Coloration Properties onto Synthetic Fibers Using Indigo

Abstract

The indigo colorant has been widely used with its importance characteristics such as attracted shade and color fastness property. Indigo is nonionic but this can be reduced to water soluble anions in the course of dyeing. This work was determined whether the developed sparingly soluble leuco moiety can be used to the synthetic fibers or not. In this context, the aim of this study was to investigate the indigo dyeing behaviors on the fiber substrates and to optimize the dyeing conditions. The effect of the factors such as concentration of dye, dyeing temperature and pH on the level of color strength (K/S) was studied. The dyeing results showed that higher color strength (K/S) of the indigo dye uptake was achieved at higher temperatures. Acid leuco dyeing around pH 3-4 also showed higher dye. This application could provide excellent light and wash fastness at all depths of shade.