EXTRACTION OF NATURAL DYE FROM DIOSPYROS MOLLIS (GRIFF.) FRUITS BY MANY DIFFERENT SOLVENTS AND APPLICATION OF DYED ON SILK FABRIC

Abstract

Diospyros mollis (Griff.) locally known as “mac nua”, is a kind of wild plant which fruits are used to dye the famous black “Lanh My A” silk of Tan Chau, An Giang. In this study, the author uses four solvents: water, ethanol, acetone and diethyl ether to extract natural dye and it’s used dyeing for silk. As a result, the natural dye extracted with acetone solution from Diospyros mollis (Griff.) fruits was used to dye for silk that obtained a color saturation 3.72 which was the best solvent. Silk fabric after dyeing has achieved the level of 4-5 color fastness, high mechanical strength and the ecological properties.