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以对苯二甲酰氯,2 ,5二[4((S)2甲基丁氧基) 苯甲酰氧基] 对苯二酚和己二醇为单体,采用溶液共缩聚的方法,合成了一系列新的光活性串型液晶共聚物.共聚物通过GPC、DSC、TG、WAXD、偏光显微镜和旋光仪等方法表征.发现所有的共聚物加热至各自的熔点以上都能形成液晶态,在液晶态可以观察到沙地织构或破碎焦锥织构.通过变温X射线衍射证明它们为手性近晶C(S*C) 相.所有共聚物的熔点( Tm) 和液晶态清亮点( Ti) 随共聚物中己二醇用量的改变呈规律性变化.共聚物有很高的旋光性,在合成反应中旋光性保持.
To terephthaloyl chloride, 2,5-bis [4 ((S) 2 methylbutoxy) benzoyloxy] hydroquinone and hexanediol as monomers, using solution copolycondensation Method, a series of new photoactive string type liquid crystal copolymers were synthesized. Copolymers were characterized by GPC, DSC, TG, WAXD, polarized light microscopy and polarimetry. It was found that all the copolymers heated to their melting point above the liquid crystal state can be formed in the liquid crystal state can be observed sand texture or crushed pyramidal texture. They were proved to be chiral smectic C (S * C) phases by temperature-programmed X-ray diffraction. The melting point (Tm) and clearing point (Ti) of all the copolymers changed regularly with the amount of hexanediol in the copolymer. Copolymers have very high optical activity and are optically active in the synthesis reaction.