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合成了一种新型胆甾液晶单体(M1)和一种向列液晶单体(M2),通过与聚硅氧烷(PMHS)接枝共聚得到了系列侧链液晶聚合物P1~P6,通过傅立叶变换红外光谱(FT-IR)、差示扫描量热仪(DSC)、热失重分析(TGA)、偏光显微镜(POM)等手段对聚合物的结构、液晶性能及热性能进行了表征.随着胆甾液晶基元的减少,其玻璃化转变温度(Ta)、清亮点(Ti)逐渐降低.聚合物P1~P6均为胆甾型热致液晶,聚合物呈现出典型的胆甾液晶彩色Grand-jean织构、油丝及焦锥织构,并且颜色随温度升高发生变化.

参考文献

[1] Zhang BY.;Hu JS.;Zang BL.;Zhou AJ. .Synthesis and properties of side chain cholesteric liquid-crystalline polyacrylates containing two mesogenic groups[J].Journal of Applied Polymer Science,2003(8):1936-1941.
[2] Jian-She Hu;Bao-Yan Zhang;Ying-Gang Jia;Ying Wang .Structures and Properties of Side-Chain Cholesteric Liquid Crystalline Polyacrylates[J].Polymer Journal,2003(2):160-166.
[3] Hattori H.;Uryu T. .Synthesis and properties of photochromic liquid-crystalline copolymers containing both spironaphthoxazine and cholesteryl groups[J].Journal of Polymer Science, Part A. Polymer Chemistry,2000(5):887-894.
[4] Bin Tong;Yan Yu;Rongji Dai;Bao Yan Zhang;Yulin Deng .Synthesis and properties of side chain liquid crystalline ionomers containing quaternary ammonium salt groups[J].Liquid Crystals: An International Journal in the Field of Anisotropic Fluids,2004(4):509-518.
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