文献类型：期刊文献

英文题名：Aggregation Behavior of Graft Copolymer with Rigid Backbone

作者：Cai, Chunhua[1];Lin, Jiaping[1];Chen, Tao[1];Tian, Xiaohui[1]

机构：[1]E China Univ Sci & Technol, Shangkai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：26

期号：4

起止页码：2791

外文期刊名：LANGMUIR

收录：;EI(收录号：20100812731509);WOS:【SCI-EXPANDED(收录号:WOS:000274342200090)】；

基金：This work was supported by National Natural Science Foundation of China (50673026). Support from Projects of Shanghai Municipality (09XD1401400, 082231, 0952nm05100, B502, and 08DZ2230500) is also appreciated.

语种：英文

外文关键词：Polyethylene glycols - Micelles - Graft copolymers - Self assembly - Organic solvents - Solutions - Dimethylformamide

摘要：The self-assembly behavior of poly(gamma-benzyl-L-glutamate)-graft-poly(ethylene glycol) rod-coil graft copolymers in aqueous solution was investigated. With tetrahydrofuran (THF) as initial solvent, vesicles were observed for the graft copolymers with lower degree of grafting. When the degree of grafting increases, the aggregate morphology transforms from vesicles to spindle-like micelles then to spherical micelles. When N,N'-dimethylformamide (DMF) is introduced into the initial solvent, the vesicles transform to spindles. Increasing DMF volume fraction leads to it spindle to connected-spindle transition. On the basis of the experimental results, the mechanism of the morphological transition of the rod-coil graft copolymer is suggested.