刚柔嵌段共聚物与均聚物在溶液中的自组装  

The self-assembly of rod-coil block copolymer and homopolymer blends in solution

作　　者：张瑞芬[1] 王丝雯 何林李[1] 

机构地区：[1]温州大学物理与电子信息工程学院,浙江温州325035

出　　处：《浙江大学学报（理学版）》2014年第3期303-306,309,共5页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(21104060)

摘　　要：采用耗散粒子动力学(DPD)模拟方法研究了向刚柔嵌段共聚物溶液中掺入均聚物的自组装行为.当掺入的刚性棒或柔性高分子链浓度不同时,由于刚性棒的取向性及柔性高分子链构象熵的变化,观察到了一系列丰富的相结构,如双层柱状、层状、层柱共混状、反转的空心柱状等.少量的均聚物和刚柔嵌段共聚物溶液共混后的密度分布显示,均聚物聚集于胶束相结构的中心.Using the dissipative particle dynamics simulation method, we have studied the self-assembly of the blends of rod-coil block copolymer and homopolymer in selective solution. The diverse morphologies such as double cylin der, lamella, lamella and cylinder mixed, inversed hollow cylinder are observed with varying concentration of homopolymer. The anisotropy and orientation of rods, and the entropy caused by the stretch of coils can influence the morphology of aggregates. The density graph of homopolymer and block copolymer blended is shown that the homopolymer aggregates in the core of cylinder when the concentration of homopolymer is low.

关 键 词：耗散粒子动力学 刚性棒 柔性链 刚柔嵌段共聚物 均聚物 

分 类 号：O631[理学—高分子化学]