高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 165.

• 论文 • 上一篇    下一篇

新型环氧树脂基液晶光定向层材料的合成与性能研究

于海峰, 白鹤, 连彦青, 王晓工, 刘德山   

  1. 清华大学化工系, 材料科学与工程研究院, 北京 100084
  • 收稿日期:2001-11-21 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 王晓工(1955年出生),男,博士,教授,博士生导师,主要从事具有光或光电功能性的高分子材料方面的研究.E-mail:wxg-dce@mail.tsinghua.edu.cn E-mail:wxg-dce@mail.tsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:50103005)资助

Synthesis and Characterization of a Novel Photo Alignment Layer for Liquid Crystal Based on Epoxy

YU Hai-Feng, BAI He, LIAN Yan-Qing, WANG Xiao-Gong, LIU De-Shan   

  1. Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2001-11-21 Online:2003-01-24 Published:2003-01-24

摘要: 经双酚A型环氧树脂与苯胺缩聚反应,制备含有羟基的先驱聚合物EP-AN,通过EP-AN上羟基与肉桂酰氯的酯化反应,制备了侧链带有肉桂酸酯基团的光敏聚合物EP-AN-CI.用核磁共振(1HNMR)、傅里叶红外光谱(FTIR)和热分析等手段确定了上述聚合物的结构与性能.用FTIR等方法表征了EP-AN-CI的光交联反应.经线性偏振光聚合技术(LPP)处理聚合物EP-AN-CI膜制备成液晶定向层,通过装配液晶盒和偏光显微镜观察表明,所制备的定向层具有很好的定向能力,该聚合物是一类具有潜在应用价值的新型液晶光定向层材料.

关键词: 光定向层, 液晶取向, 环氧树脂, 线性偏振光聚合

Abstract: The precursor EP-AN was synthesized by means of the polymerization between aniline and Biphenol-A epoxy which is industrial products. Then the cinnamate groups were attached to the chains of the hydroxyl-containing precursor to prepare EP-AN-CI, which is the potential photo alignment layer for liquid crystal. They were characterized by 1H-NMR, FTIR, and differential scanning calorimetry(DSC). EP-AN-CI was spin-coated on a ITO glass substrate from chloroform solution, resulting in a thin film, then though the linearly polarized polymerization(LPP) it was changed into photo alignment layer. LC cells of a 10 μm-thick were assembled via a capillary action. The photomocrographies were obtained which can be used to explain that EP-AN-CI can be applied in photo alignment layer.

Key words: Photo alignment layer, Liquid crystal alignment, Epoxy-resin, Linearly polarized polymerization

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