文章基本信息

标题：Synthesis of Polysilsesquioxanes with Double-Decker Silsesquioxane Repeating Units
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作者：M. A. Hoque ; Y. Kawakami
期刊名称：Journal of Scientific Research
印刷版ISSN：2070-0237
电子版ISSN：2070-0245
出版年度：2016
卷号：8
期号：2
页码：217-227
DOI：10.3329/jsr.v8i2.26791
语种：English
出版社：Rajshahi University
摘要：Polysilsesquioxanes were synthesized with end functional double-decker silsesquioxanes (DDSQ) and the polymers were characterized with 1H NMR, 29Si NMR and size exclusion chromatography (SEC). Polysilsesquioxane containing iso-butyl end capped DDSQ showed better solubility compared to that of methyl end capped DDSQ. Thermal properties investigated with TGA showed that the polymers exhibited exceptionally high stabilities in the range of 470-530°C even in both nitrogen and air atmosphere. The average residual weights of the polymers at 760°C were around 80% in the nitrogen atmosphere.
其他摘要：Polysilsesquioxanes were synthesized with end functional double-decker silsesquioxanes (DDSQ) and the polymers were characterized with 1 H NMR, 29 Si NMR and size exclusion chromatography (SEC). Polysilsesquioxane containing iso -butyl end capped DDSQ showed better solubility compared to that of methyl end capped DDSQ. Thermal properties investigated with TGA showed that the polymers exhibited exceptionally high stabilities in the range of 470-530°C even in both nitrogen and air atmosphere. The average residual weights of the polymers at 760°C were around 80% in the nitrogen atmosphere.
关键词：Polysilsesquioxane;Double-decker silsesquioxane;Cross-dehydrocoupling reaction;Thermally stable polymer;Polycondensation.