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Auteur Awais Khatri
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Mehran University of Engineering and Technology Jamshoro - Sindh - Pakistan
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Coloration of cellulose nanofibres with pigments / Shamshad Ali in COLORATION TECHNOLOGY, Vol. 136, N° 5 (10/2020)
[article]
Titre : Coloration of cellulose nanofibres with pigments Type de document : texte imprimé Auteurs : Shamshad Ali, Auteur ; Awais Khatri, Auteur ; Urooj Baig, Auteur ; Alishba Javeed, Auteur ; Nadir Ali Rind, Auteur Année de publication : 2020 Article en page(s) : p. 427-434 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Colorimétrie
Eaux usées -- Analyse
Electrofilature
Essais (technologie)
Fibres cellulosiques
Fibres textiles -- Propriétés mécaniques
Morphologie (matériaux)
Nanofibres
Pigments
Résistance au lavage
Solidité de la couleur
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Electrospun nanofibrous mats are popular for their wide technological applications as medical, filtration, sensing and high performance textiles. The potential for coloration of electrospun nanofibrous mats for aesthetic purposes has also been explored recently, and the pigment coloration of cellulose electrospun nanofibrous mats is reported for the first time in this paper. Cellulose acetate electrospun nanofibrous mats were fabricated using electrospinning followed by treatment with sodium hydroxide to synthesise regenerated cellulose electrospun nanofibrous mats. Then the cellulose mats were coloured with commercially available pigments by a pad‐dry‐bake method. Excellent K/S and colour fastness to both washing and light were produced with the application of three commercial pigments. The pH and total dissolved solids content of the coloration wastewater, as well as the mechanical properties of the electrospun nanofibrous mats, were also tested. Attenuated total reflection‐Fourier Transform infrared spectroscopy and scanning electron microscopy analysis were used for characterisation. Note de contenu : - EXPERIMENTAL : Materials - Preparation of CEL ENMs - Pigment coloration of CEL ENMs - Colour measurement and testing - Wastewater testing - Characterisation - Mechanical properties of ENMs
- RESULTS AND DISCUSSION : Chemical structures of CA and CEL ENMs - Effect of bakint temperature on K/S - Effect of baking time on K/S - Effect of pigment quantity on K/S - Effect of pigment quantity on the colorimetric values of coloured CEL ENMs - Analysis of wastewater testing - Colour fastness properties - Surface morphology of ENMs - Mechanical properties of ENMsDOI : https://doi.org/10.1111/cote.12485 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12485 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34486
in COLORATION TECHNOLOGY > Vol. 136, N° 5 (10/2020) . - p. 427-434[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22268 - Périodique Bibliothèque principale Documentaires Disponible Digital ink-jet printing of regenerated cellulose nanofibrous mats with reactive inks / Asifa Sattar in COLORATION TECHNOLOGY, Vol. 140, N° 2 (04/2024)
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Titre : Digital ink-jet printing of regenerated cellulose nanofibrous mats with reactive inks Type de document : texte imprimé Auteurs : Asifa Sattar, Auteur ; Awais Khatri, Auteur ; Shamshad Ali, Auteur ; Farooq Ahmed, Auteur Année de publication : 2024 Article en page(s) : p. 279-286 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose.
Colorimétrie
Encres réactives
Evaluation
Fibres cellulosiques
Impression jet d'encre
Impression numérique
Impression sur étoffes
Nanofibres
Solidité de la couleurIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The versatility of nanofibres enables them to be used for various technological applications such as filtration, biomedicine and healthcare, composites, protective and functional textiles. Recently, in addition to the functional properties of electrospun nanofibrous mats, their aesthetic properties have been explored. Herein, attempts have been made to develop digital ink-jet printing of regenerated cellulose nanofibrous mats with reactive inks. First, a cellulose acetate polymer was created to fabricate electrospun cellulose acetate nanofibrous mats, which were then converted into regenerated cellulose nanofibrous mats through deacetylation. Next, the cellulose nanofibrous mats were treated with an alkaline solution then coloured with four (cyan, magenta, yellow and black) commercially available reactive inks by a digital ink-jet printing method using a piezoelectric digital ink-jet printer. Various parameters were investigated, including the optimal concentration of the pretreatment agents, fixation temperature and time, colour yield and the absorbency of the electrospun nanofibrous mats. The digital ink-jet printed cellulose nanofibrous mats exhibited excellent colour yield and colour fastness properties. Morphological analysis through scanning electron microscopy and chemical analysis through Fourier Transform–infrared were also carried out. Note de contenu : - EXPERIMENTAL : Materials - Fabrication of regenerated CNMs - Pretreatment of regenerated CNM - Digital ink-jet printing of regenerated CNMs - Colour assessment
- RESULTS AND DISCUSSION : Effect of sodium bicarbonate concentration - Effect of sodium carbonate concentration - Effect of urea concentration - Effect of curing temperature - Effect of curing time - Colour fastness properties - Colour yield and colorimetric values of digital ink-jet printed CNMs - SEM morphological analysis - FTIR spectroscopic analysisDOI : https://doi.org/10.1111/cote.12713 En ligne : https://drive.google.com/file/d/1jlBxoJjMYw573eUGuX0ImXFsq2rMfnPP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40944
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Code-barres Cote Support Localisation Section Disponibilité 24690 - Périodique Bibliothèque principale Documentaires Disponible Dyeability of polyurethane nanofibres with disperse dyes / Awais Khatri in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Dyeability of polyurethane nanofibres with disperse dyes Type de document : texte imprimé Auteurs : Awais Khatri, Auteur ; Shamshad Ali, Auteur ; Abdul Khalique Jhatial, Auteur ; Seong Hun Kim, Auteur Année de publication : 2015 Article en page(s) : p. 374-378 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Electrofilature
Morphologie (matériaux)
Nanofibres
Polyuréthanes
Structure chimique
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Nanofibres enjoy broad technical applications in filtration, medical, biosensing, functional, and high-performance textiles. Recent trends/developments in nanofibre research have also focused on the coloration of nanofibres. In this context, polyurethane nanofibre webs, which have been commercially successful, were electrospun and dyed with a high-energy-level CI Disperse Red 167:1 dye and a low-energy-level CI Disperse Blue 56 dye by the pad-dry-cure method. The dyed polyurethane nanofibres exhibited good colour strength values with acceptable colour fastness. Results revealed that the high-energy-level dye produced slightly better colour strength than the lower-energy-level dye. Further, scanning electron microscopy images showed that the morphologies of dyed and undyed nanofibres were almost identical. Note de contenu : - EXPERIMENTAL : Materials - Electrospinning - Dyeing of polyurethane nanofibre - Measurements
- RESULTS AND DISCUSSION : Chemical structure of polyurethane nanofibres - Effect of curing temperature and time - Effect of dye concentration on colour strenght - Colour fastness properties - Morphology of polyurethane nanofibresDOI : 10.1111/cote.12171 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12171 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24664
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Pad dyeing of cellulose acetate nanofibres with disperse dyes / Zeeshan Khatri in COLORATION TECHNOLOGY, Vol. 129, N° 2 (04/2013)
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Titre : Pad dyeing of cellulose acetate nanofibres with disperse dyes Type de document : texte imprimé Auteurs : Zeeshan Khatri, Auteur ; Awais Khatri, Auteur ; Umaima Saleem, Auteur ; Gopiraman Mayakrishnan, Auteur ; Byoung-Suhk Kim, Auteur ; Kai Wei, Auteur ; Ick-Soo Kim, Auteur Année de publication : 2013 Article en page(s) : p. 159-163 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose.
Colorants réactifs
Elasticité
Electrofilature
Fibres cellulosiques
Nanofibres
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In addition to a number of applications of nanofibres in technical fields such as medical, filtration and biosensing, nanofibres are recently being widely explored in terms of apparel use. Past work has focused on the functional properties of nanofibres for apparel use. Coloured nanofibres were produced to investigate their aesthetic properties for the potential application to apparel. Webs of cellulose acetate nanofibre were electrospun and dyed with a high energy level CI Disperse Red 167:1 dye and a low energy level CI Disperse Blue 56 dye using the continuous pad–dry–bake method. Results revealed that the high energy level dye produced better colour yield than the lower energy level dye. The dyed cellulose acetate nanofibres produced acceptable colorimetric values, colour yield and colour fastness. Young’s modulus of dyed nanofibres increased by threefold in comparison to the undyed cellulose acetate nanofibres. Scanning electron microscopy images showed good morphology with the smooth surface of the dyed cellulose acetate nanofibres. Note de contenu : - EXPERIMENTAL : Materials - Electrospinning - Dyeing of nanofibres - Measurements
- RESULTS AND DISCUSSION : Effect of baking temperature - Effect of baking time - Effect of dye concentration - Colour fastness properties - Morphology of dyed cellulose acetate nanofibres - Mechanical propertyDOI : 10.1111/j.1478-4408.2012.00409.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18060
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Code-barres Cote Support Localisation Section Disponibilité 14906 - Périodique Bibliothèque principale Documentaires Disponible The use of trisodium nitrilo triacetate in the pad–steam dyeing of cotton with reactive dyes / Awais Khatri in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)
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Titre : The use of trisodium nitrilo triacetate in the pad–steam dyeing of cotton with reactive dyes Type de document : texte imprimé Auteurs : Awais Khatri, Auteur ; Rajiv Padhye, Auteur ; Max White, Auteur Année de publication : 2013 Article en page(s) : p. 76-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bases (chimie)
Colorants réactifs
CotonLe 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).
Eaux usées -- Analyse
Electrolytes
Essais dynamiques
Résistance au lavage
Teinture -- Fibres textiles
Traction (mécanique)
Trisodium nitrilotriacétateIndex. décimale : 667.3 Teinture et impression des tissus Résumé : This paper presents results on the use of trisodium nitrilo triacetate, a biodegradable alkaline organic salt, for pad–steam dyeing of cotton with reactive dyes as a replacement for conventionally used inorganic electrolyte and alkali. Two widely used dyes, CI Reactive Red 147 and CI Reactive Blue 250, were used in the study. The colour yield, dye fixation and ultimate colour fastness achieved by using trisodium nitrilo triacetate were closely comparable with those obtained by using inorganic electrolyte and alkali. The tensile breaking force and wrinkle recovery angle of the dyed fabrics were also measured and were slightly improved when using organic salt. Additionally, the dyeing effluent showed reductions in total dissolved solids content with trisodium nitrilo triacetate. Note de contenu : - EXPERIMENTAL : Cotton fabric - Dyes and chemicals - Pad-steam dyeing - Washing - Colour yield and dye fixation - Colour fastness and tensile testing of dyed fabrics - Effluent analysis - The pH of dyed fabric after steamming
- RESULTS AND DISCUSSION : Effect of inorganic electrolyte concentration - Effect of inorganic alkali concentration - Effect of trisodium NTA concentration - Trisodium NTA as an alkali for dye fixation - Effect of steaming time using trisodium NTA - Comparison of dyeings using tridosium NTA and inorganic chemicalsDOI : 10.1111/j.1478-4408.2012.00410.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00410.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17190
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Code-barres Cote Support Localisation Section Disponibilité 14552 - Périodique Bibliothèque principale Documentaires Disponible Using biodegradable organic salt for cotton garment dyeing to reduce effluent pollution / Ali Raza in COLORATION TECHNOLOGY, Vol. 138, N° 4 (08/2022)
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