Monte Carlo Simulation of Effects of Homopolymer Chain Length on Interfacial Properties of A/AB/B Ternary Polymer Blends
Monte Carlo Simulation of Effects of Homopolymer Chain Length on Interfacial Properties of A/AB/B Ternary Polymer Blends
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DOI：
10.7503/cjcu20150297
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发表时间：
2015-12-10
影响因子：
1
通讯作者：
Zhang Hanzhuang
中科院分区：
文献类型：
--
作者：
Liu Dongmei;Duan Xiaozheng;Zhang Hanzhuang
采用Monte Carlo模拟方法研究了均聚物链长对两种不相容均聚物界面性质的影响。当两嵌段共聚物的链长固定在N-C = 20时，随着均聚物的链长（N-H）从10增加到60，界面厚度显著增加。两嵌段共聚物链的取向参数q随着N-H从10增加到40而减小，但随着均聚物链长的进一步增加而增大，这意味着两嵌段共聚物的拉伸表现出对均聚物链长的非单调依赖性。当两嵌段共聚物链长固定为N-C = 60时，随着均聚物链长从N-H = 10增加到60，界面厚度减小，两嵌段共聚物链取向参数q减小，表明两嵌段链的拉伸减弱。
We employed Monte Carlo simulation to investigate the effects of chain length of the homopolymer on the interfacial properties between two immiscible homopolymers. When the chain length of diblock copolymer is fixed at N-C = 20, as the chain length(N-H) of homopolymer increases from 10 to 60, the interface thickness increases significantly. The orientation parameter q of the diblock copolymer chain decreases with the increase of N-H from 10 to 40, but enlarges with the further increase of homopolymer chain length, which means that the stretching of diblock copolymer displays a non-monotonic dependence on the homopolymer chain length. When the diblock copolymer chain length is fixed as N-C = 60, as the chain length of homopolymer increases from N-H = 10 to 60, the interface thickness decreases and the diblock copolymer chain orientation parameter q decreases, indicating that the stretching of diblock chain is weakened.