Standardization of dyeing variables for dyeing of cotton with Walnut Bark

Paul, Susan; Sharma, Anshu; Grover, Ekta
April 2003
Man-Made Textiles in India;Apr2003, Vol. 46 Issue 4, p152
Academic Journal
This study aims to optimize various dyeing variable for dyeing of wool with walnut dye and to test the colorfastness of the selected dye on woolen yarns. Cotton yarns were selected for the study. A series of experiments were conducted to optimize the dyeing condition for Walnut dye. Dye from Walnut bark was extracted in both alkaline an acidic medium. The dye extract was subjected to visual light of wavelength using Spectronic 20 D. Four mordants namely alum, potassium di chromate, copper sulphate and ferrous sulphate were selected for mordanting for cotton yarns during dyeing. Dyeing was carried out using the optimized concentration of dye, dyeing time, extraction time and concentration of mordants. Twenty percent concentration of Myrobalan was found to be best among the various concentration of Myrobalan tried for Walnut dye on cotton fiber.


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