Improvement A Sustainable Pretreatment Process Including Enzymatic Treatment and Ozone Bleaching for The Jigger Machine

The present study aimed to improve a sustainable pretreatment process with enzymes and ozone gas at the jigger wet process machine for the 100% cotton woven fabric. In order to achieve this purpose, the stage where the ozone bleaching should be applied in the pretreatment process was firstly investigated. After the pretreatment processes, the effects of the processes on the pretreatment and mechanical performances of the fabric samples were researched. The pretreatment performance of treatments was researched through the residual starch, hydrophility, and whiteness (Berger value) tests, while the mechanical performances were examined via breaking and tearing strength, abrasion resistance, pilling, and SEM analyses. After all performance tests, to investigate the importance of the pretreatment process on the effectiveness of dyeing, the samples were dyed at the same jigger machine. In addition, the yellowing tendency of the pretreated samples depending on the time after the ozone bleaching were also researched. The results demonstrated that the stage where the ozone bleaching is applied was crucial, and the best results were obtained when the ozone bleaching is applied before the combined desizing and bioscouring treatments (Process 2). Besides, the ozone gas had no crucial negative effect on the mechanical performances of the fabrics, and the ozone-bleached fabric samples have no yellowing tendency when a process applied after ozone bleaching.