高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (9): 1820.

• 研究快报 • 上一篇    下一篇

窄分布聚丙烯的部分解缠结及其流变性能

孙清1, 邹业奎1, 薛奇1, 肖正刚1, 高云1, 胡友良2   

  1. 1. 南京大学化学化工学院高分子科学与工程系, 南京 210093;
    2. 中国科学院化学研究所工程塑料国家重点实验室, 北京 100080
  • 收稿日期:2002-03-15 出版日期:2002-09-24 发布日期:2002-09-24
  • 通讯作者: 薛奇(1945年出生),男,教授,博士生导师,主要从事高分子溶液结晶和导电高分子研究.E-mail:xueqi@nju.edu.cn. E-mail:xueqi@nju.edu.cn.
  • 基金资助:

    国家自然科学基金(批准号:2997401490103036);中国石油化学总公司资助

Partially Disentanglement of Mono-dispersed Polypropylene and Its Property in the Melt

SUN Qing1, ZOU Ye-Kui1, XUE Qi1, XIAO Zheng-Gang1, GAO Yun1, HU You-Liang2   

  1. 1. Department of Polymer Science & Engineering, Nanjing University, Nanjing 210093, China;
    2. State Key Laboratoryof Engineering Plastics, Instituteof Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2002-03-15 Online:2002-09-24 Published:2002-09-24

PDF (PC)

被引次数

5

关键词: 茂金属催化聚丙烯, 解缠结, 流变性能

Abstract: When mono-dispersed polypropylene was recovered from liquid paraffin, a solvent of large molar size, at a concentration more than C*, partially disentangled polypropylene was obtained. The modified polypropylene has a relatively high crystallinity. Furthermore, it has a lower apparent viscosity(ηa) and shear stress(τ) than that of the control samples at the same shear rate(γ). The mechanical properties of the modified polypropylene are almost unchanged, which cannot be found in any other method of modifying the rheological properties of polymer.

Key words: Motallocene-catalyzed polypropylene, Disentanglement, Rheological property

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