应用化学 ›› 1994, Vol. 0 ›› Issue (3): 62-65.

• 研究论文 • 上一篇    下一篇

弹性体型聚氨酯和聚碳酸酯共混物的形态结构

阎荣江, 李光, 杨秉新   

  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:1993-06-08 修回日期:1993-12-16 出版日期:1994-06-10 发布日期:1994-06-10

Morphologic Structure of Blends of Elastomeric Polyurethane with Polycarbonate

Yan Rongiiang, Li Guang, Yang Bingxin   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022
  • Received:1993-06-08 Revised:1993-12-16 Published:1994-06-10 Online:1994-06-10

摘要: 用DSC、WAXD和SAXS研究了溶液共混的弹性体型聚氨酯(PU)/聚碳酸酯(PC)共混物的结构。结果表明,PU/PC为部分相容体系;共混过程中,溶剂DMF的诱导作用使PC形成结晶,其长周期与PU硬段形成微相的长周期相近。

关键词: 聚碳酸酯, 聚氨酯, 共混, 相容性, 形态结构

Abstract: Structure of elastomeric polyurethane(PU)/polycarbonate (PC) blends obtained ria dissolvation in DMF has been studied by DSC,wide angle X-ray diffraction(WAXD), and small angle X-ray scattering(SAXS).In the blends,the glass transition temperature of PU increases with increasing the content of PC,the melting point of PC crystals is lower than that of pure PC. All the samples have a peak at the close positions on their SAXS curves. The results show that PU and PC are partially miscible and the long period of PU′s micro-phases is close to that of the solvent-induced crystal of PC.

Key words: polycarbonate, polyurethane, blend, miscibility, morphological structure