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이전숙 ( Jeon Sook Rhie ),최경은 ( Kyung Eun Choi ) 한국가정과학회 2003 한국가정과학회지 Vol.6 No.1
We investigated the bacterial and chemical retting conditions of ramie grown in Hansan Bacterial retting was done in troughs at a temperature of 30±2℃ for 1, 2. 3, 4. 5, 6 and 10 days. Chemical retting(CR) was done at the different conditions using sodium silicate (Na2SiO3). sodium carbonate(Na2CO3) and sodium hydroxide(Na0H) as aikali solutions. The retting solution was boiled during 1. 2, 4 and 6 hours respectively at the different concentration(0.5. 2.0, 4.0. 6.0. 8.0 %) with decorticated ramie stems submerged in it. The treated ramie was then rinsing with running tap water thoroughly, which was further soaker in 0.5% acetic acid (v/v) solution for three minutes and washed thoroughly with distilled water. Finally ramie was dried for 2 hours in vacuum oven at 100℃. To know change of ramie fiber characteristics retted at the dfferent conditions, weight loss, fiber bundle strength were tested and color. texture, luster etc. were also sensually evaluated. The results were as follows. · Weight loss of ramie retted in each alkali solutions were about 10%. 20% and 30% in sodium silicate, sodium carbonate and sodium hydroxide, respectively. · Chemical retting was faster than bacterial retting, but the color of chemically retted ramies were worse than that of bacterially retted ramies. · The combination of bacterial and chemical processing showed some merits. A combination of either 2 or 3 days of bacterial and then chemical tetting might provide the best quality ramie. · Rarme fiber became cottonized ramie when retted in 8% NaOH solution for 6-8hours.
이전숙 ( Jeon Sook Rhie ) 한국가정과학회 2002 한국가정과학회지 Vol.5 No.2
Dyeing properties of the colorants extracted from acorn on wool fabric were investigated. Effects of dyeing temperature, dyeing time, repeating, and pH on dye uptake and colorfastness were explored. Acorn colorants showed very good affinity to wool fiber and produced bright to dark brown color ranged 4.81∼8.97YR, 4.46∼7.47/1.79∼3.35. Higher temperature increased dye adsorption, so did longer time and more repeating. Washfastness was fairly good. The Dyed wool fabric had deeper color after irradiation to light. pH had an effect on the development of color, also. Dye uptake and washfastness were higher in acidic and alkaline pH than in neutral pH solution.