摘要
合成了一种新的含介晶单元的烯烃单体，对－（4－烯丙氧基苯甲酰氧基）苯甲酸对－甲氧基苯酚酯。将这种单体与聚甲基氢硅氧烷进行了硅氢化反应，合成了一种新的聚硅氧烷酯类液晶（PMMS）。用IR和^1H-NMR对合成产物的结构进行了表征，确证了聚合物液晶的梳形结构以及硅氢化反应的完全程度，发现这种PMMS含有13％的α－加成侧链。借助DSC曲线测出了它们的相变温度。
A new olefin monomer containing mesmorphic group has been synthesized. It is P-(4 - allyloxybenzoyl oxyl) benzoic acid p - methoxy phenic ester. The hydrosilation of the monomer and pelyntethylhydrosiloxane leads to a new liquid - crystalline polysiloxane (PMMS). We determined the comb-like structure and the complete extent of the reaction by IR and1H-NMR. It is found that PMMS contains 13% α-additive side chain. The phase transition temperature is determined by DSC measurements.
