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利用聚乙烯醇羟基的给质子能力和苯乙烯吡啶上的氮原子的受质子能力形成的氢 ,通过分子自组装合成了聚乙烯醇侧链液晶高分子 .该物质是以聚乙烯醇为高分子的主链 ,以苯乙烯基吡啶液晶基元作为侧链的热致液晶 .该侧链液晶高分子具有较低的相转变温度和较宽的液晶温度范围 ,通过氢键连接液晶基元和聚合物主链相对减弱了聚合物与液晶基元之间的相互作用 ,更有利于两者的空间和极性效应的结合
Polyvinyl alcohol side-chain liquid crystal polymer was synthesized by molecular self-assembly using the proton-donating ability of hydroxyl groups of polyvinyl alcohol and the proton-capable hydrogen of nitrogen atom of styryl pyridine, which was prepared by using polyvinyl alcohol as polymer Of the main chain, the styrylpyridine liquid crystal motif as a side chain of the thermotropic liquid crystal The side chain of liquid crystal polymer has a lower phase transition temperature and a wider range of liquid crystal temperature, the liquid crystal via hydrogen bonding and polymerization The backbone of the host relatively weakens the interaction between the polymer and the liquid crystal element and is more conducive to the combination of space and polarity effects