Abstract
Abstract: This study optimizes dyeing conditions for polyamide-imide fabric using cationic dyes. Dyeing and fastness characteristics of polyamide-imide fabric were investigated with three cationic dyes and 2-hydroxyacetophenone as a swelling agent under various dyeing conditions such as dye and swelling agent concentrations, dyeing temperature and time, pH of dye bath. The dyeing properties were evaluated in terms of dye exhaustion, K/S value and color fastness. The optimized dyeing temperature and time were 130℃ for 90 min for the dyes. Under weak acidic conditions in the range pH 5 to 7, the exhaustion of cationic dyes could be enhanced leading to higher adsorption. Wash and rubbing fastness properties were generally good, while light fastness was slightly low, which can be attributed to the poor photo-stability of the cationic dyes. Keywords: polyamide-imide fiber, cationic dyes, swelling agent, exhaustion, K/S value, color fastness † Corresponding author: Sung Min Park (sokuri40@dyetec.or.kr)ⓒ2015 The Korean Society of Dyers and Finishers.All rights reserved. TCF27-4/2015-12/301-308
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