POLYAMIDE-TYPE HIGH PRETILT SURFACE - EFFECT OF SIDE-CHAIN STRUCTURE AND TYPE OF LIQUID-CRYSTALS ON THE GENERATION OF PRETILT ANGLE

被引：5
|
作者：
NOH, SH [1 ]
ARAKI, K [1 ]
SUGITANI, Y [1 ]
SENO, M [1 ]
机构：
[1] UNIV TOKYO,INST IND SCI,MINATO KU,TOKYO 106,JAPAN
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 241卷
关键词：
N-ARALKYLATED PPTA; LIQUID CRYSTAL ALIGNMENT FILM; PRETILT ANGLE GENERATION; SIDE CHAIN STRUCTURE;
D O I：
10.1080/10587259408029752
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Highly N-aralkylated poly(p-phenylene terephthalamide) (PPTA) with various substituents having benzyl units in their structures were synthesized in a high yield, and their properties as a liquid crystal alignment film were studied. Good liquid crystal alignment and pretilt angles of 0.5 to 8.1 deg were observed on the spin-coated polymer films after rubbing when a nematic liquid crystal, ZLI-2293 was used. The induced pretilt angle showed no correlation with the surface-free energy of the polymer film, but was strongly dependent on the structure of the side chain. The effects of the structural difference of the side chain and type of liquid crystals are discussed in more detail.
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页码：159 / 166
页数：8
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