Blends of a siloxane/urea/urethane‐segmented copolymer with an IPDI‐based polyetherurethane
作者:
Tai Ho,
Kenneth J. Wynne,
期刊:
Polymers for Advanced Technologies
(WILEY Available online 1995)
卷期:
Volume 6,
issue 1
页码: 25-31
ISSN:1042-7147
年代: 1995
DOI:10.1002/pat.1995.220060104
出版商: John Wiley&Sons, Ltd.
关键词: Siloxane‐segmented copolymer;Blends;Low surface energy polymers;Isophorone diisocyanate;Hard‐segment first copolymerization
数据来源: WILEY
摘要:
AbstractA 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, Mw= 2000), and polydimethylsiloxane (PDMS, Mw=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
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