Dyeing of Polyester Microfibers in Acid and Alkaline Media

Abstract

In this study, the microfiber polyester fabric was dyed in three colour intensities with six commercial disperse dyestuffs under HT conditions, in acid (pH 5.5) and alkaline (pH 9.5) media at rates of 0.5, 1.0 and 2.0 %. The acid and alkaline methods were compared in terms of colour and fastness. In addition, the strength values of three disperse dyestuff dyeing processes were determined in each of the two methods. In the performed study, it has been observed that the fastness and strength results of acid and alkaline methods were either close or similar to each other, but that the colour measurements differed and that dyeing in alkaline medium provided lighter shades.