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OALib Journal期刊
ISSN: 2333-9721
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基于非共价键作用的二嵌段共聚物/均聚物超分子体系的自组装行为
DOI: 10.3724/SP.J.1105.2011.11017, PP. 1320-1328
Keywords: 非共价键,自洽场理论,超分子,胶束
Abstract:
采用实空间求解的自洽场理论,研究了两亲性二嵌段共聚物(AB)/均聚物(C)超分子体系在溶液中的自组装行为,其中B疏水嵌段的自由末端与C均聚物的一个末端形成可逆的非共价键.在稀溶液中,AB/C超分子聚合物体系通过自组装形成了一系列不同形貌的胶束,如核-壳-冠的三层胶束和蠕虫状胶束等.研究发现,胶束形貌受到非共价键强度和初始配比的影响.随着非共价键强度的增加,超分子ABC三嵌段共聚物的含量相应地增加,而胶束形貌由三层结构向蠕虫状结构转变.此外,初始配比的改变也会引起胶束形貌的极大改变.
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