微量聚四氢呋喃-聚甲基丙烯酸甲酯/聚四氢呋喃共混体系稀固体溶液中共聚物胶束的抑制成核作用  

NUCLEATION RESTRICTED BY MICELLES IN DILUTE PTHF-b-PMMA/PTHF SOLUTIONS

作　　者：刘立志[1] 姜炳政[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春邮政编码130022

出　　处：《高分子学报》1992年第6期664-669,共6页Acta Polymerica Sinica

基　　金：国家自然科学基金

摘　　要：本工作将Leibler、Whitmore和Mayes等近期关于非晶嵌段共聚物共混体系胶束理论应用于结晶嵌段共聚物共混体系的熔融态,对聚甲基丙烯酸甲酯-聚四氢呋喃两嵌段共聚物与聚四氢呋喃均聚物共混体系的结晶行为进行了研究.结果表明,很低的共聚物浓度(如1％),其胶束在共混体系的结晶过程中即可显著地起到抑制成核的作用.这对改善结晶均聚物的形态及性能有一定的应用价值.In this paper, we discuss the effect of spherical micelle on the crystallization behaviour in dilute poly (methyl methacrylate-b-tetrahydrofuran) diblock copolymer/tetrahydrofuran ho-mopolymer solutions. The results show that even for very small copolymer volume fractions, micelles may restrict the nucleation of polytetrahydrofuran obviously for which a good explanation can be made according to the micelle theories developed by Leibler, Orland and Wheeler and by Whitmore and Noolandi.

关 键 词：嵌段共聚物 共混 胶束 结晶行为 

分 类 号：O631.4[理学—高分子化学]