Cationic modification of cotton fabrics and reactive dyeing characteristics

Abstract

The effect of cationic modification of cotton fabrics, using commercial agent Sintegal V7conc, on reactive dyeing characteristics was studied in this work. The changes after cationization and their effects on practical application of reactive dyes were identified by various methods. Cationically modified fabrics have more positive zeta potential, compared to untreated fabrics, which has a favorable influence on reactive dyeing in the absence or presence of salt. Color intensities of reactive dyes reached their maximum on samples treated with the highest concentration of Sintegal V7conc solution and dyed in the presence of standard salt concentration. The results obtained indicate that color intensity increase is a combined contribution of both salt and cationic agent on adsorption and fixation of reactive dyes on cotton.