Vol. 4, Issue 5, Part C (2018)

Abstract
Turmeric rhizomes were used as source for pure vegetable dye for yellow colour. With normal dyeing procedure the turmeric dye needs mordants to improve the hue and get fixed on substrate. The yellow colour of turmeric turns in to grayish yellow with the normal conventional method of dyeing. The study was aimed at achieving an improved yellow colour from turmeric rhizomes without use of any mordants. Australian merino wool was used for the present study. A suitable procedure was optimized for wool through a series of experiments. Colourimetric analysis of dye was performed at 380 nm. A number of shades were developed with good to excellent washing fastness, through variations in dyeing conditions only. The final range of shades was tested for colour fastness to light and washing as per ISO standards. These tests were done at the Department of Textile Technology, IIT Delhi. Dyed samples showed good to excellent washing fastness.