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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국의류산업학회 한국의류산업학회지 한국의류산업학회지 제8권 제3호
발행연도
2006.1
수록면
343 - 348 (6page)

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This study aims to attain gray tone dyed goods by using tannin that is contained in green tea. Tanin is givengeneral name of polyphenol, which has a characteristic that bonds with protein and it is used for food preservative thatprotects against bacteria, as well as its purpose of black tone dye for silk treatment that has been processed since its earlyages. In particular, as tannin reacts with all kinds of metallic mordant and changes to various colors, when tannin acid iscombined with iron, it becomes tannin steel and produces gray tone color. Tanin that is contained in gren tea is con-densed tannins and its structure does not hydrolyze, thus having flavan type structure. In order to find the suitable con-time, reflection rate based on concentration, color changes based on acid treatment and alkali treatment, changes on sur-face based on concentration or metal mordant condition, and lightfastness were measured. Maximum absorption wave-length (λmax) of green tea tanin was at around 273nm, while strong absorption was also observed at below 350 nm. Dyeability of green tea tannin is done more easily on silk rather than cellulose fibers such as cotton, while the optimum con-dition for dyeing was observed to be at 60oC, for 20 minutes. As a result of acid treatment, the color of dye material con-sisted highly of gray tones and showed overall gray tone with the combined color of yellow and red after the alkaliat counter-clockwise direction on the Y-scale of Munsell's scale of colors. Additionally, lightfastness was more on a normalfading.

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