摘要
PEKEKK(T) and PEKEKK(T/I) have two different crystal structures: a conventional Form Ⅰ structure, the same as that observed in PEEK, which is usually developed from melt crystallization, and a new Form Ⅱ structure which can be developed from cold crystallization or solvent induced crystallization(by exposing the glassy state sample to methylene chloride). PEKEKK(I) does not show polymorphism.
PEKEKK(T) and PEKEKK(T/I) have two different crystal structures: a conventional Form Ⅰ structure, the same as that observed in PEEK, which is usually developed from melt crystallization, and a new Form Ⅱ structure which can be developed from cold crystallization or solvent induced crystallization(by exposing the glassy state sample to methylene chloride). PEKEKK(I) does not show polymorphism.
出处
《应用化学》
CAS
CSCD
北大核心
2000年第2期165-167,共3页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金! ( 2 96740 2 9)
国家"八六三"项目基金资助! ( 863 -2 -7-3 -3 )
关键词
聚芳醚酮
晶体结构
结晶
结晶型
poly(aryl ether ketone),crystal structure,crystallization,polymorphism
