STUDIES ON MISCIBILITY AND MORPHOLOGICAL FEATURES OF BLENDS OF LC COPOLYESTER AND PET

作     者：谢萍 陈寿羲 沈德言 英新芳 金永泽 陆道惠 XIE Ping CHEN Shouxi SHEN Deyan YING Xinfang JIN Yongze and LU Daohui (Institute of Chemistry, Academia Sinica, Beifing)

作者机构：Institute of Chemistry Academia Sinica Beijing 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学(英文版))

年 卷 期：1988年第6卷第3期

页      面：274-281页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

主　　题：Blend Liquid Crystalline Copolyester PET Miscibility Morphological Feature Phase segregation Additive spectrum 

摘      要：The morphology of a special blend system composed of liquid crystalline aromatic random copolyester （LCP） and semiflexible polyester PET over the whole composition range has been studied by means of polarized microscope, density measurement, DSC, FTIR and SEM. Based on the microscopic observation, it is found that under suitable mechanical mixing condition, LCP may be rather homogeneously dispersed in the PET matrix, with the middle composition range of the contents of LCP at 30--70 wt % the anisotropic and isotropic phase segregation appears, while with LCP contents over 80 wt% the blends exhibit wholly anisotropie. The DSC thermographs of the melt-pressed and quenched films show single T?, Tcc and Tm. T? increases with increasing content of LCP and ap, proaches to the T? of pure LCP. The experimental results indicate that the two components of this blend system are miscible, there exist some specific interactions between them.