【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。更多还原

【Abstract】 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.更多还原