Comparison of the Effects of the Cationization of Raw, Bio- and Alkali-Scoured Cotton Knitted Fabric with Different Surface Charge Density

Pruś, Stanisław; Kulpiński, Piotr; Matyjas-Zgondek, Edyta

doi:10.2478/aut-2020-0049

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…The values of N (eq/g) for the commercial [IME] + Cl − and the cotton samples before and after modification were determined by the classical Kjeldahl method described in detail elsewhere [23,24] and calculated according to Equation (1):…”

Section: Nitrogen Contentmentioning

confidence: 99%

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Mechanism of Bonding Reactive Dyes with Copolymer (chloromethyl)oxirane-1H-imidazole cationised Cellulose

et al. 2022

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Introducing the cellulose chain cationic groups in the modification process completely changes the charge on the cotton surface from negative to partially or totally positive. That allows the electrostatic attraction and simultaneous exhaustion and fixation of reactive dyes. This reaction can be carried out without salt and alkali at room temperature. Similarly, the reaction between reactive dye and an alone copolymer ([IME]+Cl−) with TLC chromatography was confirmed. The analysis with the use of particle optimisation with MM+ molecular mechanics and quantum-chemical calculations PM3 by the method of all valence orbitals confirmed the experimental results of the high activity of the nucleophile formed on the hydroxyl group in the chain of a modifier. It was found and experimentally confirmed that the reactive dyes during the dyeing process of the cotton cationised with copolymer (chloromethyl)oxirane -1H-imidazole ([IME]+Cl−) create covalent bonds due to a reaction with the hydroxyl group located in the modification agent instead of with the hydroxyl group in the glucopiranose ring. Although the dyeing takes place in very mild conditions, a high degree of setting is achieved, comparable to conventional methods.

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Section: Nitrogen Contentmentioning

confidence: 99%

“…where: The charge on the surface of cellulose fibres was measured according to the previously developed recipes [23,24]. The value of the specific charge was calculated according to Equation (2):…”

Section: Cationicitymentioning

confidence: 99%

Mechanism of Bonding Reactive Dyes with Copolymer (chloromethyl)oxirane-1H-imidazole cationised Cellulose

et al. 2022

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Eco-friendly dyeing of cationised cotton with reactive dyes: mechanism of bonding reactive dyes with CHPTAC cationised cellulose

et al. 2022

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Influence of pH and fabric cationisation on functional properties of natural dyed cotton using extract from used tea bag

Hossain,

Das,

Akhtarujjaman

et al. 2023

Preprint

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The study focuses on the eco-friendly dyeing of cotton fabric by extracts from used tea bag without any metal mordant and also on investigating the effect of pH and fabric cationization on the properties of that dyed cotton. Coloured liquor was collected from leftover tea bags using water in boiling. Prior to dyeing, the cotton fabric was cationised with 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CHPTAC) at different percentage, followed by dyeing with tea liquor at different concentrations and different pH. The colour fastness and colorimetric properties (CIELab, CIELch, ΔE and K/S) of dyed cotton fabrics were then investigated. UV-Vis spectroscopy was used to calcualte exhaustion and fixation percentages. FTIR analysis was also carried out. The best results were obtained for pH 13. At pH 13, the highest exhaustion percentage was 88.6% for cationised fabric with cationiser concentration 55 g/L whereas it was 0.75% for non-cationised fabric and 3.6% for mordanted (KAI(SO₄)₂.12H₂O) fabric. Also, the colour fastness to washing, rubbing and perspiration of cationised fabric were excellent (4–5) than those of non-cationised fabric; nevertheless, the former has lower light fastness. Their higher washing and rubbing fastness were attempted to explain within the framework of density functional theory (DFT) by their considerably strong interaction between theaflavins, one of the main colouring components of tea dye and cationised cellulose monomer. All findings from this study explicitly demonstrate the significance of pH and fabric cationisation on dyeing and the functional properties of dyed fabric.

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Comparison of the Effects of the Cationization of Raw, Bio- and Alkali-Scoured Cotton Knitted Fabric with Different Surface Charge Density

Cited by 3 publications

References 22 publications

Mechanism of Bonding Reactive Dyes with Copolymer (chloromethyl)oxirane-1H-imidazole cationised Cellulose

Mechanism of Bonding Reactive Dyes with Copolymer (chloromethyl)oxirane-1H-imidazole cationised Cellulose

Eco-friendly dyeing of cationised cotton with reactive dyes: mechanism of bonding reactive dyes with CHPTAC cationised cellulose

Influence of pH and fabric cationisation on functional properties of natural dyed cotton using extract from used tea bag

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