groups per molecule. The glass transition temperature of the UV cured samples increases with increasing the number of acrylic groups per molecule. The value of the storage modulus in the rubber-elastic plateau and the cross-link density increase with increasing number of acrylic groups per molecule. The formed networks are inhomogeneous and the residual unsaturation is the highest in the samples with the largest number of acrylic groups per molecule.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Dynamical mechanical analysis of photocrosslinked hyperbranched urethane acrylates",
pages = "453-441",
number = "6",
volume = "69",
doi = "10.2298/JSC0406441D"
}

Džunuzović, E., Tasić, S., Božić, B., Babić, D.,& Dunjić, B.. (2004). Dynamical mechanical analysis of photocrosslinked hyperbranched urethane acrylates. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 69(6), 441-453.
https://doi.org/10.2298/JSC0406441D

Džunuzović E, Tasić S, Božić B, Babić D, Dunjić B. Dynamical mechanical analysis of photocrosslinked hyperbranched urethane acrylates. in Journal of the Serbian Chemical Society. 2004;69(6):441-453.
doi:10.2298/JSC0406441D .

Džunuzović, Enis, Tasić, S, Božić, B, Babić, Dragan, Dunjić, Branko, "Dynamical mechanical analysis of photocrosslinked hyperbranched urethane acrylates" in Journal of the Serbian Chemical Society, 69, no. 6 (2004):441-453,
https://doi.org/10.2298/JSC0406441D . .