Ultrasound-assisted enzymatic scouring of jute optimised by response surface methodology and its natural dyeing / Harshal Patil in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 97-108 Titre : Ultrasound-assisted enzymatic scouring of jute optimised by response surface methodology and its natural dyeing Type de document : texte imprimé Auteurs : Harshal Patil, Auteur ; Sahil Mudaliar, Auteur ; Ashok Athalye, Auteur Année de publication : 2023 Article en page(s) : p. 97-108 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Décapage Fibres textiles -- Lavage Jute et constituants Le jute est une plante herbacée de la famille des Malvacées, cultivée dans les régions tropicales pour ses fibres. Jute est aussi le nom donné à ces fibres textiles, appelées aussi chanvre de Calcutta. Nom scientifique : Corchorus capsularis L., famille des Malvacées, sous-famille des Grewioideae ; la classification classique le situe dans la famille des Tiliacées. Une plante voisine, Corchorus olitorius L., la corète potagère, est aussi utilisée aux mêmes fins. Surfaces de réponse (statistique) Teinture -- Fibres textiles Traitement enzymatique Ultrasons Index. décimale : 667.3 Teinture et impression des tissus Résumé : India is the largest producer of jute in the world and the use of this natural fibre in various value-added applications is gaining momentum. The use of white biotechnology involving enzymes for the efficient processing of jute is considered to boost its productivity. The present investigation deals with the pretreatment of jute by using ultrasound-assisted enzymatic scouring followed by bleaching and dyeing. The process showed optimum removal of impurities and improved water absorption capacity with minimal damage to fibre tensile strength. The process parameters and conditions were determined by response surface methodology, where weight loss of jute was kept as the main response. The optimised recipe obtained was 2.8% enzyme concentration, 1 g/L wetting agent at 55°C for 10 minutes at an ultrasound frequency of 40 kHz. The optimised recipe was compared with conventional high-temperature long-duration enzymatic scouring and was found to have an equal performance. Further, the scoured jute was dyed with a natural dye extracted from sappan wood and madder. Fourier Transform-infrared analysis was used for characterisation. The wash and light fastness of dyed jute yarn were evaluated and found to meet the industry norms. Note de contenu : - Optimisation of ultrasonic enzymatic scouring conditions using response surface methodology - Regression analysis - Response surface plot - Optimisation of responses - Pretreatment performance : Effect of pretreatment on the properties of jute yarn - Dyeing performance : Effect of pretreatments on the natural dyeing performance of jute yarn - Structural characteristics of scoured jute - Table 1 : Process parameters with range for the ultrasonic enzymatic scouring of jute yarn - Table 2 : Design matrix of experiments for the enzymatic scouring of jute - Table 3 : ANOVA model results of ultrasonic enzymatic scouring for jute yarn - Table 4 : Ranges of process parameters and their outputs - Table 5 : Pretreatment performance of jute yarn enzymatic scouring with ultrasound and conventional methods - Table 6 : Pictures of scoured, bleached and dyed jute yarn - Table 7 : Dyeing performance of jute yarn enzymatic scouring with ultrasound and conventional methods - Table 8 : Fastness performance of jute yarn enzymatic scouring with ultrasound and conventional methods DOI : https://doi.org/10.1111/cote.12638 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12638 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39208 [article]

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