高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (12): 2044.

• 论文 • 上一篇    下一篇

新型LLDPE的结晶行为及链结构

赵勇1, 杨德才1, D. C. Bassett2   

  1. 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;
    2. 英国雷丁大学汤姆森物理实验室
  • 收稿日期:1996-09-08 出版日期:1997-12-24 发布日期:1997-12-24
  • 通讯作者: 杨德才
  • 作者简介:赵勇, 男, 30岁, 助研.
  • 基金资助:

    国家科学技术委员会国家基础性研究重大关键项目

Crystallization Behavior of the Novel LLDPE and Its Molecular Characteristics

ZHAO Yong1, YANG De-Cai1, D. C. Bassett2   

  1. 1. Polym.Phys.Lab., C1angchun Institute of APPlied Chemistry, Academia Sinica, Changchun 130022;
    2. J.J.Thomson Physical Laboratory, University of Reading, Whiteknights, Reading RG6 6AF, UK
  • Received:1996-09-08 Online:1997-12-24 Published:1997-12-24

摘要: 研究了用单活性中心催化剂合成的新型乙烯-辛烯-1共聚物在不同条件下的结晶行为,表征了其支链分布.与普通支化聚乙烯相比,其支链分布均匀,不存在过长无支化链段,但并非单一分布,在小范围内有一定可变性.本工作进一步澄清了支链是否参予结晶这一有争议的问题.

关键词: 新型LLDPE, 结晶行为, 支链分布

Abstract: Crystallization behavior of the single-site catalysed ethylene-octene-1 copolymer(LLDPE) has been investigated.The results indicate that the distribution of branches in thenovel LLDPEis more homogeneous and regular than that in materials prepared with Ziegler-Natta catalysts.However, there is still some variability in inter-branch separation.Thework has confirmed that branches trend to be excluded from crystals formed by branchedpolyethylene, but it is dependent on branch distribution and crystallization dynamics.

Key words: Novel LLDPE, Crystallization behavior, Branch distribution

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