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박문영(Mun Young Park),김호정(Ho Jung Kim),이문철(Mun Cheul Lee) 한국의류학회 2002 한국의류학회지 Vol.26 No.8
Coocus laccae(Laccifer lacca Kerr), usually known as Lac, is a land of cocoon which is parasitic on the tree around India and China. It contains the laccaic acid of red colored dyes and has been used for cosmetic or natural dyeing prior to the introduction of New World cochineal. Nevertheless, the characterization of Lac has not been studied, very little informed. The purpose of this study is to examine the effects of dyeing conditions for Lac extract, such as pH of dye bath, concentration of Lac extract, dyeing temperature and time, to find out the optimum conditions. The results were as follow. 1. The highest K/S values of the silk and wool was shown at pH 3 and pH 4. 2. K/S values of the silk came to nearly the adsorption equilibrium state at 40℃ and the curve of wool showed a dramatic increase with the increase of temperature. 3. Dyed silk and wool fabrics showed good light fastness without using mordants.