Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4'-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65A degrees C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. Thi...s was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.
TY - JOUR
AU - Pergal, Marija
AU - Džunuzović, Jasna
AU - Kicanovic, M.
AU - Vodnik, Vesna
AU - Pergal, Miodrag M.
AU - Jovanovic, S.
PY - 2011
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5663
AB - Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4'-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65A degrees C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. This was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.
PB - Maik Nauka/Interperiodica/Springer, New York
T2 - Russian Journal of Physical Chemistry A
T1 - Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester
EP - 2256
IS - 13
SP - 2251
VL - 85
DO - 10.1134/S0036024411130243
ER -
@article{
author = "Pergal, Marija and Džunuzović, Jasna and Kicanovic, M. and Vodnik, Vesna and Pergal, Miodrag M. and Jovanovic, S.",
year = "2011",
abstract = "Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4'-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65A degrees C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. This was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "Russian Journal of Physical Chemistry A",
title = "Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester",
pages = "2256-2251",
number = "13",
volume = "85",
doi = "10.1134/S0036024411130243"
}
Pergal, M., Džunuzović, J., Kicanovic, M., Vodnik, V., Pergal, M. M.,& Jovanovic, S.. (2011). Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester. in Russian Journal of Physical Chemistry A
Maik Nauka/Interperiodica/Springer, New York., 85(13), 2251-2256.
https://doi.org/10.1134/S0036024411130243
Pergal M, Džunuzović J, Kicanovic M, Vodnik V, Pergal MM, Jovanovic S. Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester. in Russian Journal of Physical Chemistry A. 2011;85(13):2251-2256.
doi:10.1134/S0036024411130243 .
Pergal, Marija, Džunuzović, Jasna, Kicanovic, M., Vodnik, Vesna, Pergal, Miodrag M., Jovanovic, S., "Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester" in Russian Journal of Physical Chemistry A, 85, no. 13 (2011):2251-2256,
https://doi.org/10.1134/S0036024411130243 . .
