PEO/PVP共混体系结晶行为  

CRYSTALLIZATION OF PEO/PVP BLENDS

作　　者：薛小芙 李丽霞[1] 张宏放[1] 莫志深[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130022

出　　处：《应用化学》1992年第1期21-26,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：本文用WAXD、PLM、DSC方法研究了聚氧化乙烯(PEO)/聚乙烯基吡咯烷酮(PVP)共混体系的结晶行为,探索了两组分聚合物间相互作用及体系结晶度与非晶组分含量的关系。DSC研究表明PEO/PVP共混体系具有两个玻璃化转变温度,分别是纯组分的T_g,无相容性。应用Avrami和LH方程对其动力学参数进行了研究。偏光显微镜观察了共混物结构形态。The crystallization behaviour of poly (ethylene oxide)(PEO)/poly (vinyl pyrrolidone) (PVP) blends has been investigated by using wide angle X-ray diffraction, differential scanning calorimeter and polarization microsecope,PEO/PVP blends have two glass transition temperature indicating the incompatibility of PEO and PVP components. The growth rate of spherulites (G) and the kinetic rate constant (K) decreased with the increase of PVP content. It was found that some sorts of morphological structure of spherulites of PEO/PVP appeared in relation with the composition of the blends and temperature.

关 键 词：聚氧化乙烯 PEO/PVP 相容性 结晶 

分 类 号：O633.11[理学—高分子化学]