Effects of cationic fixing agents on the direct dyeing properties of cotton fabrics

Abstract

One mono-reactive and two bis-reactive 2,3-epoxypropyl derivatives of quaternary ammonium chloride have been synthesised and characterised using different spectroscopic techniques. The effects of these compounds as fixing agents have been evaluated on the direct dyeing properties of cotton fabrics. The results indicated that pretreatment of cotton fabrics with these cationic agents enhanced the colour strength and fastness properties of direct dyeings over the untreated dyeings without using high electrolyte concentrations. However, bis-reactive derivatives have proved to be more effective than the mono-reactive derivative. Amongst bis-reactive derivatives, the compound with lower steric hindrance has shown superior results.

Effect of cationization on adsorption of silver nanoparticles on cotton surfaces and its antibacterial activity

“…Various studies have been performed on cellulose modification via cationization process in order to investigate the effect of cationic agents on the dyeing properties of cellulosic fibers. The effects of various compounds containing cationic and anionic groups as fixing agents on the dyeing properties of cotton fabrics have been evaluated (Sharif et al 2008(Sharif et al , 2007Xie et al 2008;Mughal et al 2007;Zhang et al 2007Zhang et al , 2005Montazer et al 2007;Fang et al 2005). The results indicated that pretreatment of cotton fabrics with cationic agents enhanced the color strength and fastness properties of dyeings over untreated dyeings without using high electrolyte concentrations.…”

Synthesis of blocked waterborne polyurethane with 3,5‐dimethylpyrazole for industrial application in digital inkjet printing

“…In the past decades, digital printing has been an important technology in the field of textile printing due to its customization, low cost, and high speed . According to the fixation mechanism, textile digital printing ink can be categorized as direct dye without resin and pigment ink, which utilizes polymer to adhere the pigment to substrate. The direct dye printing has some disadvantages, such as low dye utilization efficiency, low printing repeatability, and large wastewater discharge .…”

Synthesis of a Bi-functional Cationic Agent and its Application in Cotton Dyeing

“…7,8 Various chemicals have been used for cationic modi cation of cotton bers. [9][10][11][12][13][14][15] e most important and widely used commercial cationic agent is the quaternary ammonium salt 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC). However, this cationic agent has some di culties when applied; it is prone to hydrolysis under alkaline conditions, resulting in waste and environmental problems and lack of a nity to the cotton fabric.…”