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Citation: Wang Yong, Wu Dacheng, Li Ruixia, Xie Xinguang. Liquid Crystal Structures and Phase Transitions of Copolyesters[J]. Chinese Journal of Applied Chemistry, ;1994, 11(3): 36-39. shu

Liquid Crystal Structures and Phase Transitions of Copolyesters

1.
Textile College, Chengdu University of Science and Technology, Chengdu 610065

Received Date: 18 September 1993
Available Online: 6 December 1993

The strtictures and phase transitions of thermotropic liquid crystalline aromatic copolyesters based on p-hydroxy-benzoic acid (PHB),terephthalic acid (TPA) and bisphenol A (BPA) were studied by DSC,WAXD,and hot stage polarized microscopy.The effects of annealing and shearing on the microstructures and seqtience structures of the copolyesters were discussed emphatically,The two glass transition temperatures occurred in sample with 50% PHB bave been discussed.
- thermotropic liquid crystalline copolyester,
- microstructure,
- oriented structure,
- glass transition
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