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케일 추출 색소로 염색된 면직물의 염색견뢰도 향상Improvement in the Color Fastness of Cotton Fabrics Dyed with Kale-Extracted Colorants
- Other Titles
- Improvement in the Color Fastness of Cotton Fabrics Dyed with Kale-Extracted Colorants
- Issue Date
- 2019
- Publisher
- 한국염색가공학회
- Keywords
- chlorophyll; color fastness; chitosan; heat setting; tannic acid
- Citation
- 한국염색가공학회지, v.31, no.4, pp 225 - 232
- Pages
- 8
- Journal Title
- 한국염색가공학회지
- Volume
- 31
- Number
- 4
- Start Page
- 225
- End Page
- 232
- ISSN
- 1229-0033
2234-036X
- Abstract
- The colorants of kale powders were optimally extracted using an 1:1 mixture solvent of ethanol and DMSO at 105℃ 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.
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