聚氧化乙烯-聚苯乙烯-聚氧化乙烯三嵌段共聚物/聚苯醚共混物的相容性和结晶行为  

THE COMPATIBILITY AND CRYSTALLIZATION BEHAVIOR OF PEO-PS-PEO TRIBLOCK COPOLYMER/PPO HOMOPOLYMER BLENDS

作　　者：石晓虹[1] 刘立志[1] 方天如[1] 姜炳政[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开放实验室,长春邮政编码130022

出　　处：《高分子学报》1993年第4期398-402,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金

摘　　要：本工作对聚氧化乙烯-聚苯乙烯-聚氧化乙烯(PEO-PS-PEO)三嵌段共聚物与聚苯醚(PPO)均聚物共混物的相容性及结晶行为进行了研究。结果表明,共混体系的相容性与嵌段共聚物中苯乙烯段的含量有关,PS含量越高,PPO与共聚物PS段的相容性越好。共混体系的结晶行为也明显不同于一般均聚物共混体系。在DSC降温结晶过程中最多可出现三个结晶峰。The compatibility and crystallization behavior of ethylene oxide-styrene-ethylene oxide triblock copolymer (PEO-PS-PEO)/Polyphenyleneoxide (PPO) blends have been studied. The higher the PS content in PEO-PS-PEO copolymer, the better the compatibility of its mis-ture with PPO homopolymer. From the crystallization point of view, PEO-PS-PEO copolymer in the blends crystallizes in a very different way with blend composition, and the crystallization features, such as many crystallization peaks in DSC thermograms obtained during cooling, are really different from those of homopolymer blends.

关 键 词：嵌段共聚物 共混 相容性 结晶行为 

分 类 号：O631[理学—高分子化学]