Date of Award


Degree Type


Degree Name

Master of Science in Textiles, Fashion Merchandising and Design


Textiles, Fashion Merchandising and Design

First Advisor

Martin Bide


Color fastness is important for satisfactory performance of textiles in use. Successful color fastness testing relies on accurate interpretation of published test methods, and control of laboratory conditions. The accuracy of testing may be checked by the use of a verification standard, which should produce known results if the test is carried out correctly. The AATCC does not have a verification standard for two of its most often-used colorfastness tests: Method 15 (Colorfastness to Perspiration) and Method 61 (Colorfastness to Laundering). A survey of dyes in the Colour Index was used to select candidate disperse, direct and acid dyes on the basis of their fiber suitability, fastness, availability, and hue. The dyes were applied individually to cotton or nylon as appropriate, and their fastness to perspiration and laundering assessed. The results were used to plan combinations of dye, which were applied to a nylon-cotton blend. Once again, fastnesses of the dyeings were assessed.

In a final step, the combination dyeings showing the most appropriate (i.e. borderline pass/fail) levels of fastness were subjected to the variations in the test method conditions to see which responded most strongly to such variations The combination comprising of Direct Blue 80 (0.2% owf), Disperse Red 60 (0.5% owf) and Acid Red 299 (0.2% owf) performed well as verification fabric for colorfastness to laundering. This combination did not perform well as a verification for colorfastness to perspiration; such a fabric will need to be developed separately.



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