Effect of combination of mordants on colour fastness properties of wool dyed with Goldendrop (Onosma echioides) dye

Bains, Sandeep; Kang, Sumeet; Kaur, Koshaipreet
October 2007
Colourage;Oct2007, Vol. 54 Issue 10, p44
Trade Publication
The present study was undertaken to dye wool yarn with goldendrop root. The dyeing was carried out optimizing dyeing conditions namely, dye material extraction time, dye material concentration and dyeing time and using combinations of mordants such as alum: chrome, alum: copper sulphate, alum : ferrous sulphate, chrome : copper sulphate, chrome : ferrous sulphate, copper sulphate : ferrous sulphate in the ratio of 50:50, 25:75 and 75:25. The dyed samples were evaluated for colourfastness to washing, rubbing, perspiration and light. The dyeing of wool at optimized conditions resulted in fair to fairly good colourfastness to light (rating range 3-4), fair to excellent colourfastness to washing and perspiration (rating range 3-5) and good to excellent colourfastness to rubbing (rating range 4-5) as found by evaluation of the colourfastness of the dyed samples by prescribed methods. The shades obtained were military green to dark military green, dark olive green brownish green, greenish brown, blackish brown, dark brownish grey, dark grey.


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