嵌段共聚物微胶束行为的研究Ⅲ．动态激光光散射法研究聚（苯乙烯－异戊二烯）星形嵌段共聚物在选择性溶剂中微胶束的形成过程  

The Systematic Study on Micellization Behavior of Block Copolymer Ⅲ Study on the Micellization Behavior of Polystyrene-polyisoprene Diblock Copolymer in Selective Solvent via Dynamic Laser Light Scattering

作　　者：卜路嘉[1] 袁国雄[1] 李碧琳[2] 徐种德[1,2] L.J.Fetters 

机构地区：[1]华东理工大学高分子系 [2]中国科技大学结构分析开放实验室 [3]Exxon Research and Engineering Company,Annaodate

出　　处：《功能高分子学报》1994年第3期254-264,共11页Journal of Functional Polymers

基　　金：国家自然科学基金

摘　　要：采用动态激光光散射研究聚（苯乙烯－异成二烯）（ＰＳ—ＰＩ）星形嵌段共聚物在选择性溶剂二氧六环／甲醇混合体系中微胶束的形成过程。讨论了温度、混合溶剂的组成、星形嵌段共聚物的臂数及组成对微胶束形成的影响。验证了临界接触浓度的存在。并就不同结构的星形嵌段共聚物形成微胶束的形成进行了讨论。The micellization behavior of a series of monodisperse Polystyrene-polyisoprene (PS-PI) starblock copolymer with same composition and different arm number, different structure in selective solvent, dioxane / methanol mixture, was studied by means of dynamic laser light scattering (DLLS). It is found that the microgel was formed when PS as inner block alld PI as outer block, while micelle was formed when PI as inner block and PS as outer block in above solvent mixture. The hydrodynamic diameters of micelle and molecularly dissolved copolymer were measured by DLLS and the effect of the micellization of the composition of the solvents, arm number and composition & the polymers and temperature were discussed via the DLLS diagrams. The critical contaCt concentration (C) of micelle which was introduced ill the preceding paper was verified again in this paper

关 键 词：嵌段共聚物 微胶束 光散射 PS PI 

分 类 号：O631.12[理学—高分子化学]