高分子链模型对两亲性二嵌段共聚物系统均匀溶液/胶束转变的影响  

Effect of Polymer Chain Model on Homogeneous Solution/MicelleTransition in Amphiphilic Diblock Copolymer System

作　　者：张惠 韩向刚[1] ZHANG Hui;HAN Xianggang(School of Science,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古科技大学理学院,内蒙古包头014010

出　　处：《吉林大学学报（理学版）》2021年第4期977-981,共5页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:21564011).

摘　　要：利用格子自洽场方法,通过计算系统相图和比热研究在两亲性二嵌段共聚物溶液体系中高分子浓度和高分子链模型对胶束形成的影响.结果表明,随着高分子浓度的增加,胶束出现的温度逐渐升高.相对于可直接折返分子链模型,不可直接折返分子链模型增加了体积排斥效应,有利于均匀溶液/胶束转变的出现,但在一定程度上限制了胶束聚集程度的增加.Using self-consistent field theory lattice model,we studied the effect of polymer concentration and polymer chain model on micelle formation in amphiphilic diblock copolymer solutions by calculating phase diagram and specific heat.The results show that the temperature of micelle formation increases gradually with the increase of polymer concentration.Compared with direct backfolding polymer chain model,the non-direct backfolding polymer chain model increases the excluded volume effect,which is favorable to unimer-micelle transition.However,the excluded volume effect limits the increase of micelle aggregation to a certain extent.

关 键 词：两亲性嵌段共聚物 胶束 高分子链模型 自洽场方法 

分 类 号：O411[理学—理论物理]