TY  - JOUR
AU  - Bogdanović, Gordana
AU  - Kovač, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Spirkova, Milena
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1625
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. %).
T2  - Journal of the Serbian Chemical Society
T1  - Influence of hematite nanorods on the mechanical properties of epoxy resin
VL  - 82
IS  - 4
SP  - 437
EP  - 447
DO  - 10.2298/JSC160707017B
ER  - 

@article{
author = "Bogdanović, Gordana and Kovač, Tijana S. and Džunuzović, Enis S. 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. %).",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of hematite nanorods on the mechanical properties of epoxy resin",
volume = "82",
number = "4",
pages = "437-447",
doi = "10.2298/JSC160707017B"
}

Bogdanović, G., Kovač, T. S., Džunuzović, E. S., 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, 82(4), 437-447.
https://doi.org/10.2298/JSC160707017B

Bogdanović G, Kovač TS, Džunuzović ES, 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 S., Džunuzović, Enis S., 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  - Cakić, Suzana M.
AU  - Spirkova, Milena
AU  - Ristić, Ivan S.
AU  - Budinski-Simendić, Jaroslava K.
AU  - Marinović-Cincović, Milena
AU  - Poreba, Rafal
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5364
AB  - Three water-based polyurethane dispersions (PUD) were synthesized by modified dispersing procedure using polycarbonate diol (PCD), isophorone diisocyanate (IPDI), dimethylolpropionic acid (DMPA), triethylamine (TEA) and ethylenediamine (EDA). The ionic group content in the polyurethane-ionomer structure was varied by changing the amount of the internal emulsifier, DMPA (4.5, 7.5 and 10 wt.% to the prepolymer weight). The expected structures of obtained materials were confirmed by FTIR spectroscopy. The effect of the DMPA content on the thermal properties of polyurethane films was measured by TGA, DTA, DSC and DMTA methods. Increased DMPA amounts result in the higher hard segment contents and in the increase of the weight loss corresponding to the degradation of the hard segments. The reduction of hard segment content led to the elevated temperature of decomposition and to the decrease of the glass transition temperature and thermoplasticity. The atomic force microscopy (AFM), results indicated that phase separation between hard and soft segment of PUD with higher DMPA content is more significant than of PUD with lower DMPA content. The physico-mechanical properties, such as hardness, adhesion test and gloss of the dried films were also determined considering the effect of DMPA content on coating properties. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content
VL  - 138
IS  - 1
SP  - 277
EP  - 285
DO  - 10.1016/j.matchemphys.2012.11.057
ER  - 

@article{
author = "Cakić, Suzana M. and Spirkova, Milena and Ristić, Ivan S. and Budinski-Simendić, Jaroslava K. and Marinović-Cincović, Milena and Poreba, Rafal",
year = "2013",
abstract = "Three water-based polyurethane dispersions (PUD) were synthesized by modified dispersing procedure using polycarbonate diol (PCD), isophorone diisocyanate (IPDI), dimethylolpropionic acid (DMPA), triethylamine (TEA) and ethylenediamine (EDA). The ionic group content in the polyurethane-ionomer structure was varied by changing the amount of the internal emulsifier, DMPA (4.5, 7.5 and 10 wt.% to the prepolymer weight). The expected structures of obtained materials were confirmed by FTIR spectroscopy. The effect of the DMPA content on the thermal properties of polyurethane films was measured by TGA, DTA, DSC and DMTA methods. Increased DMPA amounts result in the higher hard segment contents and in the increase of the weight loss corresponding to the degradation of the hard segments. The reduction of hard segment content led to the elevated temperature of decomposition and to the decrease of the glass transition temperature and thermoplasticity. The atomic force microscopy (AFM), results indicated that phase separation between hard and soft segment of PUD with higher DMPA content is more significant than of PUD with lower DMPA content. The physico-mechanical properties, such as hardness, adhesion test and gloss of the dried films were also determined considering the effect of DMPA content on coating properties. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content",
volume = "138",
number = "1",
pages = "277-285",
doi = "10.1016/j.matchemphys.2012.11.057"
}

Cakić, S. M., Spirkova, M., Ristić, I. S., Budinski-Simendić, J. K., Marinović-Cincović, M.,& Poreba, R.. (2013). The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content. in Materials Chemistry and Physics, 138(1), 277-285.
https://doi.org/10.1016/j.matchemphys.2012.11.057

Cakić SM, Spirkova M, Ristić IS, Budinski-Simendić JK, Marinović-Cincović M, Poreba R. The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content. in Materials Chemistry and Physics. 2013;138(1):277-285.
doi:10.1016/j.matchemphys.2012.11.057 .

Cakić, Suzana M., Spirkova, Milena, Ristić, Ivan S., Budinski-Simendić, Jaroslava K., Marinović-Cincović, Milena, Poreba, Rafal, "The waterborne polyurethane dispersions based on polycarbonate diol: Effect of ionic content" in Materials Chemistry and Physics, 138, no. 1 (2013):277-285,
https://doi.org/10.1016/j.matchemphys.2012.11.057 . .

TY  - JOUR
AU  - Cakić, Suzana M.
AU  - Ristić, Ivan S.
AU  - Marinović-Cincović, Milena
AU  - Spirkova, Milena
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5343
AB  - Polyurethane anionic adhesives were synthesized as waterborne polyurethane dispersions (PUDs) by modified dispersing procedure, using isophorone diisocyanate, dimethylol propionic acid, ethylenediamine as a chain extender and a range of soft segments with various macrodiols proportions. The soft segment was formed by replacing poly(propylene glycol) (PPG) as polyether polyol with polycarbonate diol (PCD), as polyester polyol. The effect of the macrodiols proportions of soft segment on the thermal properties of polyurethane films was measured by thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) methods. The infrared spectroscopy (FTIR) was used for evaluating the degree of phase separation. The results showed that phase separation between hard and soft segments of poly(ester-urethane) is more significant than of poly(ether-urethane). The phase separation degree of polyurethane dispersion significantly affected the glass transition temperature (T-g) and film properties. While the phase separation degree increased, T-g proportionally decreased, but the hardness and gloss of the dried films increased, as expected. However, thermal stability was influenced by the molecular weight of used polyols and chemical structure of the polyols, and it was described by the effect of oxygen content, and interaction between the soft and hard segment, and the soft segment composition. The soft segment can be achieved with a proper selection, in order to fine-tune the performance of waterborne polyurethane dispersion, considering certain practical application. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - International Journal of Adhesion and Adhesives
T1  - The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives
VL  - 41
SP  - 132
EP  - 139
DO  - 10.1016/j.ijadhadh.2012.11.001
ER  - 

@article{
author = "Cakić, Suzana M. and Ristić, Ivan S. and Marinović-Cincović, Milena and Spirkova, Milena",
year = "2013",
abstract = "Polyurethane anionic adhesives were synthesized as waterborne polyurethane dispersions (PUDs) by modified dispersing procedure, using isophorone diisocyanate, dimethylol propionic acid, ethylenediamine as a chain extender and a range of soft segments with various macrodiols proportions. The soft segment was formed by replacing poly(propylene glycol) (PPG) as polyether polyol with polycarbonate diol (PCD), as polyester polyol. The effect of the macrodiols proportions of soft segment on the thermal properties of polyurethane films was measured by thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) methods. The infrared spectroscopy (FTIR) was used for evaluating the degree of phase separation. The results showed that phase separation between hard and soft segments of poly(ester-urethane) is more significant than of poly(ether-urethane). The phase separation degree of polyurethane dispersion significantly affected the glass transition temperature (T-g) and film properties. While the phase separation degree increased, T-g proportionally decreased, but the hardness and gloss of the dried films increased, as expected. However, thermal stability was influenced by the molecular weight of used polyols and chemical structure of the polyols, and it was described by the effect of oxygen content, and interaction between the soft and hard segment, and the soft segment composition. The soft segment can be achieved with a proper selection, in order to fine-tune the performance of waterborne polyurethane dispersion, considering certain practical application. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Adhesion and Adhesives",
title = "The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives",
volume = "41",
pages = "132-139",
doi = "10.1016/j.ijadhadh.2012.11.001"
}

Cakić, S. M., Ristić, I. S., Marinović-Cincović, M.,& Spirkova, M.. (2013). The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives. in International Journal of Adhesion and Adhesives, 41, 132-139.
https://doi.org/10.1016/j.ijadhadh.2012.11.001

Cakić SM, Ristić IS, Marinović-Cincović M, Spirkova M. The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives. in International Journal of Adhesion and Adhesives. 2013;41:132-139.
doi:10.1016/j.ijadhadh.2012.11.001 .

Cakić, Suzana M., Ristić, Ivan S., Marinović-Cincović, Milena, Spirkova, Milena, "The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives" in International Journal of Adhesion and Adhesives, 41 (2013):132-139,
https://doi.org/10.1016/j.ijadhadh.2012.11.001 . .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Džunuzović, Jasna V.
AU  - Poreba, Rafal
AU  - Steinhart, Milos
AU  - Pergal, Miodrag M.
AU  - Vodnik, Vesna
AU  - Spirkova, Milena
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5508
AB  - Novel poly(urethane-ester-siloxane) networks, based on hydroxypropyl terminated poly(dimethylsiloxane) (PDMS), 4,4-methylenediphenyl diisocyanate, and hyperbranched polyesters (HBPs) of the second and third pseudogenerations, were synthesized by two-step polymerization. The effects of the PDMS content and pseudogeneration number of HBPs on the structural, thermomechanical, thermal, and surface properties of polyurethanes were investigated. Thermomechanical and thermal properties of polyurethanes and FTIR, SAXS, and SEM results indicated good microphase separated structure. SAXS data suggested that the difference in the HBP pseudogeneration number affects only the global properties of the structure and is much less pronounced than the dependence on the PDMS content, while local properties depend only on the PDMS content. Surface characterization of samples indicated the slightly amphiphilic nature of polyurethanes. The results revealed that the synthesized polyurethanes have good thermal, thermomechanical, and surface properties, which can be tuned and adjusted for coating application by changing the PDMS content or type of the HBP.
T2  - Industrial and Engineering Chemistry Research
T1  - Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks
VL  - 52
IS  - 18
SP  - 6164
EP  - 6176
DO  - 10.1021/ie400467j
ER  - 

@article{
author = "Pergal, Marija V. and Džunuzović, Jasna V. and Poreba, Rafal and Steinhart, Milos and Pergal, Miodrag M. and Vodnik, Vesna and Spirkova, Milena",
year = "2013",
abstract = "Novel poly(urethane-ester-siloxane) networks, based on hydroxypropyl terminated poly(dimethylsiloxane) (PDMS), 4,4-methylenediphenyl diisocyanate, and hyperbranched polyesters (HBPs) of the second and third pseudogenerations, were synthesized by two-step polymerization. The effects of the PDMS content and pseudogeneration number of HBPs on the structural, thermomechanical, thermal, and surface properties of polyurethanes were investigated. Thermomechanical and thermal properties of polyurethanes and FTIR, SAXS, and SEM results indicated good microphase separated structure. SAXS data suggested that the difference in the HBP pseudogeneration number affects only the global properties of the structure and is much less pronounced than the dependence on the PDMS content, while local properties depend only on the PDMS content. Surface characterization of samples indicated the slightly amphiphilic nature of polyurethanes. The results revealed that the synthesized polyurethanes have good thermal, thermomechanical, and surface properties, which can be tuned and adjusted for coating application by changing the PDMS content or type of the HBP.",
journal = "Industrial and Engineering Chemistry Research",
title = "Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks",
volume = "52",
number = "18",
pages = "6164-6176",
doi = "10.1021/ie400467j"
}

Pergal, M. V., Džunuzović, J. V., Poreba, R., Steinhart, M., Pergal, M. M., Vodnik, V.,& Spirkova, M.. (2013). Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks. in Industrial and Engineering Chemistry Research, 52(18), 6164-6176.
https://doi.org/10.1021/ie400467j

Pergal MV, Džunuzović JV, Poreba R, Steinhart M, Pergal MM, Vodnik V, Spirkova M. Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks. in Industrial and Engineering Chemistry Research. 2013;52(18):6164-6176.
doi:10.1021/ie400467j .

Pergal, Marija V., Džunuzović, Jasna V., Poreba, Rafal, Steinhart, Milos, Pergal, Miodrag M., Vodnik, Vesna, Spirkova, Milena, "Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks" in Industrial and Engineering Chemistry Research, 52, no. 18 (2013):6164-6176,
https://doi.org/10.1021/ie400467j . .

TY  - JOUR
AU  - Džunuzović, Jasna V.
AU  - Pergal, Marija V.
AU  - Vodnik, Vesna
AU  - Spirkova, Milena
AU  - Poreba, Rafal
AU  - Jovanovic, Slobodan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5338
AB  - INVESTIGATION OF THE MORPHOLOGY AND SURFACE PROPERTIES OF CROSSLINKED POLY(URETHANE-ESTER-SILOXANE)S Jasna V. Dzunuzovic(1), Marija V. Pergal(1), Vesna V. Vodnik(2), Milena Spirkova(3), Rafal Poreba(3), Slobodan Jovanovic(4) (1)University of Belgrade, Institute of Chemistry, Technology and Metallurgy (ICTM) Center of Chemistry, Belgrade, Serbia (2)University of Belgrade, Institute of Nuclear Science Vinca, Belgrade, Serbia (3)Institute of Macromolecular Chemistry AS CR, v.v.i., Nanostructured Polymers and Composites Department, Praha, Czech Republic (4)University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia (Scientific paper) Two series of crosslinked poly(urethane-ester-siloxane)s were synthesized from alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4-methylenediphenyl diisocyanate and Boltorn (R) hyperbranched polyesters of the second and third pseudo generation, by two-step polymerization in solution. The effect of the EO-PDMS-EO content and functionality of the applied crosslinking agent on the morphology and surface properties of the prepared poly(urethane-ester-siloxane)s was investigated by FTIR spectroscopy, small-angle X-ray scattering (SAXS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water absorption measurement. Different techniques (FTIR peak deconvolution, SAXS and AFM) revealed that decrease of the crosslinking agent functionality and EO-PDMS-EO content promotes microphase separation in the synthesized poly(urethane-ester-siloxane)s. SEM analysis and water absorption experiments showed that, due to the hydrophobic character of EO-PDMS-EO and its ability to migrate to the surface of poly(urethane-ester-siloxane)s, samples synthesized with higher EO-PDMS-EO content and crosslinking agents of lower functionality had more hydrophobic surfaces and better waterproof performances. The obtained results indicate that the synthesis of poly(urethane-ester-siloxane)s based on EO-PDMS-EO and Boltorn (R) hyperbranched polyesters leads to the creation of networks with interesting morphological and surface properties, which can be easily tailored by changing the content of EO-PDMS-EO segment or functionality of hyperbranched polyester.
T2  - Hemijska industrija
T1  - Investigation of the Morphology and Surface Properties of Crosslinked Poly(Urethane-Ester-Siloxane)S
VL  - 66
IS  - 6
SP  - 813
EP  - 821
DO  - 10.2298/HEMIND121004101D
ER  - 

@article{
author = "Džunuzović, Jasna V. and Pergal, Marija V. and Vodnik, Vesna and Spirkova, Milena and Poreba, Rafal and Jovanovic, Slobodan",
year = "2012",
abstract = "INVESTIGATION OF THE MORPHOLOGY AND SURFACE PROPERTIES OF CROSSLINKED POLY(URETHANE-ESTER-SILOXANE)S Jasna V. Dzunuzovic(1), Marija V. Pergal(1), Vesna V. Vodnik(2), Milena Spirkova(3), Rafal Poreba(3), Slobodan Jovanovic(4) (1)University of Belgrade, Institute of Chemistry, Technology and Metallurgy (ICTM) Center of Chemistry, Belgrade, Serbia (2)University of Belgrade, Institute of Nuclear Science Vinca, Belgrade, Serbia (3)Institute of Macromolecular Chemistry AS CR, v.v.i., Nanostructured Polymers and Composites Department, Praha, Czech Republic (4)University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia (Scientific paper) Two series of crosslinked poly(urethane-ester-siloxane)s were synthesized from alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4-methylenediphenyl diisocyanate and Boltorn (R) hyperbranched polyesters of the second and third pseudo generation, by two-step polymerization in solution. The effect of the EO-PDMS-EO content and functionality of the applied crosslinking agent on the morphology and surface properties of the prepared poly(urethane-ester-siloxane)s was investigated by FTIR spectroscopy, small-angle X-ray scattering (SAXS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water absorption measurement. Different techniques (FTIR peak deconvolution, SAXS and AFM) revealed that decrease of the crosslinking agent functionality and EO-PDMS-EO content promotes microphase separation in the synthesized poly(urethane-ester-siloxane)s. SEM analysis and water absorption experiments showed that, due to the hydrophobic character of EO-PDMS-EO and its ability to migrate to the surface of poly(urethane-ester-siloxane)s, samples synthesized with higher EO-PDMS-EO content and crosslinking agents of lower functionality had more hydrophobic surfaces and better waterproof performances. The obtained results indicate that the synthesis of poly(urethane-ester-siloxane)s based on EO-PDMS-EO and Boltorn (R) hyperbranched polyesters leads to the creation of networks with interesting morphological and surface properties, which can be easily tailored by changing the content of EO-PDMS-EO segment or functionality of hyperbranched polyester.",
journal = "Hemijska industrija",
title = "Investigation of the Morphology and Surface Properties of Crosslinked Poly(Urethane-Ester-Siloxane)S",
volume = "66",
number = "6",
pages = "813-821",
doi = "10.2298/HEMIND121004101D"
}

Džunuzović, J. V., Pergal, M. V., Vodnik, V., Spirkova, M., Poreba, R.,& Jovanovic, S.. (2012). Investigation of the Morphology and Surface Properties of Crosslinked Poly(Urethane-Ester-Siloxane)S. in Hemijska industrija, 66(6), 813-821.
https://doi.org/10.2298/HEMIND121004101D

Džunuzović JV, Pergal MV, Vodnik V, Spirkova M, Poreba R, Jovanovic S. Investigation of the Morphology and Surface Properties of Crosslinked Poly(Urethane-Ester-Siloxane)S. in Hemijska industrija. 2012;66(6):813-821.
doi:10.2298/HEMIND121004101D .

Džunuzović, Jasna V., Pergal, Marija V., Vodnik, Vesna, Spirkova, Milena, Poreba, Rafal, Jovanovic, Slobodan, "Investigation of the Morphology and Surface Properties of Crosslinked Poly(Urethane-Ester-Siloxane)S" in Hemijska industrija, 66, no. 6 (2012):813-821,
https://doi.org/10.2298/HEMIND121004101D . .

TY  - JOUR
AU  - Džunuzović, Jasna V.
AU  - Pergal, Marija V.
AU  - Poreba, Rafal
AU  - Vodnik, Vesna
AU  - Simonović, Branislav R.
AU  - Spirkova, Milena
AU  - Jovanovic, Slobodan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5229
AB  - Six polyurethane networks were synthesized from Boltorn (R) hyperbranched polyester of the second pseudo generation, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4-methylenediphenyl diisocyanate. The effect of the EO-PDMS-EO content on the properties of prepared polyurethanes was investigated by dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), swelling measurements, water contact angle and water absorption. Different techniques (FTIR peak deconvolution, DMTA and SEM) revealed that decrease of EO-PDMS-EO content promotes microphase separation in the synthesized polyurethanes. Samples synthesized with higher EO-PDMS-EO content have more hydrophobic surface and better waterproof performances, but lower crosslinking density. TGA results suggest that thermal stability of the synthesized polyurethane networks in nitrogen is significantly affected by the mutual influence of the crosslinking density and EO-PDMS-EO content. The results obtained in this work indicate that the synthesis of polyurethanes based on hyperbranched polyester and EO-PDMS-EO leads to the creation of networks with good thermal, thermomechanical and surface properties. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Non-crystalline Solids
T1  - Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester
VL  - 358
IS  - 23
SP  - 3161
EP  - 3169
DO  - 10.1016/j.jnoncrysol.2012.09.013
ER  - 

@article{
author = "Džunuzović, Jasna V. and Pergal, Marija V. and Poreba, Rafal and Vodnik, Vesna and Simonović, Branislav R. and Spirkova, Milena and Jovanovic, Slobodan",
year = "2012",
abstract = "Six polyurethane networks were synthesized from Boltorn (R) hyperbranched polyester of the second pseudo generation, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4-methylenediphenyl diisocyanate. The effect of the EO-PDMS-EO content on the properties of prepared polyurethanes was investigated by dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), swelling measurements, water contact angle and water absorption. Different techniques (FTIR peak deconvolution, DMTA and SEM) revealed that decrease of EO-PDMS-EO content promotes microphase separation in the synthesized polyurethanes. Samples synthesized with higher EO-PDMS-EO content have more hydrophobic surface and better waterproof performances, but lower crosslinking density. TGA results suggest that thermal stability of the synthesized polyurethane networks in nitrogen is significantly affected by the mutual influence of the crosslinking density and EO-PDMS-EO content. The results obtained in this work indicate that the synthesis of polyurethanes based on hyperbranched polyester and EO-PDMS-EO leads to the creation of networks with good thermal, thermomechanical and surface properties. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Non-crystalline Solids",
title = "Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester",
volume = "358",
number = "23",
pages = "3161-3169",
doi = "10.1016/j.jnoncrysol.2012.09.013"
}

Džunuzović, J. V., Pergal, M. V., Poreba, R., Vodnik, V., Simonović, B. R., Spirkova, M.,& Jovanovic, S.. (2012). Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester. in Journal of Non-crystalline Solids, 358(23), 3161-3169.
https://doi.org/10.1016/j.jnoncrysol.2012.09.013

Džunuzović JV, Pergal MV, Poreba R, Vodnik V, Simonović BR, Spirkova M, Jovanovic S. Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester. in Journal of Non-crystalline Solids. 2012;358(23):3161-3169.
doi:10.1016/j.jnoncrysol.2012.09.013 .

Džunuzović, Jasna V., Pergal, Marija V., Poreba, Rafal, Vodnik, Vesna, Simonović, Branislav R., Spirkova, Milena, Jovanovic, Slobodan, "Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester" in Journal of Non-crystalline Solids, 358, no. 23 (2012):3161-3169,
https://doi.org/10.1016/j.jnoncrysol.2012.09.013 . .