高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (3): 486.

• 研究简报 • 上一篇    下一篇

拉伸和退火诱导间同立构聚丙烯的构象转变

张斌, 杨德才   

  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:1998-03-18 出版日期:1999-03-24 发布日期:1999-03-24
  • 通讯作者: 杨德才
  • 作者简介:张斌,男,26岁,硕士研究生.
  • 基金资助:

    国家自然科学基金(批准号:S049316Y);国家科委国家基础性研究重大关键项目资助

Conformation Transformation of Syndiotactic Polypropylene Induced by Stretching and Annealing

ZHANG Bin, YANG De-Cai   

  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1998-03-18 Online:1999-03-24 Published:1999-03-24

摘要: 90年代以来,随着锆和铪茂金属催化剂的出现,人们已能得到高立构度的sPP[1].由于sPP具有无毒,软硬适中,尤其是在高度结晶时仍具有很好的透明性等优点,越来越受到人们的广泛注意.

关键词: 间同立构聚丙烯, 拉伸, 构象转变

Abstract: Conformation transformation of syndiotactic polypropylene(sPP) induced by stretching and annealing processes has been investigated by WAXD, IRand DSC. The results indicate that not only the quenched samples but also the isothermally crystallized samples can form the crystals with alltrans conformation by means of uniaxially stretching at room temperature. The alltrans conformation crystals are of metastability, which can transform to stable crystals with (TTGG)2helical conformation at higher annealing temperatures.

Key words: Syndiotactic polypropylene, Stretching, Conformation transformation

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