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Blends of a siloxane/urea/urethane‐segmented copolymer with an IPDI‐based polyetherurethane
Author(s) -
Ho Tai,
Wynne Kenneth J.
Publication year - 1995
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1995.220060104
Subject(s) - isophorone diisocyanate , copolymer , materials science , siloxane , polymer chemistry , polyurethane , diol , ether , urea , organic chemistry , polymer , composite material , chemistry
A series of copolymer blends have been prepared using a poly(ether urethane) and a poly(siloxane–urea–urethane). The copolymers were prepared by a hardsegment first, two‐step polymerization method. The hard segments of the copolymers were derived from isophorone diisocyanate (IP) and 1,4‐benzenedimethanol (B), and the soft segments were based on polytetrahydrofuran (PTMO, M w = 2000), and polydimethylsiloxane (PDMS, M w =27,000), respectively. The siloxanecontaining copolymer, PDMS27K‐IP‐B2 (2 moles diol chain extender/mole PDMS27K), was used as the minor component (1.6, 2.5 and 6.0 wt%) in a series of blends. These blends were found to preserve the mechanical properties of the poly(ether–urethane) as well as the surface properties of the poly(siloxane–urea–urethane).