Citation: ZHANG Guoyao, YI Guozheng, LIU Dong, WU Liheng. CRYSTALLIZATION BEHAVIOR OF A THERMOTROPIC LIQUID CRYSTAL COPOLYESTER*[J]. Chinese Journal of Polymer Science, ;1993, 11(2): 109-114. shu

CRYSTALLIZATION BEHAVIOR OF A THERMOTROPIC LIQUID CRYSTAL COPOLYESTER*

ZHANG Guoyao ^{**，易国桢，刘东，吴立衡} ,
YI Guozheng ,
LIU Dong ,
WU Liheng

Received Date: 25 December 1991

A thermotropic liquid crystal copolyester resin based on p-hydroxybenzoic acid, 2, 6-naphthoic acid, hydroxyquinone and PET was synthesized by melt condensation and studied. The results based on DSC and X-ray diffraction indicated that there were a rapid and a slow crystallization processes for the copolyester at certain conditions. A critical temperature was suggested, below which the slow crystallization could hardly happen. Above the critical temperature the extent of the slow crystallization process depended not only on annealing temperature but also on the annealing time.A fine crystal structure with high melting point and narrow diffraction peak was formed under favorable conditions.
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