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聚酯/热致液晶聚合物体系的非等温结晶动力学研究
NON ISOTHERMAL CRYSTALLIZATION KINETICS OF POLYESTER BLENDS CONTAINING A THERMOTROPIC LIQUID CRYSTALLINE POLYMER
【摘要】 热致性液晶共聚酯PET/60PHB组分对PET及PBT在两种共混体系中的非等温结晶行为的影响用DSC方法进行了研究,并用Ozawa方法处理了动力学数据。随共混体系中LCP含量的增加,PET的Avrami指数n趋于降低而PBT的n值趋于增加,表明在非等温结晶条件下,对不同组成的共混物体系有着不同的成核和晶体生长的机理。
【Abstract】 The effect of the thermotropic copolyester of PET/60 PHB on the non isothermal crystallization behavior of both the PET and PBT in the blends has been studied by DSC method. The kinetic data was treated by Ozawa approach. With increasing the content of LCP in the blends the values of Avrami exponent n decrease for PET whereas increase for PBT, implying a different mechanism of nucleation and growth of crystal occured during the non isothermal crystallization conditions.
- 【文献出处】 高分子材料科学与工程 ,POLYMERIC MATERIALS SCIENCE & CNGINEERING , 编辑部邮箱 ,1997年05期
- 【分类号】O633.14
- 【被引频次】13
- 【下载频次】135