聚氧化乙烯-聚苯乙烯-聚氧化乙烯三嵌段共聚物的微相分离与结晶

CRYSTALLIZATION AND MICROPHASE SEPARATION OF POLY (ETHYLENE OXIDE-STYRENE-ETHYLENE OXIDE) TRIBLOCK COPLYMERS

本工作研究了多分散和单分散聚氧化乙烯-聚苯乙烯-聚氧化乙烯三嵌段共聚物(PEO-PS-PEO)的结晶行为,及这些试样按非晶型嵌段共聚物进行微相分离后再结晶的结晶特点.

The crystallization behaviour of polydisperse and monodisperse poly (ethylene oxide-styrene-ethylene oxide)triblock copolymers has been studied, including these samples, of which the microphase separation took place first at high casting temperature and then crystallized at room temperature. The results show that the crystallization behavior of the copolymer could be very different when its microphase seperation is different due to the polydispersity of its molecular weight, the different casting solvents, and the casting temperature which affect the crystalline ability of PEO block of it.