Effect of the addition of a modifier in the supercritical dyeing of polyester / Mauro Banchero in COLORATION TECHNOLOGY, Vol. 126, N° 3 (2010)  

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 3 (2010) . - p. 171-175 Titre : Effect of the addition of a modifier in the supercritical dyeing of polyester Type de document : texte imprimé Auteurs : Mauro Banchero, Auteur ; Luigi Manna, Auteur Année de publication : 2010 Article en page(s) : p. 171-175 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of the work was to investigate the effect of an ethanol addition in the dyeing of a commercial polyethylene terephthalate yarn with supercritical carbon dioxide. The equilibrium uptake in the yarn and the partition coefficients of three azo dyes between the polymer and the fluid phases were experimentally measured under different working conditions and compared with the data obtained without any modifier. It was found that the presence of the modifier increases the dye concentration in the yarn and the solubility of the dye in the supercritical phase, allowing good dyeing results to be obtained under less severe working conditions. The partition coefficient data were also satisfactorily regressed with a semi-empirical correlation, available in the literature for a different system and here adapted to the partition of a dye between a fibre and a supercritical bath. DOI : 10.1111/j.1478-4408.2010.00243.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00243.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9463 [article]

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Supercritical fluid dyeing of synthetic and natural textiles – a review / Mauro Banchero in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 2-17 Titre : Supercritical fluid dyeing of synthetic and natural textiles – a review Type de document : texte imprimé Auteurs : Mauro Banchero, Auteur Année de publication : 2013 Article en page(s) : p. 2-17 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de carbone Fibres naturelles Fluides supercritiques Polyéthylène téréphtalate Teinture -- Fibres textiles Transfert de masse Index. décimale : 667.3 Teinture et impression des tissus Résumé : Supercritical fluid dyeing is an interesting alternative to the conventional aqueous process because of its environmental benefits. The aim of the paper is to provide the reader with an up-to-date overview of this subject, covering various aspects, such as the solubility and equilibrium partitioning of the dyes, mass transfer phenomena and solvent–polymer interactions occurring during coloration, up to the most recent reports on the technology of the dyeing process. Even though the best results have been obtained in the coloration of synthetic textiles, particular attention is given to the dyeing of natural textiles, which is, at the moment, the limiting step of this technology. Note de contenu : - SOLUBILITY OF DYES IN scCO2 - INTERACTIONS BETWEEN scCO2 and polymer - EQUILIBRIUM DYE PARTIONING BETWEEN FIBRES AND scCO2 - MASS TRANSFER PHENOMENA IN THE POLYMER AND IN scCO2 - THE TECHNOLOGY OF THE SUPERCRITICAL DYEING PROCESS - A FOCUS ON PET : Uniformity of dye distribution - Dyeing with dye mixtures - The washing step (post-dyeing) - Removal of oligomers - Alternative technologies - SUPERCRITICAL DYEING OF OTHER SYNTHETIC FIBRES - SUPERCRITICAL DYEING OF NATURAL FIBRES : Solubilisation of polar dyes in scCO2 - the reverse micellar technique - Use of disperse reactive dyes DOI : 10.1111/cote.12005 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12005/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17181 [article]

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