Single bath dyeing of modified nylon/cotton blended fabrics using direct/acid dyes

Abstract

Purpose

This study aims to deal with the dyeing of nylon-/cotton-blended fabric in one bath using direct and acid dyes.

Design/methodology/approach

The cellulose in cotton/nylon-blended fabric was chemically modified using 3-chloro-2-hydroxypropyl tri-methyl ammonium chloride (CHPTAC) as cationizing agent to impart positive charge on the cellulose. The modified and unmodified blended fabrics were dyed in a single bath with direct and acid dyes under various concentrations of 0.5, 1, 2, 4 and 6 per cent on the weight of fabric by exhaust method. The dyeing of modified and unmodified fabrics was characterized through the properties such as K/S and colorfastness to washing, rubbing and light.

Findings

The modified fabric exhibited higher color yield, comparable rubbing fastness and good washing fastness.

Originality/value

The dye uptake was maximum in a single-bath dyeing process of nylon-/cotton-blended fabrics without electrolyte addition, which minimizes the impact of dyes on environment.

Citation

Iqbal, K., Javid, A., Rehman, A., Rehman, A., Ashraf, M. and Abid, H.A. (2020), "Single bath dyeing of modified nylon/cotton blended fabrics using direct/acid dyes", Pigment & Resin Technology, Vol. 49 No. 3, pp. 165-170. https://doi.org/10.1108/PRT-09-2019-0084