线性ABC三嵌段共聚物在均聚物C中自组装的自洽平均场模拟

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (9): 1878.

线性ABC三嵌段共聚物在均聚物C中自组装的自洽平均场模拟

李伟^1,2, 姜伟¹

1. 中国科学院长春应用化学研究所高分子化学与物理国家重点实验室, 长春 130022;
2. 中国科学院研究生院, 北京 100049

收稿日期:2009-12-07 出版日期:2010-09-10 发布日期:2010-09-10
通讯作者: 姜伟, 男, 博士, 研究员, 博士生导师, 主要从事高分子结构与性能研究. E-mail: wjiang@ciac.jl.cn
基金资助:
国家自然科学基金(批准号: 50725312, 50930001, 50621302)资助.

Self-consistent Filed Theory Study on Self-assembly of Linear ABC Triblock Copolymer in Homopolymer C

LI Wei^1,2, JIANG Wei^1*

1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received:2009-12-07 Online:2010-09-10 Published:2010-09-10
Contact: JIANG Wei. E-mail: wjiang@ciac.jl.cn
Supported by:
国家自然科学基金(批准号: 50725312, 50930001, 50621302)资助.

摘要/Abstract

摘要： 应用实空间的自洽平均场理论研究了线性ABC三嵌段共聚物在均聚物C中的自组装. 模拟结果表明, 共聚物在均聚物中形成的分散相主要为核壳结构. 通过降低A与C之间的相互作用, 可以使核壳结构的成核嵌段发生从嵌段A向嵌段B的转变, 并且在转变过程中观察到了多种过渡结构, 包括带有凸起表面的盘状结构和柱状结构以及相互缠绕的柱状结构. 另外, 降低嵌段共聚物中A嵌段在共混体系中的含量有利于形成以B为核的核壳结构.

关键词: 三嵌段共聚物, 均聚物, 自组装, 自洽平均场理论

Abstract: The self-assembly of linear ABC triblock copolymer in homopolymer C was studied by the real-space self-consistent field theory. The simulative results show that the dispersed phase formed by the triblock copolymer in the homopolymer is mainly the core-shell structure. Decreasing the interaction between species A and C can change the core-forming block from A to B. There are several intermediate morphologies between the two main core-shell structures, including the cylinder with bump surface, the disk with bump surface and the twist cylinders. Moreover, the structure with core-forming block B is favorable at the low content of block A in the mixture.

Key words: Triblock copolymer, Homopolymer, Self-assembly, Self-consistent field theory

TrendMD:

李伟, 姜伟. 线性ABC三嵌段共聚物在均聚物C中自组装的自洽平均场模拟. 高等学校化学学报, 2010, 31(9): 1878.

LI Wei, JIANG Wei*. Self-consistent Filed Theory Study on Self-assembly of Linear ABC Triblock Copolymer in Homopolymer C. Chem. J. Chinese Universities, 2010, 31(9): 1878.

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