Open AccessCrosslinked polyurethanes based on hyperbranched polymers
Author(s) -
Jovana S. Vuković,
Marija V. Pergal,
Slobodan Jovanović,
Vesna Vodnik
Publication year - 2008
Publication title -
hemijska industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 19
eISSN - 2217-7426
pISSN - 0367-598X
DOI - 10.2298/hemind0806353v
Subject(s) - polyurethane , siloxane , ethylene oxide , materials science , polymer , swelling , elastomer , polymer chemistry , polyester , oxide , ethylene , poly ethylene , chemical engineering , propylene oxide , composite material , copolymer , chemistry , organic chemistry , catalysis , engineering , metallurgy
In this paper, two samples of polyurethane (PU) crosslinked with hydroxy -functonal hyperbranched aliphatic polyester of the second pseudo generation were investigated. For the synthesis of these crosslinked PUs two different macrodiols were used: poly(tetramethyleneoxide) (PTMO) for PUPTMO and ethylene oxide-poly(dimethylsiloxane)-ethylene oxide (PDMS-EO) for PUPDMS-EO sample. Synthesized samples behave as elastomers and have yellow color. Obtained results show that swelling degree of the sample PUPDMS-EO in N-methyl-2-pyrrolidinon (NMP) determined at room temperature is higher than for the sample PUPTMO. It has been also observed that thermal properties of these polyurethane networks can be changed by incorporation of siloxane sequences in their structure