摘要
应用一维电子密度相关函数方法，对含不同联苯结构的ＰＥＥＫＫ－ＰＥＢＥＫＫ共聚物样品小角Ｘ射线散射（ＳＡＸＳ）去模糊强度分析计算表明：ＰＥＥＫＫ－ＰＥＢＥＫＫ共聚物的聚集态结构明显地依赖于共聚物中联苯含量。当联苯含量ｎｂ＝０．３５时，积分不变量Ｑ，长周期Ｌ，平均结晶片层厚ｄ，电子密度差η_ｃ－η_ａ和结晶度Ｗ_（ｃ，ｘ）值为最小，比表面积Ｏ_ｓ为最大。
Structural studies of poly(ether ether ketone ketone) and poly(ether biphenyl ether ketone ketone) copolymers by means of SAXS and one dimensional electron density correlation function methods revealed that the structure of the aggregated state of copolymers depended closely on the biphenyl content(n_b) in the copolymers. When n_b=0.35,the invariant Q,long period L,average crystal lamellae d and electron density difference ηc-ηa(obtained by SAXS analysis) and the degree of crystallinity W_(c,x) gave minimum values, but the specific inner surfaces O_s possessed maximum values.
出处
《应用化学》
CAS
CSCD
北大核心
1996年第1期58-61,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学重点基金
关键词
PEEKK
PEBEKK
SAXS
共聚物
结晶度
poly(ether ether ketone ketone),poly(ether biphenyl ether ketone ketone),copolymer,SAXS,structure
