氢键自组装侧链液晶聚合物的制备及性能

Preparation and properties of hydrogen-bonding self-assembly side-chain liquid crystalline polymers

为了获得氢键自组装液晶聚合物，制备了两种单体M，1和M2，通过调节单体M1和M2的摩尔比，利用氢键自组装方法制备得到了一系列侧链液晶聚合物．利用红外光谱仪（FTIR）、差示扫描量热仪（DSC）和偏光显微镜（POM）测试了氢键自组装侧链液晶聚合物的液晶性能．结果表明，P3和P5液晶聚合物在2510cm^-1和1920cm^-1处出现了氢键的吸收峰，而P3、P4和P5液晶聚合物均具有两个熔融吸收峰．P1-P5液晶聚合物具有Grandjean织构，为典型的胆甾相；P6液晶聚合物具有明显的球形织构，为典型的向列相．

In order to obtain the hydrogen-bonding self-assembly liquid crystalline polymer, two monomers M1 and M2 were prepared, and a series of side-chain liquid crystalline polymers were prepared with the hydrogen-bonding self-assembly method through adjusting the molar ratio of M1 and M2 monomers. The liquid crystalline properties of hydrogen-bonding self-assembly side-chain liquid crystalline polymers were investigated with infrared spectroscopy （FTIR）, differential scanning calorimeter （DSC） and polarized light microscope （POM）. The results show that the hydrogen-bonding absorption peaks of P3 and P5 liquid crystalline polymers appear at 2 510 cm-1 and 1 920 cm-1 , and the P3, P4 and P5 liquid crystalline polymers have two melting absorption peaks. The P1 to P5 liquid crystalline polymers have Grandjean texture, and are the typical cholesteric phases, while the P6 liquid crystalline polymer has obvious spherical texture, and is the typical nematic phase.