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The role of inorganic electrolyte (salt) in cellulosic fibre dyeing - Part 2 theories of how inorganic electrolyte promotes dye uptake / Stephen M. Burkinshaw in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 547-586 Titre : The role of inorganic electrolyte (salt) in cellulosic fibre dyeing - Part 2 theories of how inorganic electrolyte promotes dye uptake Type de document : texte imprimé Auteurs : Stephen M. Burkinshaw, Auteur Année de publication : 2021 Article en page(s) : p. 547-586 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Absorption Colorants -- Adsorption Composés inorganiques Electrolytes Fibres cellulosiques Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : This review concerns the application of vat dyes, sulphur dyes, azoic colorants, direct dyes and reactive dyes to both natural and man-made cellulosic fibres from aqueous dyebaths using exhaust dyeing processes and the role of added inorganic electrolyte in such dyeing processes. In this part of the paper, the various theories/hypotheses/concepts which have been proposed to account for the promotional effect exerted by added inorganic electrolyte on dye uptake are reviewed and scrutinised, from the viewpoints of the essential physico-chemical properties of the five classes of dye used and the fundamental aspects of their application. Note de contenu : - THEORIES OF THE ROLE OF INORGANIC ELECTROLYTE IN CELLULOSIC FIBRE DYEING - THERMODYNAMIC AND KINETIC INTERPRETATIONS OF THE ROLE OF INORGANIC ELECTROLYTE IN CELLULOSIC FIBRE DYEING : Thermodynamic analysis - Kinetic analysis - ELECTROLYTE - WATER INTERACTIONS - ELECTROLYTE - FIBRE INTERACTIONS : Fibre surface negative charge neutralisation - Increased water sorption - Increased specific volume - ELECTROLYTE-DYE INTERACTIONS : Dye self-association - Combined reduced dye solubility/increased dye self-association - Interstitial water in dyeing - MECHANISTIC MODEL OF DIRECT DYE ADSORPTION : Dye bath phase - Fibre phase - Thermally-driven dye aggregation/disaggregation - Applicability to other anionic dye dye precursors - THE PROMOTIONAL EFFECT OF REDUCED LIQUOR RATION ON DYE UPTAKE DURING EXHAUST DYEING DOI : https://doi.org/10.1111/cote.12550 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12550 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36789 [article]

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Influence of aminopropylvinylsilsesquioxane post-treatment on the colour performance of pigment-based inks on ink-jet-printed polyester fabrics / Osama Abdel Hakeim in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 587-603 Titre : Influence of aminopropylvinylsilsesquioxane post-treatment on the colour performance of pigment-based inks on ink-jet-printed polyester fabrics Type de document : texte imprimé Auteurs : Osama Abdel Hakeim, Auteur ; Samah Abdou Rashed, Auteur ; Hanan Abdelmohsen Diab, Auteur Année de publication : 2021 Article en page(s) : p. 587-603 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aminopropylvinylsilsesquioxane Antistatiques Encre Evaluation Fibres polyesters Impression jet d'encre Impression sur étoffes Pigments Textiles et tissus synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The present research manages the utilisation of post-treatment coating solutions of aminopropyl/vinyl/silsesquioxane (APSV) for ink-jet printing of polyester with CMYK (cyan, magenta, yellow and key [black]) pigmented water-based ink-jet inks. The proposed protocols could effectively fix the pigment colours on polyester at a low relieving temperature under the thermal initiation or ultraviolet (UV)-radiation of vinyl terminated groups in APSV compared to the commercial textile binders. The colorimetric data and fixation, antistatic properties, roughness and durability of the ink-jet-printed samples were studied. The outcomes demonstrated that APSV successfully fixed the pigment-based ink-jet inks on polyester fabric, and could achieve significantly higher colour performance and degree of fixation than the commercial textile binders. The APSV-post-treated examples had durable antistatic properties and soft handle. The durability tests indicated that the ink-jet-printed polyester fabrics post-treated with APSV retained a higher degree of fixation and antistatic properties after 10 launderings. In general, the outcomes revealed that APSV can be successfully utilised as a pigment binding agent, eliminate all determinant drawbacks in works of literature for treatment of fabrics in ink-jet printing application, such as the fabric handles and the many approached methods. Moreover, it showed a good durable antistatic finish for the post-treatment of ink-jet-printed polyester fabrics. Note de contenu : - EXPERIMENTAL : Materials - METHODS : Purification and alkaline treatement of PES - Ink-jet printing of PES fabric - Post-treatment with textile binders - Post-treatment with APSV - Post-treatment with APSV under UV-radiation - Evaluation of the printed fabrics - RESULTS AND DISCUSSION : Assessment of APSV post-treatment for fixation of pigment-based inks on PES - Comparative analysis of post-treatment with APSV and commercial textile binder - Effect of vayring the concentration of APSV on the degree of fixation of ink-jet printed polyester fabrics - Optimisation of the factors affecting APSV post-treatment under thermal initiation - Optimisation of the factors affecting APSV post-treatment under UV radiation - Laundering durability of APSV post-treatment - Scanning electron microscopy of ASV treated fabrics - XPS characterisation - FTIR spectra - Performance properties of APSV post-treated polyester fabrics - Table 1 : Effect of post-treatment agent on the colour strength and fastness properties of ink-jet printed samples - Table 2 : Effect of concentration of sodium persulphate on colorimetric values of ink-jet printed polyester fabrics - Table 3 : Effect of concentration of 2,2-diethoxyacetophenone (DEAP) on the colorimetric values of ink-jet printed polyester fabrics - Table 4 : Effect of concentration of DEAP on the colorimetric values of ink-jet printed polyester fabrics DOI : https://doi.org/10.1111/cote.12552 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12552 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36790 [article]

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Investigation into the removal of pigment, sulphur and vat colourants from cotton textiles and implications for waste cellulosic recycling / Pendo Bigambo in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 604-614 Titre : Investigation into the removal of pigment, sulphur and vat colourants from cotton textiles and implications for waste cellulosic recycling Type de document : texte imprimé Auteurs : Pendo Bigambo, Auteur ; Chris M. Carr, Auteur ; Mark Sumner, Auteur ; Muriel Rigout, Auteur Année de publication : 2021 Article en page(s) : p. 604-614 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants au soufre Les colorants au soufre sont des colorants utilisés pour teindre de façon assez économique des fibres cellulosiques, principalement dans des nuances sombres (noir, brun, bleu foncé). Insolubles à l'état oxydé, ils sont rendus solubles par réduction à la soude caustique pour la teinture, dans un procédé analogue aux colorants de cuve, plus chers. Les colorants s'obtiennent par action du soufre sur des composés organiques, notamment sur le 2-4-dinitrophénol (Sulphur Black 1) ou le toluène-2-4-diamine et la 4-nitroaniline (Sulphur Brown 12). Coton Le 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). Déchets industriels -- Elimination Déchets industriels -- Recyclage Pigments Récupération (Déchets, etc.) Recyclage (déchets, etc.) Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Cotton can be coloured by dyeing and printing using either dye or pigment colourants. Pigments are insoluble in water but can be dispersed in a polymer print binder and heat-fixed to the fabric. Vat and sulphur dyes similarly have low solubility in water but through alkali/reduction can be solubilised and exhausted onto the cotton fibre. Following their reoxidation, the dyes are insolubilised in the fibre and, like pigment prints, in general exhibit good wash fastness. In this study, sequential acid/alkali/peroxide or acid/dithionite/peroxide treatments were investigated as a means of removing pigment/polymer prints and common sulphur and vat dyes from coloured cotton fabric. Using the sequential acid/dithionite/peroxide treatment, up to 97% of both sulphur and vat colourants could be “stripped” from dyed cotton producing a white cellulosic feedstock material that could be used for “new” fibre regeneration. By contrast, the “stripping” of the pigment/polymer binder colourant system was less predictable and less complete and is probably a reflection of the different chemical natures of the polymer binder and pigments. This contrasting behaviour highlights the range of chemistries applied to cotton and that developing a universal single treatment to strip out all finishes may be problematic. Note de contenu : - EXPERIMENTAL : Materials - Application of pigment print formulation - Dyeing treatments - Acid/alkali treatment of the pigment-printed and dyed cotton - Acid/dithionite treatment of the pigment-printed and dyed cotton - Hydrogen peroxide treatment of the pigment-printed cotton and dyed cotton - Colorimetric analysis - Scanning electron microscopy analysis - RESULTS AND DISCUSSION : Effect of sequential stripping treatments on pigment-printed cotton - Effect of sequential stripping treatments on sulphur-dyed cotton fabrics - Effect of sequential stripping treatments on vat-dyed cotton fabrics DOI : https://doi.org/10.1111/cote.12556 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12556 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36791 [article]

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Comparison of the colour fading effects of sodium hypochlorite and ozone treatments / Idil Yigit in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 615-624 Titre : Comparison of the colour fading effects of sodium hypochlorite and ozone treatments Type de document : texte imprimé Auteurs : Idil Yigit, Auteur ; Semiha Eren, Auteur ; Recep Karali, Auteur ; Fahri Yibar, Auteur ; Hüseyin Aksel Eren, Auteur Année de publication : 2021 Article en page(s) : p. 615-624 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie Coton Le 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). Décoloration Eau -- Consommation Énergie -- Consommation Hypochlorite de sodium Mesure Ozone Produits chimiques -- Consommation Textiles et tissus Index. décimale : 667.3 Teinture et impression des tissus Résumé : Colour fading is a method that is used to achieve a vintage look in textile goods. It is desired by customers in the textile market. Additionally, customers demand that these types of products are produced by environmentally friendly methods. In this study, sodium hypochlorite and ozone were used as laboratory-scale colour fading reagents on dyed cotton fabrics. Cotton fabrics were dyed with four different primary colours: red, yellow, blue and black. Dyed fabrics were subjected to ozone and sodium hypochlorite treatment under different treatment conditions. Ozone was chosen as an alternative for comparison and it was applied at fixed flow rate (5 L/min) and time (10 minutes). Colour differences, chemical oxygen demand, bursting strength and energy, water and chemical consumptions were measured. The surface morphology was characterised by scanning electron microscopy. We can conclude that ozonation is effective in discharging colour from dyed fabric samples, and the colour-fading effect is uniform, like in sodium hypochlorite treatment. It was observed that both processes are similar in terms of strength and surface modification. Results showed a 90% cost reduction, 85% water conservation and a 26% chemical oxygen demand reduction. Note de contenu : - MATERIALS AND METHODS : Materials - METHODS : Dyeing - Fading - Fading by sodium hypochlorite - Fading by ozone - Fading effect measurement - Measurement of colour - Measurement of scanning electron microscopy - Strength and environmental impact measurement - Bursting strength tests - Chemical oxygen demand tests - Energy, water and chemical consumption comparisons - RESULTS AND DISCUSSION : Measurement of colour - Scanning electron microscopy observations - Bursting strength tests - Chemical oxygen demand tests - Energy, water and chemical consumption comparisons - Table 1 : A comparison of ozone and sodium hypochlorite fading - Table 2 : Colorimetric data of ozone and sodium hypochlorite treatments - Table 3 : The chemical oxygen demand (COD) loads of effluents according to fading treatment - Table 4 : Energy, water, and chemical consumption comparisons DOI : https://doi.org/10.1111/cote.12554 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12554 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36792 [article]

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An investigation of process parameters on colour during the dyeing of polyester in supercritical carbon dioxide media / Idil Yigit in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 625-644 Titre : An investigation of process parameters on colour during the dyeing of polyester in supercritical carbon dioxide media Type de document : texte imprimé Auteurs : Idil Yigit, Auteur ; Semiha Eren, Auteur ; Hande Ozcan, Auteur ; Ozan Avinc, Auteur ; Hüseyin Aksel Eren, Auteur Année de publication : 2021 Article en page(s) : p. 625-644 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de carbone Fibres polyesters Fluides supercritiques Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Innovative supercritical carbon dioxide (scCO2) treatment conditions in fluidised media technology were examined for polyester dyeing. The different dyeing processes in scCO2 media were carried out under a constant dyeing temperature of 120°C (at pressures ranging from 9 to 29 MPa), a constant pressure of 25 MPa (at dyeing temperatures ranging from 40 to 140°C) and a constant density range of 500-550 kg/m3 (at combinations of dyeing temperatures ranging from 80 to 130°C and dyeing pressures ranging from 18 to 28 MPa). The constant dyeing temperature, constant dyeing pressure and constant density (120°C, 25 MPa, 500-550 kg/m3, respectively) were selected according to the best results in the literature and recommendations from industrial applications for polyester dyeing in scCO2 media. The different conditions of the studied parameters and their influence are discussed. Colour difference (ΔE) and colour strength (K/S), as well as washing fastness and bursting strength properties, were investigated and compared. Acceptable colour properties (similar to those for standard [control reference] fabric: dyed in scCO2 media at 120°C, 25 MPa pressure and 506 kg/m3 density for 90 minutes) on polyester fabric, with commercially acceptable and quite high washing fastness levels and comparable bursting strength values (similar to those for standard fabric without significant or drastic strength loss), could be achieved with the following scCO2 dyeing processes: at a lower dyeing pressure with the same dyeing temperature (in scCO2 media at 120°C, 21 MPa pressure and 423 kg/m3 density for 90 minutes), at a lower dyeing temperature with the same dyeing pressure (in scCO2 media at 100°C, 25 MPa pressure and 588 kg/m3 density for 90 minutes) and at both a lower dyeing pressure and a lower dyeing temperature with a constant density range of 500-550 kg/m3 (in scCO2 media at 110°C, 24 MPa pressure and 526 kg/m3 density for 90 minutes). Satisfactory and successful dyeing properties and performance similar to polyester fibre dyed under standard scCO2 dyeing conditions with less energy consumption could be achieved with the correct scCO2 dyeing process parameter optimisation. For instance, the dyeing process in the scCO2 environment at the same dyeing temperature with the standard scCO2 dyeing process (at 120°C), but with a lower dyeing pressure (at 21 vs 25 MPa), resulted in a 17 kWh decrease in energy consumption. In conclusion, it is very important to choose the correct dyeing pressure to obtain level dyeing in the polyester dyeing process carried out in a scCO2 environment and to achieve a reduction in energy consumption during dyeing in a scCO2 medium. Note de contenu : - MATERIALS AND METHODS : Materials - Methods - RESULTS AND DISCUSSION : Constant temperature experiment results - Constant density range experiment results DOI : https://doi.org/10.1111/cote.12553 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12553 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36793 [article]

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Durable surface functionalisation and pigment coloration of cellulosic fabrics using bioactive additives / Nabil A. Ibrahim in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 645-657 Titre : Durable surface functionalisation and pigment coloration of cellulosic fabrics using bioactive additives Type de document : texte imprimé Auteurs : Nabil A. Ibrahim, Auteur ; Enas M. R. El-Zairy, Auteur ; Basma M. Eid, Auteur ; Shimaa S. Abd Allah, Auteur Année de publication : 2021 Article en page(s) : p. 645-657 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs Additifs anti rayonnement ultraviolet Additifs biosourcés Aloe vera et constituants Antibactériens Arganier et constituants Caractérisation Fibres cellulosiques Gingembre et constituants Jojoba et constituants Neem et constituants Pigments Résistance au lavage Surfaces fonctionnelles Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The main goal of this study is to develop a facile eco-friendly method for antibacterial/ultraviolet (UV)-blocking functionalisation using various green bioactive functional additives namely neem, jojoba, argan, aloe vera, ginger, and tulsi. In addition, pigment coloration of cellulosic substrates including cotton, viscose, cotton/viscose, and cotton/linen using pigment colourants and appropriate printing auxiliaries in one step was used. The experimental results revealed that the durability, improvement in the imparted antibacterial/UV-blocking functional properties and enhancement in the depth of the obtained pigment prints followed a decreasing order: tulsi > ginger > aloe vera > argan > jojoba > neem ≫ none, keeping other parameters constant. The obtained data also demonstrated that the developed pigment prints exhibited remarkable functionalities and depth of shade after 15 washing cycles. Moreover, it was observed that improvement in the imparted functional and coloration properties were a function of types of cellulosic substrate and the kind of colourant. Scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) analysis for selected samples confirmed the surface modification, morphology changes and immobilisation of the used active ingredients onto the treated substrates. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Type and concentration of the natural functional additive - Effect of natural additive type and kind of cellulosic blend - Type of pigment colourant - Durability to wash - Characterisation DOI : https://doi.org/10.1111/cote.12555 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12555 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36794 [article]

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4,5-Dinitrosulfonefluorescein and related dyes : Kinetics of reversible rupture of the pyran ring and their interaction with lysozyme / Nika N. Kriklya in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 658-667 Titre : 4,5-Dinitrosulfonefluorescein and related dyes : Kinetics of reversible rupture of the pyran ring and their interaction with lysozyme Type de document : texte imprimé Auteurs : Nika N. Kriklya, Auteur ; Taras Yu. Gromovoy, Auteur ; Nicolay O. Mchedlov-Petrossyan, Auteur Année de publication : 2021 Article en page(s) : p. 658-667 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorants -- Analyse Dynamique moléculaire Fluorescence Lysozyme Le lysozyme est une protéine globulaire formée de 129 acides aminés (chez l'être humain), que l'on rencontre dans un certain nombre de sécrétions (larmes, salive, lait maternel, mucus...) et dans le blanc d'œuf, chez de nombreuses espèces d'animaux, dont insectes et acariens1. Il s'agit d'une hydrolase acide (EC 3.2.1.17) sécrétée par les granulocytes et les monocytes. Elle détruit la paroi bactérienne en catalysant l'hydrolyse des peptidoglycanes la constituant. Spectrométrie de masse Index. décimale : 667.3 Teinture et impression des tissus Résumé : Fluorescein and sulfonefluorescein dyes are stable in solution within a wide pH range. Nucleophilic addition of the hydroxide (HO–) group to the nodal carbon atom is not typical of these compounds. They are also not prone to rupture of the pyran cycle under the action of alkali. However, the last-named heterocycle readily opens at high pH values in the case of derivatives containing nitro groups in the xanthene moiety. Moreover, while in the case of nitrofluoresceins, for example, 4,5-dinitrofluorescein, this reaction is irreversible, with 4,5-dinitrosulfonefluorescein acidification of the alkaline solution immediately returns the visible absorption spectrum to that of the original hydroxyxanthene dye. We present a quantitative study of the kinetics of the pyran cycle rupture in aqueous alkali without and with micelles of a cationic surfactant. Also, both initial dye and reaction product were studied via the matrix-assisted laser desorption/ionisation time-of-flight (MALDI-ToF) technique. The second part of the article is devoted to the interaction of 4,5-dinitrosulfonefluorescein and other dyes of similar structure with lysozyme basing on the MALDI-ToF mass spectrometry. This made it possible to arrange the dyes according to their affinity for the protein and draw some conclusions about the nature of the association of the dye with lysozyme. Note de contenu : - EXPERIMENTAL : Materials - Mass spectrometry - Characterisation of the colloidal species - Procedure of the kinetics study - RESULTS AND DISCUSSION : Alkaline rupture of the pyrancycle of 4,5-dinitrosulfonefluorescein - Kinetic data processing : Aqueous NaOH solutions - Surfactant effect : 4,5-dinitrosulfonefluorescein in the aqueous CTAB/NaOH system - The behaviour of 2,4,5,7-tetranitrosulfonefluorescein in alkaline aqueous media - Interaction of the dyes with lysozyme DOI : https://doi.org/10.1111/cote.12565 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12565 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36795 [article]

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Organoclay-assisted vat dyeing of polypropylene nanocomposite fabrics / Yehya A. Youssef in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 668-677 Titre : Organoclay-assisted vat dyeing of polypropylene nanocomposite fabrics Type de document : texte imprimé Auteurs : Yehya A. Youssef, Auteur ; Reham Farouk, Auteur ; Aballa A. Mousa, Auteur ; Wael S. Mohamed, Auteur ; Elisabeth Giebel, Auteur ; Michael R. Buchmeiser, Auteur Année de publication : 2021 Article en page(s) : p. 668-677 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile Caractérisation Colorimétrie Essais de résilience Extrusion filage Fibres textiles -- Propriétés mécaniques Fils multifilaments Matériaux hybrides Mélanges-maîtres (chimie) Montmorillonite Nanoparticules Polypropylène Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Polypropylene (PP) nanocomposite fabrics containing different types of modified montmorillonite (MMT) nanoclays were prepared by a melt compounding technique. Spinnable polymers were obtained by mixing PP master batches with 4 wt% MMT, possessing either tallow amine or tallow quaternary ammonium salt intercalating compounds with a pure untreated PP to MMT content of 0.5 wt%. After spinning, the prepared nanocomposites were drawn and knitted into fabrics for further testing and dyeing. The prepared PP nanocomposite fabrics containing hydrogenated tallow quaternary ammonium-based organomodified nanoclays exhibited higher colour strength (K/S) using vat dyes compared with those containing either octadecylamine or trimethyloctadecyl ammonium-based organomodified nanoclays and reference fabrics made from fibres spun without MMT clay content. The investigated vat dyes yielded relatively high K/S values on PP nanocomposite fabrics with very good to excellent wash, excellent fastness to bleaching with chlorine, perspiration, and good to excellent light fastness ratings. Note de contenu : - EXPERIMENTAL : Materials - Equipment - Preparation of PP/MMT master batches - Spinning of PP/MMT filaments - Vat dyeing of PP nanocomposite and reference fabrics - Colour measurements - Fastness testing - RESULTS AND DISCUSSION : Mechanical properties of multifilament fibres - Characterisation of PP/MMT master batches - Effect of organoclays on the vat dyeing of PP nanocomposite fabrics - Colorimetric data - Fastness properties of dyed PP nanocomposite fabrics with vat dyes DOI : https://doi.org/10.1111/cote.12566 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12566 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36796 [article]

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Effects of ozone treatment on denim garment properties / Abir Ben Fraj in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 678-688 Titre : Effects of ozone treatment on denim garment properties Type de document : texte imprimé Auteurs : Abir Ben Fraj, Auteur ; Boubaker Jaouachi, Auteur Année de publication : 2021 Article en page(s) : p. 678-688 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire). Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia) Jeans Ozonation Plan d'expérience Résistance à l'abrasion Solidité de la couleur Stabilité dimensionnelle Taguchi, Méthodes de (Contrôle de qualité) Textiles et tissus -- Lavage Index. décimale : 667.3 Teinture et impression des tissus Résumé : The conventional denim washing process is considered to be the most polluting in the textile industry. This sector uses huge amounts of water, energy and chemicals, and generates a lot of wastewater with a high pollution load. For this reason, other types of washing treatment have been discovered. Among these treatments, we can specify the ozone treatment, which is sustainable and economical. In this study, ozone treatment was applied to denim fabric samples to improve the effect of the washing conditions on the appearance and physical characteristics of the fabrics. Bagging resistance, force at break, shrinkage, spectroscopy testing, rubbing fastness evaluation and Fourier Transform–infrared analysis of the treated and untreated denim fabrics (which did not undergo desizing treatment) were analysed and investigated. To study the individual and main effects and significance of input parameters, the Taguchi design was used. Based on the obtained results, ozone treatment increased the whiteness value of treated fabrics. Moreover, it induced certain changes to the physical, mechanical and bagging properties of denim fabrics. The loss of force at break and the percentage of shrinkage reached 30.11% and 15.15%, respectively. The bagging resistance indicated a significant decrease of up to 40.17% after ozone treatment. Note de contenu : - MATERIALS AND METHODS : Materials - Methods - Experimental design - RESULTS AND DISCUSSION : FTIR analysis - Effect of ozonation parameters on the breaking force - Effect of ozonation parameters on the dimensional stability - Effect of ozonation treatment on the bagging properties - Effect of ozone treatment on colour characteristics and rubbing fastness - Table 1 : Fabric characteristics - Table 2 : The recipe of treatment - Table 3 : Experimental design - Table 4 : Analysis of variance for mean breaking force in the warp direction - Table 5 : CIEL*a*b and colour fastness values of treated and untreated fabric with ozone DOI : https://doi.org/10.1111/cote.12568 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12568 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36797 [article]

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Comparison of the effect of metal mordants and bio-mordants on the colorimetric and antibacterial properties of natural dyes on cotton fabric / Fatemeh Shahmoradi Ghaheh in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 6 (12/2021) . - p. 689-698 Titre : Comparison of the effect of metal mordants and bio-mordants on the colorimetric and antibacterial properties of natural dyes on cotton fabric Type de document : texte imprimé Auteurs : Fatemeh Shahmoradi Ghaheh, Auteur ; Meghadad Kamali Moghddam, Auteur ; Majid Tehrani, Auteur Année de publication : 2021 Article en page(s) : p. 689-698 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens Biomordants Colorants végétaux Colorimétrie Coton Le 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). Etudes comparatives Evaluation Mordançage (teinture) Mordants (chimie) Solidité de la couleur Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The main objective of this study was to evaluate the effect of bio-mordants versus metal mordants in terms of colour measurement, colour fastness, and antibacterial properties of a natural dye extract (Hibiscus sabdariffa L.) on the cotton fabric. Accordingly, some bio-mordants including tannic acid, pine cone, lemon peel, and sodium alginate, as well as some metal mordants such as iron(II) sulphate, copper sulphate, zinc sulphate, and aluminium potassium sulphate were investigated based on three conventional mordanting procedures (pre-, meta- and after-mordanting). The method appropriate for H. sabdariffa dyeing on the cotton fabric, according to the colour fastness factor, was found to be the after-mordanting method. The bio-mordants used in this study, the same as metal salts, increased the colour fastness on the dyed cotton fabrics and produced excellent light fastness (rating of 5 to 6), wash fastness (rating of 4 to 5), and dry/wet rub fastness (rating of 4 to 5). The higher antibacterial activities (> 90% bacterial reduction) against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa were observed when tannic acid, pine cone, and lemon peel were applied to the dyed cotton fabric. The use of bio-mordants in the natural dyeing of the cotton fabric could be, therefore, recommended due to the biocompatibility and non-toxicity of natural mordants, along with excellent colour fastness and appropriate antibacterial properties. Note de contenu : - MATERIALS AND METHODS : Materials - Mordanting - Dyeing procedure - Colour characteristics - Colour fastness - Evaluation of the antibacterial activity of the fabric - RESULTS AND DISCUSSION : Colour characteristics of the premordanted fabric - Colour characteristics of the meta-mordanted fabric - Colour characteristics of the after-mordanted fabric - Colour strength of th edyed fabric - Antibacterial evaluation of the dyed cotton fabric fabric - Table 1 : Colour characteristics of the premordanted fabric - Table 2 : Colour characteristics of the cotton fabrics dyed by the meta-mordanting method - Table 3 : Colour characteristics of the cotton fabrics dyed by the after-mordanting method - Table 4 : Bacterial reduction (%) of the dyed cotton fabric DOI : https://doi.org/10.1111/cote.12569 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12569 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36798 [article]

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