热致性液晶聚酯的合成及其性质研究

热致性液晶聚酯的合成及其性质研究 SYNTHESIS AND PROPERTIES OF THERMOTROPIC LIQUID CRYSTALLINK POLYESTERS 刘振华 Liu Zhenhua 1 2 3 first-author 卓仁禧 Zhuo Renxi 1 2 3 邓威 Den Wei 1 2 3 陈其明 Chen Qiming 1 2 3 武汉大学化学系 武汉大学化学系 Department of Chemistry, Wuhan University Department of Chemistry, Wuhan University 武汉大学化学系,武汉 武汉大学化学系,武汉 ,430072 ,430072 本文报导六个新的热致性液晶聚酯的合成。用差示扫描量热分析和热台偏光显微镜研究了它们的液晶性质。结果表明,含硅氧烷或亚甲基柔性间隔基的聚酯呈向列相液晶,既含硅氧烷又含亚甲基的聚酯不呈现稳定的液晶态。 Six new thermotropic liquid crystalline polyesters were synthesized by the poylcondesation of diacid chloride and aromatic dihydroxy compound in 1,1,2,2-tetrachloroethane. Their liquid crystalline properties were studied by DSC and polarized light microscopy with a hot-stage. The results showed that polyesters containing disiloxane or polymethylene flexible spacers formed nematie phase, and polyesters containing both disiloxane and polymethylene flexible spacers have no stable liquid crystalline state. 热致性聚合物 液晶聚酯 液晶基元 柔性间隔基 thermotropic polymer liquid crystalline polyester mesogenic unit flexible spacers O633 1993-02-01 2021-04-01 2