Sphere-to-rod transition of short-chain PEO-b-PDMS-b-PEO in aqueous solution induced by copolymer concentration  

作　　者：Xiao Li Zhan Bi Chen Qing Hua Zhang Ling Min Yi 

机构地区：[1]College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China [2]Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China

出　　处：《Chinese Chemical Letters》2008年第11期1363-1366,共4页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China (No.20606029);China Postdoctoral Science Foundation (No.20070420230).

摘　　要：A short-chain triblock copolymer EO9-DMS7-EO9 was synthesized by coupling reaction of allyl-terminated poly（ethylene oxide） and Si-H-terminated poly（dimethylsiloxane）. The structure and purity of synthesized copolymer was carefully characterized. Self-assembly behavior of EO9-DMST-EO9 triblock copolymer in water was investigated. And it was found that along with the increase of copolymer concentration, morphology of self-assembled aggregates transits from sphere to rod. A plausible understanding of the morphology transition for the investigated triblock copolymer was proposed.A short-chain triblock copolymer EO9-DMS7-EO9 was synthesized by coupling reaction of allyl-terminated poly（ethylene oxide） and Si-H-terminated poly（dimethylsiloxane）. The structure and purity of synthesized copolymer was carefully characterized. Self-assembly behavior of EO9-DMST-EO9 triblock copolymer in water was investigated. And it was found that along with the increase of copolymer concentration, morphology of self-assembled aggregates transits from sphere to rod. A plausible understanding of the morphology transition for the investigated triblock copolymer was proposed.

关 键 词：Block copolymer Self-assembly POLYSILOXANE Morphology transition 

分 类 号：O62[理学—有机化学]