Dyeing, fastness, and deodorizing properties of cotton, silk, and wool fabrics dyed with coffee sludge (<i>Coffea arabica L.</i>) extract

Abstract

Abstract A natural colorant was extracted from Coffea arabica L. , using water as extractant at 90°C for 90 min. Studies have been made on the dyeing, color fastness, and deodorization properties of cotton, silk, and wool fabrics dyed with Coffea arabica L. extract solutions. The best mordants were found to be FeSO 4, CuSO 4 , and SnSO 4 for improving the color strength ( K / S ) of cotton, silk, and wool fabrics. Mordants MnSO 4 , ZnSO 4 , and NiSO 4 for cotton (Rating 3), and all mordants except MnSO 4 for silk (Rating 3), mordants CuSO 4 , FeSO 4 , CoSO 4 , Al 2 (SO 4 ) 3 , and MnSO 4 for wool (Rating 4) were the best mordants to improve the light fastness. It was found that FeSO 4 and CuSO 4 were the best mordants for the improvements of color strength ( K / S ) and light fastness for silk and wool fabrics. In addition, it was found that cotton, silk, and wool fabrics dyed with the Coffea arabica L. extract showed good deodorization performance. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 251–257, 2007