Spectroscopic Study of the Interaction of Reactive Dyes with Polymeric Cationic Modifiers of Cotton Fabrics

Cotton cationization with low molecular weight or polymeric cationic modifiers allows the effective dyeing of cotton substrates with reactive dyes under salt-free and more environmentally friendly conditions. The current work focuses on the spectroscopic study of the intermolecular interactions, whi...

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Bibliographic Details
Published in:Applied sciences 2023-04, Vol.13 (9), p.5530
Main Authors: Papapetros, Konstantinos, Sygellou, Labrini, Anastasopoulos, Charalampos, Andrikopoulos, Konstantinos S., Bokias, Georgios, Voyiatzis, George A.
Format: Article
Language:English
Subjects:
Anions
Aqueous solutions
Cationic polymerization
cationization
Cellulose
Chemical bonds
Chlorides
Comparative studies
Copolymers
Cotton
Dyeing
Dyes
electrostatic interactions
Electrostatic properties
Fabrics
Fluorescence
Low molecular weights
Molecular weight
Organic dyes
polymeric modifier
Polymers
Precipitates
reactive dyes
salt-free dyeing
Scanning electron microscopy
Spectroscopic analysis
Spectroscopy
Spectrum analysis
Textile composites
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Summary:Cotton cationization with low molecular weight or polymeric cationic modifiers allows the effective dyeing of cotton substrates with reactive dyes under salt-free and more environmentally friendly conditions. The current work focuses on the spectroscopic study of the intermolecular interactions, which dictate the physicochemical process associated with fabric dyeing. Water-soluble cationic copolymers of vinyl benzyl chloride (VBC) and vinyl benzyl triethylammonium chloride (VBCTEAM) have been used as cellulose cationic modifiers. Dye uptake was assessed using Remazol Brilliant Blue R and Novacron Ruby S-3B dyes. The study involves ATR-FTIR, UV-Vis, fluorescence, and XPS spectroscopy. The results of binary polymer-rich dye-polymer aqueous solutions or dye-polymer precipitates at stoichiometric charge-ratio revealed that the sulfonate/sulfate anions of the dyes interact with the cationic VBCTEAM units of the polymer via electrostatic interactions. Moreover, the comparative study of dye application on modified and unmodified fabrics suggests that, unlike the latter, where dyes are chemically bound to cellulose, electrostatic forces dominate the interaction of modified fabrics with dye molecules.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13095530