Stereocomplex Crystallization in Asymmetric Diblock Copolymers Studied by Dynamic Monte Carlo Simulations  

作　　者：Ying Xu Jun Yang Zong-Fa Liu Zhi-Ping Zhou Zhao-Peng Liang Tong-Fan Hao Yi-Jing Nie 

机构地区：[1]Research School of Polymeric Materials,School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China [2]Institute of Green Chemistry and Chemical Technology,Jiangsu University,Zhenjiang 212013,China

出　　处：《Chinese Journal of Polymer Science》2021年第5期632-639,I0008,共9页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21404050);the Research Foundation of Jiangsu University(No.14JDG059);Hao also thanks the supports from Postdoctoral Science Foundation of China(No.2019M651478);Natural Science Foundation of Jiangsu Province(No.BK20190866);Natural Science Foundation of the Higher Education Institutions of Jiangsu Provinee(No.18KJB150009).

摘　　要：Stereocomplex crystallization in asymmetric diblock copolymers was studied using dynamic Monte Carlo simulations,and the key factor dominating the formation of stereocomplex crystallites(SCs)was uncovered.The asymmetric diblock copolymers with higher degree of asymmetry exhibit larger difference between volume fractions of beads of different blocks,and local miscibility between different kinds of beads is lower,leading to lower SC content.To minimize the interference from volume fraction of beads,the SC formation in blends of asymmetric diblock copolymers was also studied.For the cases where the volume fractions of beads of different blocks are the same,similar local miscibility between beads of different blocks and similar SC content was observed.These findings indicate that the volume fraction of beads of different blocks is a key factor controlling the SC formation in the asymmetric diblock copolymers.The SC content can be regulated by adjusting the difference between the contents of beads of different blocks in asymmetric diblock copolymers.

关 键 词：Asymmetric diblock copolymers Monte Carlo simulations Stereocomplex crystallization 

分 类 号：O631.1[理学—高分子化学]