聚酰亚胺对高性能树脂共混体系界面的反应增强  

Reactive Reinforcement of the Interface of High Performance Polymer Blends by PMR-POI

作　　者：赖明芳[1] 杨宇明[1] 刘景江[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理与化学国家重点实验室,长春130022

出　　处：《高等学校化学学报》2001年第8期1414-1418,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :5 99730 2 2 );国家重点基础研究基金 (批准号 :G19990 6 480 6 )

摘　　要：研究了以 5 -降冰片烯 -2 ,3-二羧酸单甲酯为端基的 PMR型聚酰亚胺 ( POI)作为界面介质对部分相容的聚醚砜 /聚苯硫醚 ( PES/ PPS)、聚醚醚酮 /聚醚砜 ( PEEK/ PES)共混体系的界面性质、形态结构及结晶行为的影响 .结果表明 ,POI可以有效地增强两相间的界面粘结 ,显著降低 PPS/ PES共混物中 PPS分散区的尺寸 ,改善两组分间的相容性 .在熔融共混过程中 ,POI从本体向界面扩散并同 PPS,PES产生交联和 /或接枝 ,POI同 PPS的反应活性远高于 PES,但 POI与 PES发生反应 . POI是The effect of PMR polyimide(POI) as the interfacial agent on the interface characteristics, morphology features and crystallization of poly(ether sulfone)/poly(phenylene sulfide)(PES/PPS) and poly(ether ether ketone)/poly(ether sulfone)(PEEK/PES) partly miscible blends were investigated by means of the scanning electron microscopy, WAXD and XPS surface analysis. It is found that the interfacial adhesion was enhanced remarkably, the size of the dispersed phase particles was reduced significantly and the miscibility was improved by the addition of POI. During melt blending cross link and/or grafting reaction of POI with PES, PEEK and PPS homopolymers was detected, however the reaction activity of POI with PPS was much higher than that of PES and PEEK. It was also found that POI was an effective nucleation agent of the crystallization of PPS.

关 键 词：聚酰亚胺 聚醚砜 聚苯硫醚 相容性 界面 共混体系 聚醚醚酮 

分 类 号：O631.21[理学—高分子化学] O633[理学—化学]