Effect of Functional groups of Reactive dyes on the Dyeing Properties of Cotton Knit fabric

Maximum natural textile substrates are dyed with reactive-based dyes. The exercise of this dye is progressed in an elevated celerity for its moderate to good light fastness, simple and variant dyeing methods, and an apparition of many bright colors. A trichromatic mixture of dyes of the same reactive group is always preferred. In this research work, single jersey cotton knitted fabric was dyed with the same amount [2%] of reactive dyes (red, yellow & blue) of different functional groups (Mono-functional; Triazine and Vinyl sulphone, Bi-functional; Pyrimidine and Vinyl Sulphone and poly-functional). Colorfastness (wash, rub, perspiration and light) of dyed fabrics were evaluated. Bursting strength was also measured for different functional groups. It was found that Reactive dyes of MCT and Bi-Functional groups showed better rubbing, light fastness, and bursting strength properties than other functional groups.