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Current Issue
V.35,no.4,Dec 2023
https://doi.org/10.5764/TCF.
Journal Textile Coloration and Finishing
Year / Vol.,
Issue, Month
2019 / V.31,no.4,Dec
Title Improvement in the Color Fastness of Cotton Fabrics Dyed with Kale-Extracted Colorants
Authors Yeonjoo Lee, Sukyung Kwak and Jinho Jang*
Institution/Affiliations Kumoh National Institute of Technology
Pages/Total page pp.225 ~ 232 / 8
Language Korean
Abstract The colorants of kale powders were optimally extracted using an 1:1 mixture solvent of ethanol and DMSO at 105¡É for 30 minutes obtaining a high yield of 359.7§¶ /mL chlorophylls. Low color fastness of the dyed fabrics with the extracts, particularly against washing and solar radiation, can be overcome by the combined treatments of chitosan, heat setting and tannic acid. Washing fastness to color change was improved from rating 1-2 up to 5 due to the enhanced electrostatic interactions between the colorants and the positive glucosamine unit of the chitosan in the cationized cotton. In addition, the tannic acid treatment contributed to the additional increase in color fastness after the sequential treatments of chitosan pretreatment, dyeing and heat setting.
Keywords chlorophyll, color fastness, chitosan, heat setting, tannic acid
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