Influence of wool bleaching with hydrogen peroxide on dyeing with CI Acid Blue 80

This study investigates the influence of wool bleaching with hydrogen peroxide on the kinetics of wool dyeing, using a milling dye CI Acid Blue 80. The dyeing kinetics were studied at different temperatures on both unbleached and bleached wool [15 and 30 ml hydrogen peroxide (35% w/w)] and the following parameters determined: kinetics of adsorption, diffusion coefficient and apparent activation energies of the dyeing system for each type of wool. The results show that the values of these parameters are greater for the unbleached wools than for the bleached ones and that the values decrease as the bleaching intensity increases.