摘要
利用先合成复合单体,然后进行溶液缩聚的方法制备了含三芳香酯介晶单元组的芳脂族规则共聚酯,介晶单元的中心苯环分别为氯代/甲基取代/苯基取代。用热台偏光显微镜、DSC和X射线衍射研究了所得共聚酯的液晶行为,并重点研究了取代基对相变温度及液晶态稳定性的影响。
Regular aromatic-aliphatic copolyesters in which there are singer substituents (Cl, CH3 or C6H5) on the mesogenic groups were synthesized by solution polymerization. The thermo-tropic liquid crystalline properties of the copolyesters were investigated by polarized microscope with hot stage, DSC and X-ray diffraction. Particular consideration was given to the substituent effects on the temperatures of phase transition and stabilities of mesogenic phase.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1991年第4期30-34,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
取代基
芳酯族
共聚酯
液晶
聚酯
substituent effects,regular aromatic-aliphatic copolyesters,liquid crystalline properties.
