PET/PEN扩链反应共混的研究Ⅳ.等温结晶动力学  

Study on PET/PEN Chain Extension Reactive Blending Ⅳ.the Isothermal Crystallization Kinetics

作　　者：杨海华[1] 马敬红[1] 梁伯润[1] 姜润喜[2] 任夕娟[2] 

机构地区：[1]东华大学材料学院,上海200051 [2]仪征化纤股份有限公司产品技术开发中心,江苏仪征211900

出　　处：《合成技术及应用》2001年第1期1-5,共5页Synthetic Technology & Application

基　　金：国家自然科学基金资助项目! (2 97740 2 3 )

摘　　要：用差示扫描量热法 (DSC)研究了热历史对 PET/PEN反应性共混物的熔体结晶行为的影响 ,并进行了等温结晶动力学的测定。结果表明 ,由于加热过程中酯交换反应的影响 ,而导致共聚酯序列结构的变化 ,致使熔体结晶行为对热历史极其敏感 ,其结晶动力学参数的变化也与之密切相关。The effect of thermal history on the melt crystallization behavior of PET/PEN reactive blends were studied by DSC. And we further researched the isothermal crystallization kinetics. The results show that during the heating, the transesterification between PET and PEN will be continued and lead to the change of sequence structure. So that the melt crystallization behavior is sensitive to the thermal history,also does the parameters of isothermal crystallization kinetics.

关 键 词：聚酯 PET PEN 反应性共混 等温结晶动力学 扩链反应 

分 类 号：O631.12[理学—高分子化学]