The effect of dye structure on the dyeing and optical properties of dichroic dyes for PVA polarizing film

被引:24
作者
Chang, Jae Bok [1 ]
Hwang, Jong Hak [1 ]
Park, Jong S. [2 ]
Kim, Jae Pil [1 ]
机构
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea
[2] Dong A Univ, Dept Polymer & Text Ind, Pusan 604714, South Korea
关键词
Dichroic dyes; PVA; Polarizing films; Optical property; Dichroic ratio; Intermolecular interaction; POLY(VINYL ALCOHOL); MOLECULAR-WEIGHT; COMPLEX FILM; PYRIDINE; TRANSITION; BEHAVIOR;
D O I
10.1016/j.dyepig.2010.08.007
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The dyeing behaviour and optical properties of four novel dyes in PVA polarizing films were determined in terms of the linearity hydrogen bonding ability intermolecular interaction and transition moment The linearity and H-bonding ability of the dyes were the dominant factors in terms of both the substantivity and orientation in PVA films which in turn determined the dichroic ratios of the polarizing films Dye adsorption and optical anisotropy of the dyes were further affected by the substituents within the dyes The difference in the electrostatic interactions of the substituents within the dyes also had an influence on dye-uptake Moreover charge transfer within the dye molecules was reflected in higher dichroic ratios of the dyed polarizing film (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码:366 / 371
页数:6
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