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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 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)
[article]
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)
[article]
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)
[article]
Titre : Using biodegradable organic salt for cotton garment dyeing to reduce effluent pollution Type de document : texte imprimé Auteurs : Ali Raza, Auteur ; Ali Shamhad, Auteur ; Awais Khatri, Auteur ; Alishba Javeed, Auteur Année de publication : 2022 Article en page(s) : p. 388-396 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
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
Etudes comparatives
Noir (couleur)
Résistance à la traction
Sels
Solidité de la couleur
Solidité de la teinture
Teinture -- Fibres textiles
Textiles et tissus -- Propriétés mécaniques
VêtementsIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The replacement of inorganic salt and alkali in the reactive dyeing of cotton textiles with organic biodegradable compound has been explored in recent years. We report the use of organic salt, tetra sodium salt of glutamic acid diacetic acid (GLDA-Na4) in the batchwise dyeing of cotton garment as an exhausting and fixing agent. The reactive dye, CI Reactive Black 5 was selected for the present study. The results revealed that the maximum K/S value of 25.5 and fixation of 90.74% was obtained using GLDA-Na4 at laboratory scale experiments. Furthermore, the effluent samples test results demonstrated considerably reduced total dissolved solids (TDS) and chemical oxygen demand (COD) contents with GLDA-Na4 in comparison to the inorganic chemicals. The colourfastness to light, rubbing and washing have demonstrated similar ratings with GLDA-Na4 and inorganic chemicals. The tensile strength of samples was enhanced by using GLDA-Na4. Note de contenu : - EXPERIMENTAL : Materials - Methods - Measurements
- RESULTS AND DISCUSSIONS : Effect of sodium chloride and sodium carbonate concentrations - Effect of fixation temperature and time in batchwise garment dyeing - Effect of GLDA-Na4 concentration - Effect of fixation temperature and time using GLDA-Na4 in batchwise garment dyeing - Comparison of dyeing results - Comparison of colour build-up of the dyed samples - Comparison of cost
Colourfastness properties - Characterisation of the dyeing effluent - Tensile strength
- Table 1 : Dyeing results comparison of organic salt and inorganic salt and alkali
- Table 2 : Comparison of K/S and %F achieved using sodium edetate and tetra sodium salt of glutamic acid diacetic acid (GLDA-Na4)
- Table 3 : Comparison of cost of dyed readymade cotton pants
- Table 4 : Colourfastness to washing, light and rubbing results
- Table 5 : Tensile strength of dyed samples in warp and weft directionsDOI : https://doi.org/10.1111/cote.12599 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12599 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37891
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Code-barres Cote Support Localisation Section Disponibilité 23520 - Périodique Bibliothèque principale Documentaires Disponible