超支化聚硅氧基硅烷的合成及其表征  

SYNTHESIS AND CHARACTERIZATION OF HYPERBRANCHED POLY(SILOXYSILANES)

作　　者：王欣[1] 范晓东[1] 王生杰[1] 孔杰[1] 刘郁杨[1] 龚彦[1] 

机构地区：[1]西北工业大学理学院应用化学系,西安710072

出　　处：《高分子学报》2006年第9期1112-1116,共5页Acta Polymerica Sinica

基　　金：西北工业大学科技创新基金(基金号M450211)资助项目

摘　　要：Three hyperbranched poly（siloxysilanes） were prepared from AB3-type monomers at the presence of Karstedt catalyst.The detailed synthesis procedures of AB3-type monomers by reaction between γ-methacryloyloxy propyltrimethoxysilane or vinyltrimethoxysilane with chlorosilane using anhydrous ferric chloride as the catalyst were described.This new approach can simplify the synthetic routes for hyperbranched polysiloxanes.FTIR,（）1H-NMR,(（）13C-NMR,)（）29Si-NMR,elemental analysis and SEC/MALLS were employed to identify the structure of the polymers. The analyses revealed that the reaction between alkoxysilane and chlorosilane could be feasibly catalyzed by anhydrous ferric chloride.The reaction of vinyltrimethoxysilane with chlorosilane could be carried out more easily than that of γ-methylacrylacyloxypropyltrimethoxylsilane with chlorosilane due to its steric hindrance effect.Three hyperbranched poly （siloxysilanes） were prepared from ABe-type monomers at the presence of Karstedt catalyst. The detailed synthesis procedures of AB3-type monomers by reaction between y-methacryloyloxy propyhrimethoxysilane or vinyltrimethoxysilane with chlorosilane using anhydrous ferric chloride as the catalyst were described. This new approach can simplify the synthetic routes for hyperbranched polysiloxanes. FTIR, ^1H-NMR, ^13 C-NMR, ^29 Si-NMR, elemental analysis and SEC/MALLS were employed to identify the structure of the polymers. The analyses revealed that the reaction between alkoxysilane and chlorosilane could be feasibly catalyzed by anhydrous ferric chloride. The reaction of vinyltrimethoxysilane with chlorosilane could be carried out more easily than that of γ-methylacrylacyloxypropyltrimethoxylsilane with chlorosilane due to its steric hindrance effect.

关 键 词：超支化聚合物 硅氧基硅烷 金属卤化物催化 

分 类 号：O634.41[理学—高分子化学]