Reduction Potential Effect during the Dyeing of Cotton Fabric by Vat Dye

Dyeing is one of the vital processes in the textile chemical processing industries. There are many useful commercial dyes available for the coloration of textile fiber substrates. Accordingly, cotton material is dyed mostly by reactive, sulphur and vat dyes due to their efficient characteristics. However, vat dye is highly appreciated in the cotton dyeing industries due to its overall fastness properties, even though it contains some limitations like insolubility, high cost, involvement of powerful chemicals. In this research work, the reduction potential of the reducing agents and the corresponding effects on the cotton fabric dyeing using vat dye is studied.