Comparison of the effect of metal mordants and bio-mordants on the colorimetric and antibacterial properties of natural dyes on cotton fabric / Fatemeh Shahmoradi Ghaheh in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 689-698 Titre : Comparison of the effect of metal mordants and bio-mordants on the colorimetric and antibacterial properties of natural dyes on cotton fabric Type de document : texte imprimé Auteurs : Fatemeh Shahmoradi Ghaheh, Auteur ; Meghadad Kamali Moghddam, Auteur ; Majid Tehrani, Auteur Année de publication : 2021 Article en page(s) : p. 689-698 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens Biomordants Colorants végétaux Colorimétrie Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Etudes comparatives Evaluation Mordançage (teinture) Mordants (chimie) Solidité de la couleur Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The main objective of this study was to evaluate the effect of bio-mordants versus metal mordants in terms of colour measurement, colour fastness, and antibacterial properties of a natural dye extract (Hibiscus sabdariffa L.) on the cotton fabric. Accordingly, some bio-mordants including tannic acid, pine cone, lemon peel, and sodium alginate, as well as some metal mordants such as iron(II) sulphate, copper sulphate, zinc sulphate, and aluminium potassium sulphate were investigated based on three conventional mordanting procedures (pre-, meta- and after-mordanting). The method appropriate for H. sabdariffa dyeing on the cotton fabric, according to the colour fastness factor, was found to be the after-mordanting method. The bio-mordants used in this study, the same as metal salts, increased the colour fastness on the dyed cotton fabrics and produced excellent light fastness (rating of 5 to 6), wash fastness (rating of 4 to 5), and dry/wet rub fastness (rating of 4 to 5). The higher antibacterial activities (> 90% bacterial reduction) against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa were observed when tannic acid, pine cone, and lemon peel were applied to the dyed cotton fabric. The use of bio-mordants in the natural dyeing of the cotton fabric could be, therefore, recommended due to the biocompatibility and non-toxicity of natural mordants, along with excellent colour fastness and appropriate antibacterial properties. Note de contenu : - MATERIALS AND METHODS : Materials - Mordanting - Dyeing procedure - Colour characteristics - Colour fastness - Evaluation of the antibacterial activity of the fabric - RESULTS AND DISCUSSION : Colour characteristics of the premordanted fabric - Colour characteristics of the meta-mordanted fabric - Colour characteristics of the after-mordanted fabric - Colour strength of th edyed fabric - Antibacterial evaluation of the dyed cotton fabric fabric - Table 1 : Colour characteristics of the premordanted fabric - Table 2 : Colour characteristics of the cotton fabrics dyed by the meta-mordanting method - Table 3 : Colour characteristics of the cotton fabrics dyed by the after-mordanting method - Table 4 : Bacterial reduction (%) of the dyed cotton fabric DOI : https://doi.org/10.1111/cote.12569 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12569 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36798 [article]

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