高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (6): 867.

• 论文 • 上一篇    下一篇

固相缩聚PET等温结晶动力学

李力庆1, 周卫华2, 汤心颐3   

  1. 1. 北京化工研究院加工部, 北京, 100013;
    2. 北京服装学院;
    3. 吉林大学
  • 收稿日期:1991-06-04 出版日期:1992-06-24 发布日期:1992-06-24
  • 通讯作者: 李力庆

The Isothermal Crystallization Kinetics of PET Under Solid State Poly condensation

LI Li-qing1, ZHOU Wei-hua2, TANG Xin-yi3   

  1. 1. Beijing Research Ins. of Chem. Ind., Beijing, 100013;
    2. Beijing Clothing College;
    3. Jilin University
  • Received:1991-06-04 Online:1992-06-24 Published:1992-06-24

PDF (PC)

被引次数

16

摘要： 高聚物等温结晶动力学方面的研究者甚多[1～3],由熔融缩聚制备的不同分子量PET的等温结晶动力学及几种不同缩聚催化体系固相缩聚PET的等温结晶动力学已有报道.本文采用一个修正的Avrami方程[5,6]对固相缩聚PET样品进行系统的等温结晶动力学研究.

关键词: 固相缩聚, PET, 等温结晶动力学

Abstract: The present paper covers the isothermal crystallization kinetics of PET with different mol.wt.that were got by solid state polycondensation.The experimental result shows that in the case of solid state polycondensation no matter whether the crystallization process begins from the melt state or from the glass state, the isothermal crystallization process in later stage can be described well by modified Avrami equation.t0 (the collision time of spherulites), t1/2 as well as the isothermal crystallization rate are discussed.Furthermore, the influences of mol.wt.of PETand temperature on the crystallization rate was also studied.The results also show that the crystallization rules of PETgot from solid state polycondensation are basically the same as that of samples got from melt polycondensation.

Key words: Solid state polycondensation, PET, Isothermal crystallization kinetics

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