“Effects of Reductive Stripping of Reactive Dyes on the Quality of 100% Viscose Knitted Fabric”

Abstract

Reactive dyes cannot be stripped satisfactorily from cellulosic materials due to the formation of co-valent bonds between dye and fiber. This research was under taken using around 5% bi-hetero reactive dyes trichromatic combination on pretreated viscose fabric and stripping was carried out in alkali reductive stripping process. The aim of the work was to investigate the effects of reactive dye stripping on the quality of viscose fabric. Stripping performance was evaluated in percentage by k/s analysis using spectrophotometer. Also Strength loss, weight loss, pilling resistance, absorbency and color fastness of stripped fabric were calculated for quality assessment. Though with the increase of concentration of stripping chemicals and temperature, stripping percentages were improved; processing damage to the fabric such as losses in strength, weight and pilling resistance ratings was found. In contrast, increased fabric absorbency was found due to stripping