| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.689 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Polyamic acids for Alignment Films of Vertically Aligned LCD with good wettability |
| 초록 | A series of the polyamic acids (PAA-1) has been synthesized from cyclobutane-1,2,3,4-tetracarboxylic dianhydride and 4,4’-diaminodiphenylmethane and functional diamine, 4’-[12-(3,5-diaminophenoxy)dodecyloxy] biphenyl-4-carbonitrile for vertically aligned liquid crystal alignment layer with good spreading property. The inherent viscosities of the resulting PAAs measured in N-methyl-2-pyrrolidone were in the range of 0.2-1.0 dL/g, which decreased with the increase of the content of 4’-[12-(3,5-diaminophenoxy) dodecyloxy] biphenyl-4-carbonitrile. The spreading property of liquid crystals on the polyamic acids had been investigated and compared to those of the polyamic acid (PAA-2) prepared from 1-(3,5-diaminophenyl)-3-(1-octadecyl)-succinicimide with non-polar alkyl side chain. The spreading coefficient of liquid crystal on PAA-1 film ranged from 12.2 to 13.7, which was remarkably increased compared to those of PAA-2. We had also measured pretilt angle of liquid crystal onto the polyimide surface, which were shown high pretilt angle (＞89°) in spite of increasing of surface tension. Figure 1. Contact angle of liquid crystal on the PAA films (a) PAA-1 (b) PAA-2 |
| 저자 | 이미라1, 이윤정1, 하재두1, 홍성권2, 이미혜1 |
| 소속 | 1한국화학(연), 2충남대 |
| 키워드 | polyimide; LC; alignment layer |
