Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, alpha,omega-dihydroxy(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4'-methylenediphenyl diisocyanate were synthesized using a two-step polymerization reaction in solution. The influence of the pseudogeneration number of Boltorn HBPs on the thermomechanical and thermal properties and morphologies of polyurethane networks was investigated using FTIR, DMTA, TGA, hardness measurements, SEM, and SAXS. Synthesized polyurethanes showed higher cross-linking density and hardness and lower thermal stability with increasing pseudogeneration number of HBP. Samples with lower EO-PDMS-EO content exhibited slightly better thermal stability and higher hardness. All utilized characterization methods yielded consistent results and confirmed the existence of microphase separated morphology with the appearance of certain microphase mixing between segments as t...he pseudogeneration number of HBP increased. The obtained results revealed that the synthesized polyurethanes have good thermal and thermomechanical properties, which can be tailored by changing the pseudogeneration number of the HBP or the EO-PDMS-EO content.
Source:
Industrial and Engineering Chemistry Research, 2012, 51, 33, 10824-10832
TY - JOUR
AU - Džunuzović, Jasna
AU - Pergal, Marija
AU - Poreba, Rafal
AU - Ostojić, Sanja
AU - Lazić, Nada
AU - Spirkova, Milena
AU - Jovanovic, Slobodan
PY - 2012
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5740
AB - Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, alpha,omega-dihydroxy(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4'-methylenediphenyl diisocyanate were synthesized using a two-step polymerization reaction in solution. The influence of the pseudogeneration number of Boltorn HBPs on the thermomechanical and thermal properties and morphologies of polyurethane networks was investigated using FTIR, DMTA, TGA, hardness measurements, SEM, and SAXS. Synthesized polyurethanes showed higher cross-linking density and hardness and lower thermal stability with increasing pseudogeneration number of HBP. Samples with lower EO-PDMS-EO content exhibited slightly better thermal stability and higher hardness. All utilized characterization methods yielded consistent results and confirmed the existence of microphase separated morphology with the appearance of certain microphase mixing between segments as the pseudogeneration number of HBP increased. The obtained results revealed that the synthesized polyurethanes have good thermal and thermomechanical properties, which can be tailored by changing the pseudogeneration number of the HBP or the EO-PDMS-EO content.
PB - American Chemical Society (ACS)
T2 - Industrial and Engineering Chemistry Research
T1 - Studies of the Thermal and Mechanical Properties of Poly(urethane-siloxane)s Cross-Linked by Hyperbranched Polyesters
EP - 10832
IS - 33
SP - 10824
VL - 51
DO - 10.1021/ie300927z
ER -
@article{
author = "Džunuzović, Jasna and Pergal, Marija and Poreba, Rafal and Ostojić, Sanja and Lazić, Nada and Spirkova, Milena and Jovanovic, Slobodan",
year = "2012",
abstract = "Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, alpha,omega-dihydroxy(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4'-methylenediphenyl diisocyanate were synthesized using a two-step polymerization reaction in solution. The influence of the pseudogeneration number of Boltorn HBPs on the thermomechanical and thermal properties and morphologies of polyurethane networks was investigated using FTIR, DMTA, TGA, hardness measurements, SEM, and SAXS. Synthesized polyurethanes showed higher cross-linking density and hardness and lower thermal stability with increasing pseudogeneration number of HBP. Samples with lower EO-PDMS-EO content exhibited slightly better thermal stability and higher hardness. All utilized characterization methods yielded consistent results and confirmed the existence of microphase separated morphology with the appearance of certain microphase mixing between segments as the pseudogeneration number of HBP increased. The obtained results revealed that the synthesized polyurethanes have good thermal and thermomechanical properties, which can be tailored by changing the pseudogeneration number of the HBP or the EO-PDMS-EO content.",
publisher = "American Chemical Society (ACS)",
journal = "Industrial and Engineering Chemistry Research",
title = "Studies of the Thermal and Mechanical Properties of Poly(urethane-siloxane)s Cross-Linked by Hyperbranched Polyesters",
pages = "10832-10824",
number = "33",
volume = "51",
doi = "10.1021/ie300927z"
}
Džunuzović, J., Pergal, M., Poreba, R., Ostojić, S., Lazić, N., Spirkova, M.,& Jovanovic, S.. (2012). Studies of the Thermal and Mechanical Properties of Poly(urethane-siloxane)s Cross-Linked by Hyperbranched Polyesters. in Industrial and Engineering Chemistry Research
American Chemical Society (ACS)., 51(33), 10824-10832.
https://doi.org/10.1021/ie300927z
Džunuzović J, Pergal M, Poreba R, Ostojić S, Lazić N, Spirkova M, Jovanovic S. Studies of the Thermal and Mechanical Properties of Poly(urethane-siloxane)s Cross-Linked by Hyperbranched Polyesters. in Industrial and Engineering Chemistry Research. 2012;51(33):10824-10832.
doi:10.1021/ie300927z .
Džunuzović, Jasna, Pergal, Marija, Poreba, Rafal, Ostojić, Sanja, Lazić, Nada, Spirkova, Milena, Jovanovic, Slobodan, "Studies of the Thermal and Mechanical Properties of Poly(urethane-siloxane)s Cross-Linked by Hyperbranched Polyesters" in Industrial and Engineering Chemistry Research, 51, no. 33 (2012):10824-10832,
https://doi.org/10.1021/ie300927z . .
