文献类型：期刊文献

英文题名：Structural evolution of multicompartment micelles selfássembled from linear ABC triblock copolymer in selective solvents

作者：Jiang, Tao[1]; Wang, Liquan[1]; Lin, Shaoliang[1]; Lin, Jiaping[1]; Li, Yongliang[1]

机构：[1] Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2011

卷号：27

期号：10

起止页码：6440

外文期刊名：Langmuir

收录：EI(收录号：20112414047892)

语种：英文

外文关键词：Solubility - Block copolymers - Dissipative particle dynamics

摘要：Using dissipative particle dynamics simulation, structural evolution from concentric multicompartment micelles to raspberry-like multicompartment micelles selfássembled from linear ABC triblock copolymers in selective solvents was investigated. The structural transformation from concentric micelles to raspberry-like micelles can be controlled by changing either the length of B blocks or the solubility of B block. It was found that the structures with B bumps on C surface (B-bump-C) are formed at shorter B block length and the structures with C bumps on B surface (C-bump-B) are formed at relative lower solubility of B blocks. The formation of B-bump-C is entropy-driven, while the formation of C-bump-B is enthalpy-dominated. Furthermore, when the length of C blocks is much lower than that of B blocks, an inner-penetrating vesicle was discovered. The results gained through the simulations provide an insight into the mechanism behind the formation of raspberry-like micelles. ? 2011 American Chemical Society.