应用化学 ›› 1992, Vol. 0 ›› Issue (1): 21-26.

• 研究论文 • 上一篇    下一篇

PEO/PVP共混体系结晶行为

薛小芙, 李丽霞, 张宏放, 莫志深   

  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
  • 收稿日期:1990-07-27 修回日期:1991-05-17 出版日期:1992-02-10 发布日期:1992-02-10
  • 基金资助:
    国家自然科学基金

CRYSTALLIZATION OF PEO/PVP BLENDS

Xue Xiaofu, Li lixia, Zhang Hongfang, Mo Zhishen   

  1. Laboratory of Polymer Physics, Institute of Applied Chemistry, Academia Sinia Changchun 130092
  • Received:1990-07-27 Revised:1991-05-17 Published:1992-02-10 Online:1992-02-10

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Tg,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。

关键词: 聚氧化乙烯, 聚乙烯基吡咯烷酮, 相容性

Abstract: 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.

Key words: poly (ethylene oxide), poly (vinyl pyrrolidone), compatibilty