甲基丙烯酸-3-三甲氧基硅丙酯/苯乙烯共聚乳胶粒微结构  

Microstructure of the Hybrid(Core-shell) Latex Synthesized by Emulsion Copolymerization of 3-Trimethoxysilyl Propyl Methacrylate and Styrene

作　　者：倪克钒[1] 单国荣[1] 翁志学[1] 

机构地区：[1]化学工程联合国家重点实验室聚合反应工程实验室,浙江大学化学工程与生物工程学系,杭州310027

出　　处：《高等学校化学学报》2006年第6期1186-1188,共3页Chemical Journal of Chinese Universities

基　　金：教育部新世纪优秀人才支持计划(批准号:NCET-05-0512)资助

摘　　要：The microstructures of the hybrid core-shell latex synthesized by emulsion copolymerization of 3-trimethoxysilyl propyl methacrylate（MPS） and styrene were investigated.The polymers obtained under different operating conditions were characterized by（）29Si solid state NMR,FTIR,DSC and elemental analysis.It was found that under a neutral condition all of the MPS monomers were copolymerized into the polymer chain,small part of SiOR groups were hydrolyzed into SiOH groups and crosslinked by hydrogen bonds,the content of crosslinking is increased by MPS addition amount.Under basic condition,part of MPS were hydrolyzed and condensed into oligomers firstly,then these resultants were grafted into the polymer chain as pendent chain by both free radical polymerization and hydrolysis-condensation reaction.And under acidic condition,MPS in the system was easily hydrolyized and acted as crosslinker so that the emulsion became gels rapidly.The microstructures of the hybrid core-shell latex synthesized by emulsion copolymerization of 3-trimethoxysilyl propyl methacrylate（MPS） and styrene were investigated. The polymers obtained under different operating conditions were characterized by 29Si solid state NMR, FTIR, DSC and elemental analysis. It was found that under a neutral condition all of the MPS monomers were copolymerized into the polymer chain, small part of SiOR groups were hydrolyzed into SiOH groups and crosslinked by hydrogen bonds, the content of crosslinking is increased by MPS addition amount. Under basic condition, part of MPS were hydrolyzed and condensed into oligomers firstly, then these resultants were grafted into the polymer chain as pendent chain by both free radical polymerization and hydrolysis-condensation reaction. And under acidic condition, MPS in the system was easily hydrolyized and acted as crosslinker so that the emulsion became gels rapidly.

关 键 词：甲基丙烯酸-3-三甲氧基硅丙酯 苯乙烯 乳液聚合 微结构 

分 类 号：O631[理学—高分子化学]