Comparative studies on dyeing rate migration and wash fastness properties of azo dyes derived from 2-aminothiazole derivatives on acetate fabrics

Abstract

Migration and diffusion properties of synthesized azo dyes from 2-aminothiazole derivatives applied on commercial grade undyed cellulose acetate (CA) and cellulose triacetate (CTA) were investigated using dyeing conditions of 2% on weight of fabric (owf), 50:1 liquor ratio and subjected to ISO3 and ISO4 standard wash fastness tests. From the studies, the wash fastness in both fabrics was found to be inversely proportional to the dye diffusion coefficient and migration properties. Tests showed some dye admixture exhibit compatibility in properties while others showed skittering effect. These observations are attributable to structural effect, degree of fabric crystallinity and surface potential effect in dye- substrate interactions.

Key words:-Migration, Diffusion, 2-Aminothiazole, Cellulose acetate, Cellulose triacetate, Skittering effect.