INTERPENETRATING POLYMER NETWORKS OF POLY(DIMETHYL SILOXANE URETHANE) AND POLY(METHYL METHACRYLATE)

被引:32
作者
ZHOU, PG [1 ]
FRISCH, HL [1 ]
ROGOVINA, L [1 ]
MAKAROVA, L [1 ]
ZHDANOV, A [1 ]
SERGEIENKO, N [1 ]
机构
[1] RUSSIAN ACAD SCI, INST ORGANOELEMENTO CPDS, MOSCOW 117813, RUSSIA
关键词
INTERPENETRATING POLYMER NETWORKS; POLY(DIMETHYLSILOXANE-URETHANE); POLY(METHYL METHACRYLATE);
D O I
10.1002/pola.1993.080311008
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Simultaneous IPNs of poly(dimethyl siloxane-urethane) (PDMSU)/poly(methyl methacrylate) (PMMA) and related isomers have been prepared by using new oligomers of bis(beta-hydroxyethoxymethyl)poly(dimethyl siloxane)s (PDMS diols) and new crosslinkers biuret triisocyanate (BTI) and tris (beta-hydroxylethoxymethyl dimethylsiloxy) phenylsilane (Si-triol). Their phase morphology have been characterized by DSC and SEM. The SEM phase domain size is decreased by increasing crosslink density of the PDMSU network. A single phase IPN of PDMSU/PMMA can be made at an M(c) = 1000 and 80 wt% of PDMSU. All of the pseudo- or semi-IPNs and blends of PDMSU and PMMA were phase separated with phase domain sizes ranging from 0.2 to several micrometers. The full IPNs of PDMSU/PMMA have better thermal resistance compared to the blends of linear PDMSU and linear PMMA. (C) 1993 John Wiley & Sons, Inc.
引用
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页码:2481 / 2491
页数:11
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