Complex Micelles from Self-Assembly of ABA Triblock Copolymers in B-Selective Solvents

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• 作者：Weixin Kong ; Baohui Li ; Qinghua Jin ; Datong Ding ; An-Chang Shi
• 刊名：Langmuir
• 出版年：2010
• 出版时间：March 16, 2010
• 年：2010
• 卷：26
• 期：6
• 页码：4226-4232
• 全文大小：1034K
• 年卷期：v.26,no.6(March 16, 2010)
• ISSN：1520-5827

文摘

We report an extensive simulation study of the self-assembly of amphiphilic ABA triblock copolymers dissolved in solvents selective for the middle B-block. The effects of copolymer composition, copolymer concentration, and A-solvent interactions on the morphologies and morphological transitions of the aggregates are examined systematically. The simulations reveal that a rich variety of aggregates, ranging from spherical and rodlike micelles and vesicles to toroidal and net-cage micelles, can be formed spontaneously from a randomly generated initial state. Phase diagrams are constructed and rich morphological transitions are predicted. Chain packing in different micelles is investigated. The simulation results are compared with previous observations or predictions for related copolymer systems.