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Eco-friendly dyeing of poly(trimethylene terephthalate) with temporarily solubilized azo disperse dyes based on pyridone derivatives |
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| Authors: | Hae Kyoung Jang Song Jun Doh Jung Jin Lee |
| Affiliation: | (1) Fiber System Engineering Program, Division of Polymer System Engineering, Dankook University, Yongin, 448-701, Korea;(2) Fusion Technology R&D Division, Korea Institute of Industrial Technology, Ansan, 426-791, Korea |
| Abstract: | Dispersant-free PTT dyeing of temporarily solubilized azo disperse dyes based on pyridone moiety which contain β-sulfatoethylsulfonyl group was investigated. The dyes were successfully applied to PTT without the use of dispersants. The color yields of the dyes on PTT fabric were dependent on dyeing pH as well as dyeing temperature. The optimum results were obtained at pH 5–6 and 110 °C. The dyes showed alkali-clearing property and exhibited good to excellent fastness on the PTT fabric. The COD levels of the dyeing effluent from the temporarily solubilized disperse dyes were much smaller than those from commercial disperse dye. |
| Keywords: | Temporarily solubilized disperse dye Dispersant-free dyeing Alkali-clearing Dyeing effluent COD |
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