Kualitas Pewarnaan Ekstrak Gambir Pada Batik Sutera

Gambier is one of the vegetable colorant source that can be applied for batik dyeing. This research aims to determine the color shades and fastness properties of silk batik dyed with gambier. The method used in this research is experimental with variation include kinds of solvent (water and 70% ethanol) and fixator (alum, ferrosulphate and lime). Dyed silk batik with gambier extract then evaluated by its color shades and difference of intensity also fastness properties. From the evaluation it is obtained that the color shades are brown to dark brown color, color differences score L* is 44.3-66.2; a* 7.2-13.1; b* 15.1-32.1, and color intensity %R score is 10.48-21.12 and K/S score is 1.47-3.827. While the average value of fastness to washing is 4 (good), wet rub 4 (good) and light 4-5 (good). It has been concluded that the gambier extract can be used as batik dye on silk fabrics with good qualities