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KMID : 1024520180270060457
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Journal of the Environmental Sciences
2018 Volume.27 No. 6 p.457 ~ p.466
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Comparison of Characteristics of Ketapang and Gallnut for Development of Environmentally Friendly Black Dye
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Kang Jae-Yong
Lee Jung-Eun
Kim Sung-Yeon
Park Geun-Tae
Park Jang-Su
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Abstract
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The purpose of this study was to develop environmentally friendly black dye by comparing Ketapang and Gallnut, that have been traditionally used as a black dye. As a result of FT-IR and UV-Vis spectrophotometer analysis, Ketapang was characterized by condensed tannin, while Gallnut showed hydrolyzable tannin. Due to the dyeability characteristic analysis, the color fastness of the non-mordant dye was slightly lowered to grades 1-3. In the dry-cleaning fastness test, both non-mordant and iron mordant were excellent, in grade 4-5, and the daylight fastness was excellent grade 3-5 too. The L*
values of Ketapang were 26.93 (pre-mordant) and 29.39 (post-mordant), which were higher than those of Gallnut, 41.90 (pre-mordant) and 43.02 (post-mordant), indicating that Ketapang was more easily colored as a black dye than Gallnut.
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KEYWORD
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Ketapang, Gallnut, Environmentally Friendly black dye, Tannin
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