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pH Control for Dyebath Reuse in Dyeing of Polyamide with Binary Mixtures of Acid Dyes  

Koh, Joonseok (Fiber and Textile R&D Center, Hyosung Corporation)
Park, Sang Hyuck (School of Materials Science and Engineering, College of Engineering, Seoul National University)
Shim, Goo Hwan (School of Materials Science and Engineering, College of Engineering, Seoul National University)
Cho, Dae Hwan (Fiber and Textile R&D Center, Hyosung Corporation)
Kim, Jae Pil (School of Materials Science and Engineering, College of Engineering, Seoul National University)
Publication Information
Fibers and Polymers / v.5, no.2, 2004 , pp. 110-116 More about this Journal
Abstract
Hydrolyzable organic esters were compared with ammonium sulphate as an acid donor for the pH control in dye-bath-reuse system of acid dyes mixtures. The ability of pH control, levelness, dyeing properties and reproducibility in dye-bath-reuse system were investigated comparatively. Hydrolyzable organic esters showed higher exhaustion and color yield than ammonium sulphate. In addition, hydrolyzable organic ester exhibited very low conductivity less than 0.5 mS, while ammonium sulphate give high conductivity. However, we could not observe any difference in levelness of dyed samples between two kinds of acid donors in laboratory scale dyeing. Over 10 cycles of reuse, hydrolyzable organic esters showed higher reproducibility than ammonium sulphate. No deterioration of the color fastness and levelness occurs over 10 cycles of reuse.
Keywords
Hydrolyzable organic ester; Acid donor; pH control; Dyebath-reuse;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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