Dyeing properties of novel electrolyte‐free reactive dyes on cotton fibre

Abstract

A series of electrolyte-free reactive dyes containing two quaternary ammonium salt groups as soluble moieties and one epoxy structure as the reactive group have been synthesised. The structures of the synthesised dyes were confirmed by Fourier Transform-infrared, proton nuclear magnetic resonance and elemental analysis, and their dyeing properties on cotton were studied using an electrolyte-free dyeing process. The results indicate that electrolyte-free reactive dyes with these structures give a high exhaustion rate, a high fixation rate and good build-up properties on cotton. Fastness properties were, in general, also very good. The optimal dyeing process of these electrolyte-free dyes for cotton fibre was 60°C with 20 g ⁄ l sodium carbonate.

Synthesis and salt‐free dyeing characteristics of cationic reactive dyes containing polyetheramine segments

“…Some methods are available for solving this problem, such as cationic modification of the cotton fabric before dyeing or using cationic reactive dyes [3][4][5][6][7][8][9]. Increasing dye uptake and reducing electrolyte usage during the dyeing of cellulose with reactive dyes are urgent tasks.…”

Preparation of antibacterial cellulose with s‐triazine‐based quaternarized N‐halamine

“…Quaternary ammonium salts could be incorporated onto different fibers via ionic bonds, which can render textiles with antimicrobial properties and increase color washing‐fastness of dyes. To accomplish textile dyeing and antibacterial finishing in the same time, some researchers prepared antibacterial cationic dyes by modifying of reactive dyes and dispersed dyes with quaternary ammonium salts . Besides, the introduction of quaternary ammonium salts into reactive dyes could also decrease the amount of neutral salt and achieve salt‐free dyeing of cotton fabrics.…”

“…And, from an ecological point of view, the high content of salt left in the dyebath waste could cause considerable problems. An alternative approach to solve this problem could be achieved by incorporating cationic groups into the cellulose or dye structure …”

Reakti̇f Si̇yah 5 Boyasinin Pamuklu Kumaşi Boyama Davranişi: K/S Renk Veri̇mi̇, Fi̇ksaj Ve Hasliklar

“…Çalışma sonucunda ultrason enerjisinin boyama zamanını kısalttığı belirlenmiştir. Reaktif boyarmaddelerin selülozik lifleri boyama verimi ve haslıkları konusunda literatürde oldukça fazla çalışma bulunmasına rağmen boyama verimi, yıkama ve haslık ile ilgili olanlar seçilerek incelenmiştir [9][10][11][12][13][14]. Reaktif boyarmaddeler içinde RB5 boyarmaddesi selülozik kumaşlarda yaygın olarak kullanılmasına karşın literatürde farklı boyama şartlarında K/S boyama verimi ve haslık sonuçlarının bir arada verildiği çalışma azdır.…”