高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (3): 469.

• 论文 • 上一篇    下一篇

纤维素芳族酯热致液晶对PET结晶成核作用的研究

阮文红, 沈经炜, 李白千   

  1. 四川联合大学塑料工程系, 成都, 610065
  • 收稿日期:1996-11-12 出版日期:1998-03-24 发布日期:1998-03-24
  • 通讯作者: 阮文红,女,28岁,博士研究生,讲师.
  • 作者简介:阮文红,女,28岁,博士研究生,讲师.
  • 基金资助:

    国家自然科学基金(批准号:29374155)资助课题.

Studies on Nucleation of Cellulose Aromatic Ester Thermotropic Liquid Crystal on Polyethylene Terephthalate

RUAN Wen-Hong, SHEN Jing-Wei, LI Bai-Qian   

  1. Department of Plastics Engineering, Sichuan Union University, Chengdu, 610065
  • Received:1996-11-12 Online:1998-03-24 Published:1998-03-24

摘要: 用自制的热致液晶性纤维素芳族酯(CAE)作聚对苯二甲酸乙二醇酯(PET)的成核剂,研究了PET/CAE体系(CAE含量≤1%)在110~200℃温度范围内的等温结晶动力学特性.结果表明,CAE能显著加快PET结晶速率(Z),Z随结晶温度和CAE含量变化均有极大值Zmax(TC)和Zmax(WCAE),Zmax(TC)对应的温度Tmax随CAE含量增加而降低,CAE促进PET结晶的作用机理与普通成核剂不同.

关键词: 聚对苯二甲酸乙二醇酯(PET), 纤维素芳族酯, 热致液晶, 结晶动力学

Abstract: Using a self prepared cellulose aromatic ester(CAE) thermotropic liquid crystal as polyethylene terephthalate(PET) nucleating agent, the isothermal crystallizing kinetics characteristics of PET/CAE(CAEcontent≤1%) in the temperature range of 110~200 ℃ were investigated. The results show that CAEcan significantly accelerate crystallizing rate (Z) of PET, with the change of crystallizing temperature and CAE content, Zhas a maximum value Zmax (TC) and Zmax ( WCAE), the temperature Tmax corresponding to Zmax (TC) decreases with the increase of CAE content. The mechanism of CAE accelerating PET crystallization is different from that of common nucleating agent.

Key words: Polyethylene terephthalate(PET), Cellulose aromatic ester, Thermotropic liquid crystal, Crystallizing kinetics

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