Effect of desizing modes on dyed cotton fabrics for colourfastness to sunlight and perspiration

Desizing is applied to the yarn for ease in weaving process. In this study, three different desizing modes i.e., water, acid and enzymatic were used. The samples were bleached in Salomatic bleaching process. Finally samples were dyed with direct, sulphur and reactive dyes. colourfastness to sunlight and perspiration were checked on grey scale. The sizing material was removed efficiently by the enzymatic desizing mode. However, the different dyes showed somewhat similar colourfastness to sunlight and perspiration.