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玉ネギ外皮色素と銅塩による濃色で堅ろうな媒染染色 Deep and Fast Mordant Dyeing with Colorant of Onion Skin and Cupric Salts 牛腸, ヒロミ 吉川, 優香 本多, 素子 上西, 朋子 玉ネギ外皮 媒染 第二銅塩 堅ろう 染色 濃色 onion skin mordant cupric salt fastness dyeing deep color For deep and fast mordant dyeing of cotton, silk, wool, and nylon fabrics, a colorant of onion skin was mordant dyed with cupric chloride and acetate. The colorant was extracted by using boiled water. The cloths were first mordanted in 0.1 mol/L cupric salt solutions at 30℃ for 50 min. The mordanted cloths were dyed in the extracted solution at a liquor to fabric ratio of 1:50 at 70~80℃ for 30 min. The k/s values and the hues in terms of L*, a*, and b* of the dyed cloths were measured with a spectrophotometer. The washing fastnesses and color transfers of the dyed cloths were estimated by the standard method. Visual perceptions of color indicated that the wool cloth is appears as greenish-brown, the silk as reddish ocher, the nylon as dark yellow-orange, and the cotton as yellow-orange. The k/s values indicated a maximum at 420~430 nm with the levels in the order of wool > silk > nylon > cotton. The grades of color changing and fading on washing were 4 and 4-5 for cotton cloth, 2-3 for silk, 3-4 for wool, and 4 and 4-5 for nylon. The grades of color transfers of the dyed cloths on washing were all 5. Therefore, we obtained a deeper color and a good grade of washing fastness except for those with silk cloth. 実践女子大学 2019-03-09 jpn departmental bulletin paper https://doi.org/10.34388/1157.00002029 https://jissen.repo.nii.ac.jp/records/2080 10.34388/1157.00002029 AN10494731 24336645 実践女子大学生活科学部紀要 Bulletin of Jissen Women's University Faculty of Human Life Sciences 56 37 41 https://jissen.repo.nii.ac.jp/record/2080/files/生活科学56-5.pdf application/pdf 1.5 MB 2019-04-10