有机/无机杂化体系中聚氧化乙烯的受限结晶  

CONFINED CRYSTALLIZATION BEHAVIOR OF PEO IN ORGANIC INORGANIC HYBRID SYSTEM

作　　者：蒋世春[1] 董德文[1] 姬相玲[1] 安立佳[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,吉林长春130022

出　　处：《高分子材料科学与工程》2001年第2期141-145,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金;高分子凝聚态基本物理问题资助项目

摘　　要：通过 sol- gel技术合成了聚氧化乙烯 ( PEO)和二氧化硅 ( Si O2 )的有机 -无机杂化材料 ,通过 DSC和WAXD方法测试了杂化样品中 PEO的结晶度、结晶结构和 ( 12 0 )晶面的微晶尺寸 ,说明了Poly(ethylene oxide)(PEO) and silica (SiO 2) organic inorganic hybrid materials have been synthesized by sol gel approach. The crystallization behavior of PEO in hybrid system has been investigated by DSC and WAXD methods. The result shows that the mass percentage of crystalline PEO reduces with the increase of silica in PEO and SiO 2 organic inorganic hybrid samples, PEO is not crystallizable when the concentration of PEO is lower than 50 mass% in this system. The DSC and WAXD results show that the crystalline behavior of PEO in PEO/SiO 2 hybrid system has been rigid confined, the reason is that PEO is absorbed by the micropores silica.

关 键 词：聚氧化乙烯 二氧化硅 杂化 有机/无机杂化体系 示差扫描量热法 广角X射线衍射 受限结晶行为 

分 类 号：TQ326.9[化学工程—合成树脂塑料工业] O633.11[理学—高分子化学]