A novel technique to minimise energy and pollution in the dyeing of linen fabric

Abstract

Garments made from linen fabrics have a natural feel and drape. Most commercially available direct and reactive dyes have only a moderate affinity for this cellulosic fibre, although this lack of affinity can be overcome by the use of electrolytes. As a result, high volumes of wastewater containing large amounts of chemicals are discharged from the typical cellulosic material dyehouse. The ‘no‐salt dyeing’ of linen fabric with reactive and direct dyes was achieved by treating linen fabrics with chitosan in a microwave oven. After using the novel dye method, no observed enhancement of either wash or light fastness properties was seen. Dyebath reuse for both reactive and direct dyes was carried out in order to reduce the environmental impact of the dyes. This dyeing method was then applied to dyeing linen fabrics, with each of the items of clothing subjected to layout and cutting according to the design’s patterns; the dyeing results are discussed in this paper.

Preparation of cationic cotton through reaction with different polyelectrolytes

“…Chitosan, a biopolymer derived from chitin, is an example of a possible natural substitute for cationization of cotton as it has been studied by many researchers (Chattopadhyay 2001 ; Ibrahim et al 2010 ; Oliveira et al 2017 ; Sadeghi-Kiakhani and Safapour 2018 ; Pan et al 2020 ). Other studies include keratin, betaine, and ovalbumin as natural cationic agents (Arivithamani et al 2014 ; Ma et al 2016 ; Giacomini et al 2020 ).…”

Microwave‐assisted dyeing of poly(butylene terephthalate) fabrics with disperse dyes

“…Because microwave energy easily penetrates all of the particles of materials, the heating takes place instantly and uniformly, which, in turn, eliminates the problems that could occur during conventional heating. Various but limited work can be found in the technical literature on pretreatment , dyeing , finishing , surface modification and surface grafting , sanitization and drying/fixation of textile materials , in which microwave is used as a heat source. In these studies, the shortening of the process times and the enhancements of the processes are highlighted as a result of the uniform heating by microwave heating systems.…”

New Trend in Textile Coloration Using Microwave irradiation

“…Microwave Dyeing: Dyeing of linen fabric: Many authors [41] detailed that only direct and reactive dyes have a reasonable affinity to linen fabric, which leaves behind, a lot of amount of chemicals are discharged from the cellulosic fabric dye bath. A. Nabil Ibrahim et al introduced a novel technique "free salt dyeing" of linen fabric.…”