Syntheses of Novel Side-chain Liquid Crystalline Ionomers and Measurements of Electro-rheological Effect of the Ionomers

合成了不含金属离子的侧链聚合物液晶，并对其电流变性能进行了测试。聚合物以硅氧烷链为主链，侧链上含有介电各向异性正的介电基团。所有合成的样品都显示出液晶性。其中一种材料表现出明显的电流变效应。在一些会议和会议上介绍了所获得的结果。合成了侧链液晶离聚体。为了避免提纯困难，将侧链末端的羧基改为乙酯基团。通过碱解将金属离子引入到酯基部分。最后得到了三种不同金属离子含量的样品，没有进行电流变测试。这些测量将在下一项研究计划中进行。

Side-chain polymer liquid crystals in which no metal ions were included were synthesized and its electro-rheological measurements were carried out. The polymers had siloxane chain as a backbone and had mesogenic groups having positive dielectric anisotropy in the side-chain. All samples synthesized here showed liquid crystallinity. One of them indicated remarkable electro-rheological effect. The results obtained were presented at a few meetings and conferences.Side-chain liquid crystalline ionomers were synthesized. In order to prevent the difficulties of the purification, terminal carboxylic groups in the side-chain were changed into ethyl ester ones. Metal ions were introduced at the ester parts by alkaline hydrolysis. Finally three samples having different contents of the metal ions were obtained.No electro-rheological measurements were made. The measurements will be performed in a next research program.