The effects of dye structure,dye concentration and fabric pH on the color fastness to the combination of perspiration and light of cotton fabrics were tested.The results showed that:alkaline perspiration has a greater effect on the color fastness of dyed fab-rics than acidic perspiration;with the increase of dye concentration,the color fastness of dyed fabrics was improved;the dye structure was the most important factor on the color fastness of dyed fabrics;reactive dyes such as UF series and Turquoise HF-G were more suitable for fabrics which had requirements on color fastness to the combination of perspiration and light;when the fabric pH value in the range of 4.0～7.0,the color fastness of dyed fabrics to the combination of perspiration and light has no change.
color fastness to the combination of perspiration and lightdye structurealkaline perspirationacidic perspiration
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