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Synthesis of vinyl substitute poly(silphenylene‐siloxane) via silyl hydride‐dialkoxysilane process
Author(s) -
Xunjun Chen,
Yingde Cui,
Guoqiang Yin,
Liewen Liao
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.26252
Subject(s) - siloxane , condensation polymer , hydrosilylation , polymer chemistry , silylation , polymer , materials science , inert gas , hydride , vinyl polymer , chemistry , organic chemistry , catalysis , polymerization , composite material , hydrogen
Abstract The synthesis of vinyl‐substituted silphenylene‐siloxane polymer through B(C 6 F 5 ) 3 catalyzed polycondensation of 1,4‐bis(dimethylsilyl)benzene and vinylmethyldimethoxysilane is described. 1 H‐NMR, 29 Si‐NMR, and UV spectroscopy indicate that the vinyl groups remain undamaged during the polycondensation reaction. No hydrosilylation side reaction is observed under the reaction conditions. The microstructure of the polymer is not perfectly alternating with a randomization of 20%. The temperature for 5% mass loss is 430°C in inert atmosphere and 417°C in oxidative atmosphere with a residue of 56% at 700°C. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007