A Study of Physico-Chemical Properties, Exhaust Dyeing of Cotton with Synthesized azo-reactive Dyes and Their Printing Applications

Three sulfatoethylsulfone reactive dyes have been synthesized and were applied to mill desized, bleached and mercerized cotton fabric. Effect of different dyeing parameters i.e. salt concentration, dyeing time, dyeing temperature and pH of dye solution were being optimized by exhaust dyeing method. The fixation (%F) of the synthesized dye molecules with the cotton fabrics was also studied. Cotton fabric was printed with the three synthesized dyes by printing paste formulation with sodium alginate as a thickening agent. Dyed and printed cotton fabrics exhibited excellent to good fastness results. Index Term-Vinylsulfone, Pad-thermosol dyeing, Reactive dye, Printing, Color strength, Fastness.