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	Synthesis and Properties of Liquid Polycarbosilanes with Hyperbranched Structures
	Huang, Muhe ; Fang, Yunhui ; Li, Ran ; Huang, Tianhua ; Yu, Zhaoju（Xiamen Univ, Fujian Key Lab Adv Mat） ; Xia, Haiping ; Xia HP(夏海平)
	2009-04
关键词	liquid polycarbosilane precursor hyperbranched polymer SiC
英文摘要	Liquid polycarbosilanes substituted by unsaturated groups were prepared by a one-pot synthesis with Cl2Si(CH3)CH2Cl, Cl3SiCH2Cl, and CH2=CHCH2Cl (or HC CMgBr) as the starting materials. The as-received polycarbosilanes were characterized by gel permeation chromatography, Fourier transform infrared spectroscopy, and nuclear magnetic resonance and were confirmed to have hyperbranched Structures. The polymer yield, Si-H content, side reaction, unsaturated group content, and polymer structure are affected by the amount of the starting materials in feed. The thermal properties of the polycarbosilanes were investigated by thermogarvimetric analysis. The ceramic yield of allyhydridopolycarbosilane is about 60% and that of ethynylhydridopolycarbosilane is over 75%, indicating that the liquid polycarbosilanes have great potential to be promising precursors to SiC. Moreover, the compositions of the polycarbosilanes and the final ceramics can be tailored by controlling the amount Of the starting materials. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113:1611-1618, 2009
语种	英语
出版者	JOHN WILEY & SONS INC
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1002/app.30071]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Huang, Muhe,Fang, Yunhui,Li, Ran,et al. Synthesis and Properties of Liquid Polycarbosilanes with Hyperbranched Structures[J],2009.
APA	Huang, Muhe.,Fang, Yunhui.,Li, Ran.,Huang, Tianhua.,Yu, Zhaoju.,...&夏海平.(2009).Synthesis and Properties of Liquid Polycarbosilanes with Hyperbranched Structures..
MLA	Huang, Muhe,et al."Synthesis and Properties of Liquid Polycarbosilanes with Hyperbranched Structures".(2009).

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