ZHANG Hailiang, XIAO Jun, FAN Zhong, WANG Xiayu. SYNTHESIS AND CHARATERIZATION OF BLOCK COPOLYMERS WITH POLYCARBONATE, 4 HYDROXBENZOIC ACID, 1,6 HEXANEDIAL AND TEREPHTHALIC ACID[J]. Acta Polymerica Sinica, 1997,(6):721-725.
ZHANG Hailiang, XIAO Jun, FAN Zhong, WANG Xiayu. SYNTHESIS AND CHARATERIZATION OF BLOCK COPOLYMERS WITH POLYCARBONATE, 4 HYDROXBENZOIC ACID, 1,6 HEXANEDIAL AND TEREPHTHALIC ACID[J]. Acta Polymerica Sinica, 1997,(6):721-725.DOI:
Block copolymers containing different compositions of terephthaloyl bis(4 oxy benzoyl) (triad) mesogen and polycarbonate(PC) units were synthesized by polycondensation of two oligomers. The structure thermal properties and crystallization behaviour of the block copolymers were investigated by IR
POM
DSC
WAXD. Thermotropic liquid crystalline nematic phase of these block copolymers were identificd by DSC and POM with a hot stage
It is shown that for the copolymers no phase separation at lower temperature and biphase behaviour above 280℃ is observed
The copolymers are crystalline polymers similar to HTH-6
The crystallinity measured by DSC decreases with decreasing HTH-6 content
The rate of crystallization is affected bu PC content.