Energy-efficient dyeing of nylon 6 using indigo powder dyestuff after atmospheric plasma treatment at ambient pressure / Fei Fan in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)  

[article]  inCOLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 322-322 Titre : Energy-efficient dyeing of nylon 6 using indigo powder dyestuff after atmospheric plasma treatment at ambient pressure Type de document : texte imprimé Auteurs : Fei Fan, Auteur ; Yingzhu Wu, Auteur ; Xunxin Wu, Auteur Année de publication : 2019 Article en page(s) : p. 322-322 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermomécanique Diélectriques Indigo Plasma à pression atmosphérique Un plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère. Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse. Polyamide 6 Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Nylon 6 was treated with a dielectric barrier discharge, i.e. atmospheric plasma at ordinary air pressure. Factors influencing the dyeing process of nylon 6 using indigo blue powder were studied. The mechanism and effect of this dyeing technology were compared with those of conventional technology. Dyeing after plasma treatment at 30–50 °C can produce high dye uptake in a short time. Notably, dyeing after plasma treatment is beneficial for energy conservation. However, at 60–70 °C, the K/S values of plasma‐treatment dyeing sharply increased over a short time, after which they remained largely unchanged. This finding indicated that the dyeing mechanism changed. The speed constant of dyeing after plasma treatment is 2.8 times that of conventional dyeing. The K/S values of dyeing samples after plasma treatment approached the dyeing saturation K/S value in a short time; therefore, this method of dyeing after plasma treatment achieves energy conservation and efficiency in a brief period of time. Conversely, conventional dyeing is more effective at high temperatures but consumes more energy. The adaptive electro‐discharge condition is achieved under the treatment conditions of 375 W for 2 min. The chromatic aberration of the dyed samples after plasma treatment is smaller than that of conventional dyeing at 50 °C for 75 min. Note de contenu : - EXPERIMENTAL : Materials - Dealing with nylon 6 under ordinary atmospheric pressure with dielectric barrier discharge - Dyeing of nylon 6 fabric using indigo blue - Morphology of nylon 6 before and after atmospheric plasma treatment - Fourier Transform-infrared spectroscopy - Wicking properties of indigo blue-dyed nylon fabric - Colour properties of dyed nylon 6 fabric - Measurement and analysis of dyeing fastness - Dyeing aberration comparison between the conventional dyeing technique and plasma treatment dyeing - RESULTS AND DISCUSSION : Plasma treatment dyeing mechanism - Influence of atmospheric plasma tratment on the capillary effect of nylon 6 at ordinary pressure - Dynamic curves of nylon 6 fabric dyeing with botanic indigo - Measurement and analysis of dyeing activation energy - Dyeing thermomechanical analysis - Measurement and analysis of dyeing fastness - Dyeing aberration comparison between conventional and plasma-treatment dyeing DOI : 10.1111/cote.12407 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12407 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32835 [article]

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