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Surface free energy of chosen polyimides used for alignment of liquid crystals

机译：所选择的聚酰亚胺的表面自由能用于对准液晶

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摘要

According to classical method polyimides were obtained in two-step polycondensation process via 10% solutions of poly(amic acid)s in dimethylformamide (DMF). The indium tin oxide (ITO)-glass plates or glass plates were spin-coated with the 1% (w/w) poly(amic acid)s solutions and then the solvent was evaporated. The aligning polyimide layers were prepared by thermal imidization. Polyimide layers on indium tin oxide (ITO)-glass plates were prepared by thermal imidization at 250°C for 4 h. Their surface free energy and its components were determined. Polyimide films on soda glass with various degree of imidization were prepared by thermal treatment at 180°C, 200°C, 220°C and 250°C. Evaluation of rubbed polyimide layers wettability by four nematic liquid crystals (5CB, 6CB, 6CHBT and 8CHBT) was carried out.
机译：根据经典方法，通过在二甲基甲酰胺（DMF）中的10％的聚（AMIC酸）S的10％溶液中获得聚酰亚胺。氧化铟锡（ITO）玻璃或玻璃板用1％（w / w）聚（氨基酸）溶液旋涂，然后蒸发溶剂。通过热酰亚胺化制备对准的聚酰亚胺层。通过在250℃下热酰亚胺化制备氧化铟铟锡（ITO）玻璃玻璃的聚酰亚胺层4小时。确定它们的表面自由能及其组分。通过在180℃，200℃，220℃和250℃下热处理制备具有各种酰亚胺化的苏打玻璃上的聚酰亚胺薄膜。进行摩擦聚酰亚胺层润湿性，通过四个向列液晶（5cb，6cb，6chbt和8chbt）进行润湿性。

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