Surface free energy and pretilt angle on rubbed polyimide surfaces

被引：0

作者：

Ban, BS ^{[1
]}

Kim, YB ^{[1
]}

机构：

[1] Konkuk Univ, Liquid Crystal Res Ctr, Dept Chem, Div Nat Sci,Kwangjin Ku, Seoul 143701, South Korea

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1999年 / 74卷 / 02期

关键词：

surface free energy; pretilt angle; optical-phase retardation; liquid crystal display;

D O I：

10.1002/(SICI)1097-4628(19991010)74:2<267::AID-APP5>3.0.CO;2-#

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

To investigate surface free energy of rubbed polyimide surfaces as a function of the rubbing strength, we measured the contact angle of distilled water and methylene iodide on the polyimide surfaces. For this purpose, a main-chain-type and two side-chain-type polyimides were used. The dispersion force (gamma(d)) and the polar force (gamma (P)) Of the rubbed polyimide surfaces was measured. The rubbing induced polarity on the polyimide surfaces. Also, polar forces contributed to form a pretilt angle of liquid crystals on the rubbed polyimide surfaces. (C) 1999 John Wiley & Sons, Inc.

引用

页码：267 / 271

页数：5

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