Dyeing, fastness, and deodorizing properties of cotton, silk, and wool fabrics dyed with gardenia, coffee sludge, Cassia tora. L., and pomegranate extracts |
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Authors: | Eun-Kyung Hwang Young-Hee Lee Han-Do Kim |
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Institution: | (1) Department of Organic Material Science and Engineering, Pusan National University, Busan, 609-735, Korea;(2) Korea Silk Research Institute, Jinju, 660-904, Korea |
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Abstract: | Four kinds of natural dying solutions (natural colorant extracts) were obtained by extraction from gardenia, coffee sludge,
Cassia tora. L., and pomegranate using water at 90°C for 90 min with a liquor ratio (solid natural colorant material/solvent water, weight
ratio) of 1/10. The dyeing, colour fastness, and deodorizing properties of cotton, silk, and wool fabrics dyed with natural
colorant extracts were compared. It was found that these properties were significantly dependent on the concentration of extracts,
the structure of colorant, and the kind of fabrics. The order of colour strength (K/S) is Cassia tora. L., pomegranate, coffee sludge, and gardenia. Colour fastness (light, water, and perspiration fastness) was in the range of
2nd–5th grades. The deodorizing performance of fabrics dyed with various natural colorant extracts was in the range of 50–99
%. The deodorizing performance increased in the order of gardenia < Cassia tora. L. < coffee sludge < pomegranate. Especially, the deodorizing performance of all fabrics dyed with pomegranate was found to
be highest at 99 %. |
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Keywords: | Natural colorants Natural colorant extraction Dyeing Fastness Deodorization performance |
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