Thermodynamics of adsorption of laccaic acid on silk

被引：72

作者：

Kongkachuichay, P ^{[1
]}

Shitangkoon, A

Chinwongamorn, N

机构：

[1] Kasetsart Univ, Fac Engn, Dept Chem Engn, Bangkok 10900, Thailand

[2] Chulalongkorn Univ, Fac Sci, Dept Chem, Bangkok 10330, Thailand

来源：

DYES AND PIGMENTS | 2002年 / 53卷 / 02期

关键词：

adsorption isotherms; lac dyeing; silk dyeing; thermodynamics; memecylon;

D O I：

10.1016/S0143-7208(02)00014-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The hybrid-race silk yarn was dyed till equilibrium with natural lac dye (laccaic acid) and the thermodynamics of dyeing were investigated. The adsorption isotherm obtained was identified to be a Langmuir type. When the temperature increased, the partition ratio and the standard affinity decreased drastically, The values of heat of dyeing and entropy of dyeing were - 13.20 kcal/mol and-0.03 kcal/mol/K, respectively, The effect of memecylon used as a mordant on silk dyeing with lac dye was also studied. It revealed that using memecylon promoted the adsorption of laccaic acid on silk and increased the attraction between iaccaic acid and silk surfaces. (C) 2002 Published by Elsevier Science Ltd.

引用

页码：179 / 185

页数：7