Synthesis and mesomorphic behaviour of some aromatic polyesters |
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Authors: | Wang Xueqiu Wu Hojung Li Shijin |
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Affiliation: | a Department of Polymer Materials Science and Technology, East China University of Chemical Technology, Shanghai, P.R. China |
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Abstract: | Six new aromatic polyesters were synthesized by the phase-transfer catalytic polycondensation. The polymers obtained were characterized by infra-red, X-ray diffraction, D.S.C., depolarized light intensity and polarizing microscope. Poly(p,p'-hydroquinone-1,4-phenylene dioxyacetate) and poly(p,p'-hydroquinone-1,4,7-trioxaheptamethylene dibenzoate) were found to be thermotropic liquid crystals but related polyesters are not. The results are discussed on the basis of the thermodynamic data obtained. |
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