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Nonisothermal crystallization kinetics of radiation crosslinked polycarolactone
Author(s): ZHU Guangming, XU Shuogui, FEI Jingyin, QIN Ruifeng, LIANG Guozheng
Pages: 349-
355
Year: 2004
Issue:
6
Journal: JOURNAL OF RADIATION RESEARCH AND RADIATION PROCESSING
Keyword: 聚己内酯; 辐射交联; 非等温结晶行为; 动力学;
Abstract: 研究γ辐照对聚己内酯(Polycaprolaetone,PCL)非等温结晶行为的影响,利用Ozawa方程和莫志深方法对辐射交联PCL的非等温结晶过程进行了分析.结果表明,辐射交联PCL的结晶过程为异相成核的单轴生长模式,结晶速率变快,结晶度也有所增加.辐射对PCL的结晶过程影响较复杂,低剂量时,结晶活化能随剂量的增加而下降,更高剂量时,结晶活化能随剂量反而升高,由Kissinger方程计算出的结晶活化能为54-64 kJ/mol.
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