新型环氧树脂基液晶光定向层材料的合成与性能研究  

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

作　　者：于海峰[1] 白鹤[1] 连彦青[1] 王晓工[1] 刘德山[1] 

机构地区：[1]清华大学化工系,材料科学与工程研究院,北京100084

出　　处：《高等学校化学学报》2003年第1期165-168,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :5 0 10 30 0 5 )资助

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 ( 1 H NMR)、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 .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.

关 键 词：合成 性能 光定向层材料 液晶取向 环氧树脂 线性偏振光聚合 液晶显示器 

分 类 号：TN141.9[电子电信—物理电子学] O633.13[理学—高分子化学]