Effects of UV-irradiation on the nonisothermal crystallization kinetics of polypropylene

被引：4
|
作者：
Tang, LX [1 ]
Yan, MG
Qu, BJ
机构：
[1] Hefei Univ Technol, Dept Polymer Sci & Engn, Hefei 230009, Peoples R China
[2] Univ Sci & Technol China, Dept Polymer Sci & Engn, Anhua 230026, Peoples R China
[3] Anhui Univ, Sch Chem, Dept Polymer Sci & Engn, Hefei 230039, Anhui, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2006年 / 99卷 / 05期
关键词：
UV-irradiation; photodegradation; polypropylene; nonisothermal crystallization kinetics;
D O I：
10.1002/app.22686
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The influences of UV-induced photodegradation on the nonisothermal crystallization kinetics of polypropylene (PP) were investigated by differential scanning calorimetry. The Avrami analysis modified by Jeziorny, Ozawa method, and a method modified by Liu were employed to describe the nonisothermal crystallization process of unexposed and photodegraded PP samples. Kinetics studies reveal that the rates of nucleation and growth may be affected differently by photodegradation. A short-term UV-irradiation may accelerate the overall nonisothermal crystallization process of PP, but a long-term UV-irradiation should impede it.
引用
收藏
页码：2068 / 2075
页数：8
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