Bleaching of Jute-Cotton blend fabric with Peracetic acid for deep dyeing

Abstract

The purpose of this study was to introduce sustainable bleaching of jute-cotton blend (Juton) fabric with Peracetic acid instead of conventional peroxide bleaching agents for the deep dyeing process. Juton was bleached with peracetic acid by varying the process conditions including temperature, pH, treatment time,concentration and the dyeing properties, fastness properties were investigated in a comparative manner. In addition, the physical properties of treated fabrics such as tensile strength, elongation, weight loss and the chemical changes of bleached fabrics were evaluated by using FT-IR. The morphological surface changes of bleached fabric were confirmed by SEM. Peracetic acid and hydrogen peroxide bleaching effluents were analyzed by measuring BOD, COD, TDS and DO values. The highest color strength was obtained at 70̊C,using neutral pH (7), concentration 20 mg/L in 80 min treatment time based on peracetic acid bleaching agent for Juton fabric. Peracetic acid bleaching of Juton fabric was found to be higher tensile strength and elongation than H₂O₂ bleaching. Peracetic acid bleaching effluent exhibited lower BOD, COD, TDS and higher DO than hydrogen peroxide bleaching effluent. Moreover, peracetic acid bleaching provided higher fastness to washing,light and rubbing than hydrogen peroxide bleaching.