CROWDING EFFECT INDUCED PHASE TRANSITION OF AMPHIPHILIC DIBLOCK COPOLYMER IN SOLUTION  

作　　者：Zhu Liu Zhi-Bin Jiang Hong Yang Shu-Ming Bai 汪蓉 薛奇 

机构地区：[1]Department of Polymer Science and Engineering,State Key Laboratory of Coordination Chemistry,Nanjing National Laboratory of Microstructures,School of Chemistry and Chemical Engineering,Nanjing University

出　　处：《Chinese Journal of Polymer Science》2013年第11期1491-1500,共10页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundations of China(Nos.20874046,21074053 and 51133002);National Basic Research Program of China(Nos.2010CB923303,2012CB821503);Fundamental Research Funds for the Central Universities(No.1095020515)

摘　　要：The crowding agent induced phase transition of amphiphilic block copolymers in solution was explicitly considered. The influence of the size and the volume fraction of the crowding agent on the phase separation of ampbiphilic diblock copolymers is investigated by using self-consistent field theory （SCFT） method. The concentration of the disorder to order transition of the block copolymer decreases when the size of the crowding agent is larger than that of the solvent. The higher volume fraction of the crowding agent will induce the transition of the block copolymer from disorder to order state at a lower concentration. The relation between the size and the volume fraction of the crowding agent is elucidated. When the size of the crowding agent is larger, its volume fraction of the disorder to order transition of the block copolymer will be lower. The conformation of the crowding agent considered as a polymer chain is also studied and compared.The crowding agent induced phase transition of amphiphilic block copolymers in solution was explicitly considered. The influence of the size and the volume fraction of the crowding agent on the phase separation of ampbiphilic diblock copolymers is investigated by using self-consistent field theory （SCFT） method. The concentration of the disorder to order transition of the block copolymer decreases when the size of the crowding agent is larger than that of the solvent. The higher volume fraction of the crowding agent will induce the transition of the block copolymer from disorder to order state at a lower concentration. The relation between the size and the volume fraction of the crowding agent is elucidated. When the size of the crowding agent is larger, its volume fraction of the disorder to order transition of the block copolymer will be lower. The conformation of the crowding agent considered as a polymer chain is also studied and compared.

关 键 词：Crowding agent Disorder to order transition Block copolymer. 

分 类 号：O631.3[理学—高分子化学]