PET/TLCP扩链反应性共混物的热性能研究

研究了聚对苯二甲酸乙二酯（PET）和热致性液晶共聚酯60PHB／PET（含60％摩尔对羟基苯甲酸）体系在少量扩链剂双（2－Wu唑啉）（BOZ）存在下的反应性共混条件对共混物的玻璃化转变温度（Tg)、冷结晶温度（Tcc)、熔体结晶温度（Tmc)以及熔点（Tm)等热性能的影响。结果表明，BOZ对酯交换的促进作用使Tg升高；延长共混时间和提高共混温度使Tcc升高，Tmc和Tm下降，并受到BOZ加入量的显著影响。

Study on thermal behavior of PET/TLCP chain extended reactive blends

This paper studied the effects of reactive blending conditions on the thermal behavior of the system composed of poly(ethylene terephthalate) (PET) and thermotropic liquid copolyester (containing 60 mol % p - hydroxyl benzoic acid) (TLCP)in the presence of bis(2 - oxazoline) (BOZ)in small quantity, including glass transition temperature (Tg), cold crystallization temperature(Tcc) , melt crystallization temperature(Tmc) and melt point (Tm) . The differential scanning calorimetry(DSC)results showed that the Tg increased as a result of the transesterification of PET and LCP accelerated by BOZ. The Tcc was raised while the Tmc, and Tm was lowered as the blending time and temperature was increased. And all of the parameters were significantly affected by BOZ.