Green fire retardant finishing and combined dyeing of proteinous wool fabric / Santanu Basak in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)  

[article]  inCOLORATION TECHNOLOGY > Vol. 132, N° 2 (04/2016) . - p. 135-143 Titre : Green fire retardant finishing and combined dyeing of proteinous wool fabric Type de document : texte imprimé Auteurs : Santanu Basak, Auteur ; Kartick K. Samanta, Auteur ; Sajal K. Chattopadhyay, Auteur ; Pintu Pandit, Auteur ; Saptarshi Maiti, Auteur Année de publication : 2016 Article en page(s) : p. 135-143 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bananier et constituants Déchets agricoles -- Recyclage Essais dynamiques Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Laine Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Flame retardancy was imparted to a scoured and bleached, proteinous woollen textile by using banana pseudostem sap, an ecofriendly waste agricultural product, at different pH levels. The flame retardancy characteristics of both the control and the treated fabrics were analysed in terms of the limiting oxygen index and the vertical flammability measurement. Thermal degradation and fire retardancy mechanisms were studied using thermogravimetry, scanning electron microscopy, and energy dispersive X-ray analysis. Moreover, the charring mechanism of both the control and the banana-pseudostem-sap-treated fabrics with varying pH was analysed and reported in detail. The wool fabric was also dyed with CI Acid Blue 25 using banana pseudostem sap as well as water as the medium. The fabric dyed with the banana pseudostem sap medium at pH 5.5 showed more colour exhaustion, colour strength, and thermal stability compared with the control wool fabric. The mechanism by which superior fire retardancy and colour strength are imparted to the woollen textile by the application of banana pseudostem sap is proposed. Note de contenu : - MATERIALS AND METHODS : Material and BPS application - Determination of percentage add-on - Thermal characterisation - Dyeing of wool fabric - Colour parameters - Thermogravimetry and differential thermal analysis under nitrogen and in an air atmosphere - Scanning electron microscopy and energy dispersive X-ray analysis - Wash durability test - Mechanical strength - RESULTS AND DISCUSSION : Flame retardancy analysis - Thermogravimetry and differential thermal analysis - Scanning electron microscopy and energy dispersive X-ray analysis - Char characteristics - Wash durability to finish - Mechanical properties - Coloration of the wool fabric - Mechanism of the fire retardant finish and dyeing DOI : 10.1111/cote.12200 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12200 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25864 [article]

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Structural characterisation and coloration of ligno-cellulose and protein fibre-blended structures / Manik Bhowmick in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 6 (12/2023) . - p. 728-741 Titre : Structural characterisation and coloration of ligno-cellulose and protein fibre-blended structures Type de document : texte imprimé Auteurs : Manik Bhowmick, Auteur ; Santanu Basak, Auteur Année de publication : 2023 Article en page(s) : p. 728-741 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorimétrie Fibres animales Fibres de ramie Fibres textiles -- Propriétés mécaniques Lignocellulose Mélanges de fibres Soie et constituants Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : This study investigates the structures produced by blending ligno-cellulosic (ramie fibre, Boehmeria nivea L.) and protein fibres (mulberry silk, Bombyx Mori) with dissimilar mechanical properties. Ramie fibre, used for blending, is a ligno-cellulosic fibre with very high tenacity but low elongation. On the other hand, silk (mulberry) fibre has lower tenacity with better elongation. Blended fibrous structures have shown satisfactory tensile strength and elongation, while other physical properties, such as coefficient of friction, brightness and flexural rigidity, have also been improved. Technical findings revealed that the coefficient of friction reduced from 0.79 to 0.48 and specific work of rupture improved from 2.3 to 3.43 mJ/tex after incorporation of silk in the ligno-cellulosic fibre strand. Blended yarn cross-sectional images showed that finer silk fibres came to the surface, whereas the comparatively coarser cellulose-based ramie fibre migrated to the core. Atomic force microscopy of the blend structure was examined to assess the roughness and uniformity of the surface. Fourier Transform–infrared spectroscopy analysis verified the presence of amide groups (associated with silk fibre) and glucose ring groups (associated with the cellulose of Ramie fibre) in the same graph. In addition, innovative techniques of simultaneous coloration of the developed blends are also proposed scientifically. Note de contenu : - MATERIALS AND METHODS : Materials - Blended yarn or blended - fibre strand preparation - Tensile testing - Friction testing - Bending test - Packing coefficient - Wicking test - SEM study - AFM study - Fourier Transform-infrared analysis - Measurement of the whiteness, yellowness and brightness indexes - Dyeing of the blended yarn - Measurement of colour value, yellowness and brightness indexes - RESULTS AND DISCUSSION : Friction and bending properties of yarn - Yarn abrasion and packing coefficient - Capillary action of the blended yarn structure - AFM analysis of the blend - Table 1 : Frictional properties of the blended yarns made from ramie and silk fibres - Table 2 : Major characteristic peaks observed in the ramie and silk blended yarns - Table 3 : Comparison of different properties of the ramie-silk blended yarns - Table 4 : Colour-related parameters of the dyed blended yarns DOI : https://doi.org/10.1111/cote.12683 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12683 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40123 [article]

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