A Feasible Method Applied to One-Bath Process of Wool/Acrylic Blended Fabrics with Novel Heterocyclic Reactive Dyes and Application Properties of Dyed Textiles

Abstract

Reactive dyes containing cationic groups have great potentiality as novel dyes, which can be applicable to one-bath dyeing of wool/acrylic blended fabrics. In this work, four novel heterocyclic reactive dyes containing cationic groups were designed by using m-aminophenyltrimethylammonium salt or N-(2-aminoethyl) pyridinium chloride salt as cationic groups, N, N-diethyl-1,3-benzenediamine as a coupling component, 2-amino-6-methoxybenzothiazole, 2-aminobenzothiazole or 3-amino-5-nitrobenzoisothiazole as diazo components. These dyes based on benzothiazole derivative chromophores not only showed beautiful color, including blue-green and fuchsia, but also had larger tinctorial strength with a high molar extinction coefficient, further reducing the dosage of dyes to achieve same color depth. Factors affecting the dyeability on fabrics, such as pH value, dyeing temperature and dye concentration were discussed. Excellent dyeing behavior, levelling properties and good fastness on wool/acrylic blended fabric were obtained. What’ more, excellent anti-ultraviolet and antibacterial properties were obtained for textiles with these dyes. The application of these dyes with large molar extinction coefficients presents a wide range of possibilities for the further development of cleaner production and eco-friendly dyeing, even functional textiles.

Pretreatment of Cellulose from Sugarcane Bagasse with Xylanase for Improving Dyeability with Natural Dyes

“…This result also correlates with previous studies by refs , . The result indicated real fixation of the dye on fibers via the nucleophilic substitution reaction and covalent bonding with the cellulose through anchimeric assistance between dye molecules and hydroxyl groups in cellulose. , …”

“…The result indicated real fixation of the dye on fibers via the nucleophilic substitution reaction and covalent bonding with the cellulose through anchimeric assistance between dye molecules and hydroxyl groups in cellulose. 46,47 ■ CONCLUSIONS In summary, cellulose was successfully obtained from SCB using alkaline pretreatment, bleaching, and xylanase treatment. The FTIR spectroscopy, Raman spectroscopy, and WI studies confirmed the removal of noncellulosic materials (hemicellulose and lignin) during these processes.…”

Effect of Low Temperature Reactive Dye Reactive Red 2 on Dyeing and Tensile Properties of Twisted Bamboo Fibers

“…First, the bleached bamboo bundle is immersed in the dye bath for a period of time, so that the dye molecules penetrate into the fiber bundle, and then the alkali agent is added to the same dye bath to make the dichlorotriazine group, and the cellulose molecule undergo a nucleophilic substitution reaction under the action of −OH to form a dye-fiber covalent bond, which not only shortens the dyeing time but also reduces energy consumption and wastewater discharge. The dyeing rate of the fibers was analyzed by adjusting the dye concentration, dyeing promoter concentration, and fixing agent concentration . Dyeing bamboo fiber bundles (DDB) can be obtained from the pretreated decolored bamboo bundles (DB) after dyeing.…”

“…The dyeing rate of the fibers was analyzed by adjusting the dye concentration, dyeing promoter concentration, and fixing agent concentration. 25 Dyeing bamboo fiber bundles (DDB) can be obtained from the pretreated decolored bamboo bundles (DB) after dyeing. The dyeing rate of the fibers was analyzed by adjusting the dye concentration, dyeing promoter concentration, and fixing agent concentration.…”

Preparation and Characterization of Self-Dispersing Phthalocyanine Blue 15:4 Pigment for Dyeing of Wool Textiles

“…Azo dyes in acid dyes are banned because of the risk of carcinogenesis [14,15]. In recent years, new colorants and dyeing methods have been developed [16,17].…”