Abstract:
In the present study, applicability of ozone bleaching process at the jigger machine and effects of chosen ozonation parameters on the whiteness degrees of 100% cotton woven fabrics were investigated. For this aim, effects of ozone gas on the bleaching degrees of the samples in terms of ozonation conditions (in the air with dry and moist fabrics, and in the water), ozonation time (number of the passage), production capacity of the ozone generator (6 g/h, 12 g/h, 18 g/h) and method of ozone feeding to the jigger (via rubber diffuser or stone diffuser) were researched. In addition, in order to examine effect of rinsing process on the whiteness degree of the samples, the rinsing process was applied after ozonation applications. At the end of the study, whiteness degrees (as Berger) of the samples were measured and compared with conventional hydrogen peroxide bleaching. In addition, statistical analysis was carried out in order to research the effects of the investigated parameters on the output. The results showed that it was possible to apply the ozone bleaching process at the jigger and all of the investigated ozonation parameters had effect on the results at different levels. The best bleaching effect was obtained at the longest ozonation time and the highest production capacity of the ozone generator for ozone application in the water.
