Abstract
Two modified polyester fibers (EDDP and ECDP) are blended with wool and dyed with two different disperse dyes. The effects of temperature on the dye uptake of the modified polyesters and the staining of wool are investigated. Dye uptakes for EDDP and ECDP are greater than that for normal polyester (NPET) over the whole temperature range studied. Deeper shades are obtained on EDDP and ECDP, even when dyeing occurs at the boil. Compared to the wool/NPET blend, staining of wool by disperse dye is significantly reduced when the wool is dyed together with the modified polyesters. Color fastness to washing of shades on the two modified polyesters is poorer than that for NPET. Color fastness to washing on EDDP and ECDP also decreases as the dyeing temperature increases. ' Color fastness of disperse dyes on the wool component dyed with modified polyesters is better than that dyed with conventional polyester.
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