首页 | 本学科首页   官方微博 | 高级检索  
     


Microphase separation in melts of double comb copolymers
Authors:V. V. Palyulin  I. I. Potemkin
Affiliation:(1) Faculty of Physics, Moscow State University, Leninskie gory, Moscow, 119992, Russia
Abstract:Within the random-phase approximation, the conditions providing instability of a spatially homogeneous state of melts of double comb copolymers relative to microphase separation have been studied. As compared with the case of diblock copolymer melt connectivity between branch points of linear diblock copolymers and a backbone (densely grafted comb copolymer) is expected to assist the transition from the spatially homogeneous state to the microphase separated state; in other words, this factor decreases the incompatibility parameter at the transition point. Two characteristic types of spinodal behavior as a function of the number of repeating units have been found: one type is observed when the fragment of backbone between neighboring branch points is long; another type of behavior takes place when this distance is small. In one of the cases under study, the period of microstructure abruptly changes with variation of the interaction parameters of the system.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号