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Effects of Dyeing Parameters on Color Strength and Fastness Properties of Cotton Knitted Fabric Dyed with Direct Dyes

Author : Md. Abdullah Al Mamun, Mahbubur Rahman, A.K.M. Ayatullah Hosne Asif and Priti Sarkar

Pages : 1068-1072
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The dyeing parameters can affect the properties of a dyed sample to a great extent. The effect of dyeing parameters such as salt concentration, soda concentration, temperature and time on color strength and fastness properties of cotton knitted fabric dyed with direct dyes were studied in this work. Cotton knitted fabric was dyed varying one parameter and keeping the other parameters same in exhaust dyeing method. It was repeated for every parameter. The effects of variation in dyeing parameters have been assessed by color fastness to rubbing, color fastness to wash and color strength (K/S). The samples were tested according to ISO standards. From the results it was observed that K/S increases with the increases of salt, soda, temperature and time. No significant change in colorfastness to wash (change in color) for dyeing parameters variation was observed. Dyeing parameters have a little effect on the color fastness to wash (color staining) and rubbing.

Keywords: Cotton knitted fabric, Dyeing parameters, Direct dyes, Color strength and Color fastness.

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.2 (April- 2014)



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