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Progress towards a greener textile industry / Tim Dawson in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 1-8 Titre : Progress towards a greener textile industry Type de document : texte imprimé Auteurs : Tim Dawson, Auteur Année de publication : 2012 Article en page(s) : p. 1-8 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères Chimie écologique Fibres cellulosiques Fibres textiles synthétiques Textiles et tissus -- Aspect de l'environnement Textiles et tissus -- Industrie -- Aspect de l'environnement Index. décimale : 667.3 Teinture et impression des tissus Résumé : Many of the principles of the relatively new science of Green Chemistry, which aims to use resources efficiently and minimise waste, are applicable in the field of textiles. Improving product quantity and reducing environmental impact in the production and subsequent coloration of textile fibres is a realistic goal. Public interest in organically produced natural fibres has followed on from that in organically grown food, although the market for organic fibres is still relatively small. In recent years, fibre manufacturers have played their part in introducing a number of more ecologically regenerated cellulosic fibres, as well as new totally synthetic polymer fibres based on renewable raw materials. The methods that can be adopted aimed at reducing the environmental impact of fibre, dye manufacture and subsequent coloration processes, are described with particular reference to these newer fibres. Note de contenu : - ENERGY, WATER AND CHEMICAL CONSUMPTION IN THE FIELD OF TEXTILES : Research and development for more eco-friendly fibres : Natural fibres - Organic natural fibres - Other natural fibres - Synthetic cellulosic fibres - Modern regenerated cellulose fibres - Synthetic eco-fibres - Other polyester fibres - Polylactic acid fibre - IMPROVEMENTS TO TRADITIONAL DYEING METHODS : Textile processing equipment - Sulphur dyes - After-chrome dyes - Disperse dyes - Effluent treatment - FUTURE DEVELOPMENTS : Novel coloration systems DOI : 10.1111/j.1478-4408.2011.00346.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00346.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13090 [article]

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Dyeing wool with a sulphur black dye using a sodium borohydride /sodium bisulphite reducing system / Jackie Y. Cai in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 9-20 Titre : Dyeing wool with a sulphur black dye using a sodium borohydride /sodium bisulphite reducing system Type de document : texte imprimé Auteurs : Jackie Y. Cai, Auteur ; John A. Rippon, Auteur ; Jill McDonnell, Auteur ; Anne E. Parnell, Auteur Année de publication : 2012 Article en page(s) : p. 9-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bisulfite de sodium Borohydrure de sodium Le tétrahydruroborate de sodium, aussi appelé borohydrure de sodium, est un composé chimique constitué d'atomes de bore, de sodium et d'hydrogène. Sa formule brute est NaBH4. C'est un agent réducteur utilisé notamment dans l'industrie pharmaceutique en tant que source d'hydrures H-. C'est un solide blanc, souvent rencontré sous forme de poudre. Le borohydrure de sodium absorbe l'humidité de l'air (il est hygroscopique). Il réagit avec l'eau et dégage lentement du dihydrogène, un gaz inflammable/explosif. Selon la classification européenne des produits chimiques, il est enregistré avec la phrase de risque R14 "réagit violemment au contact de l'eau". Le produit se décompose à plus de 400 °C sans fondre. Sa décomposition est violente et exothermique avec l'eau. Colorants -- Stabilité Laine Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Sulphur dyes have been traditionally used for dyeing cellulosic materials, in particular for dark navy and black shades on cotton. This study investigates the feasibility of using the dyestuff CI Sulphur Black 1 as a cost-effective, metal-free alternative to reactive and chrome dyes, to produce deep black shades on wool with high fastness levels. The new wool dyeing procedure uses sodium borohydride and sodium bisulphite as the reducing system for the sulphur dyes. Results are presented on the colour parameters, fastness to washing, alkaline perspiration, light, dry and wet rubbing, and wet burst strength of wool fabrics after dyeing with the sulphur dye. The results have been compared with those of wool dyed by conventional methods with a chrome black and a reactive black dye. It has been shown that the sulphur dye can be used to produce a deep black shade on wool that is comparable with that obtained with either a reactive or chrome black dyestuff. With the exception of wet rubbing, the fastness properties are generally similar, or better than, those of the reactive and chrome dyes, but fibre damage is greater. Some further work is therefore required to overcome these two disadvantages. Note de contenu : - EXPERIMENTAL : Materials (fabric - Dyes and chemical) - Methods (Laboratory dyeing machine - Dyeing with Lanasol Black CE and Eriochrome Black PV 250% (CI Mordant Black 9) - Dyeing with Sulphur Black BR 200% (CI Sulphur Black 1) - Measurements - RESULTS AND DISCUSSION : Colour characteristics of wool dyed with Lanasol Black CE or Eriochrome Black PV 250% (CI Mordant Black 9) - Dyeing wool with Sulphur Black BR 200% (CI Sulphur Black 1) (Optimisation of dyeing conditions - Colour characteristics of wool dyed with Sulphur Black BR 200% (CI Sulphur Black 1)) Fastness properties of dyed wool fabrics - Wool fibre damage caused by dyeing DOI : 10.1111/j.1478-4408.2011.00333.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00333.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13091 [article]

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Removal of Erioglaucine (Acid Blue 9) with a new coagulant agent from Acacia mearnsii tannin extract / Jesùs Sànchez Martin in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 15-20 Titre : Removal of Erioglaucine (Acid Blue 9) with a new coagulant agent from Acacia mearnsii tannin extract Type de document : texte imprimé Auteurs : Jesùs Sànchez Martin, Auteur ; Jesùs Beltràn-Heredia, Auteur ; Teresa Rodríguez-Sánchez, Auteur Année de publication : 2012 Article en page(s) : p. 15-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants Biopolymères Erioglaucine Polymérisation Précipitation (chimie) Tanins végétaux Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : A new coagulant obtained through the polymerisation of Acacia mearnsii de Wild. tannin extract has been characterised in the removal of a dangerous dye pollutant: Erioglaucine (also called Acid Blue 9 or FD&C Blue 1). This coagulant was laboratory synthesised according to the etherification of tannins using glycidyltrimethylammonium chloride and formaldehyde and its performance in dye removal in terms of efficiency was high. Reasonably low coagulant dosages (ca. 50 mg l−1) reach high capacity levels (approximately 0.7 mg dye mg−1 of coagulant) and pH and temperature are not extremely affecting variables. A design of experiments using response surface methodology led to the evaluation of the influence of parameters such as coagulant dosage and initial dye concentration, and reliable data were collected in order to maximise the removal capacity. The whole coagulant-dye system was successfully modelled by applying the Langmuir hypothesis. Parameters qmax and b were obtained with an adjusted correlation factor (r2) above 0.8. Note de contenu : - EXPERIMENTAL : Coagulant syntheses - Buffered solution - Model compounds - General dyes removal trials - Mathematical and statistical procedures - RESULTS AND DISCUSSION : Preliminary screening on dye removal - Preliminary screening on dye removal - Operative factors - Design of experiments - Theoretical modelling DOI : 10.1111/j.1478-4408.2011.00342.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00342.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13092 [article]

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Adsorption characteristics of CI Basic Blue 3 from aqueous solution onto Aleppo pine-tree sawdust / Naima Ouazene in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 21-27 Titre : Adsorption characteristics of CI Basic Blue 3 from aqueous solution onto Aleppo pine-tree sawdust Type de document : texte imprimé Auteurs : Naima Ouazene, Auteur ; Azzedine Lounis, Auteur Année de publication : 2012 Article en page(s) : p. 21-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants Colorants -- Adsorption Pin d'Alep Sciure de bois Solutions aqueuses (chimie) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Aleppo pine-tree sawdust, a forest waste abundantly available in Algeria, was used for the adsorption of CI Basic Blue 3 from an aqueous solution. The effects of adsorbent dosage, pH, adsorbate concentration and contact time were studied. The equilibrium adsorption data were analysed by Langmuir, Freundlich and Temkin isotherm models. It was found that the Langmuir isotherm fitted well to the observed data for CI Basic Blue 3 adsorption onto Aleppo pine-tree sawdust based on the correlation coefficient R2 and four different error functions for the non-linear regression. The adsorption capacity of Aleppo pine-tree sawdust for CI Basic Blue 3 was determined with the Langmuir model and was found to be 65.36 mg g−1 at 293 K. The adsorption kinetic data were modelled using the pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic equations. It was seen that the pseudo-second-order equation could describe the adsorption kinetics and intraparticle diffusion was not the sole rate-controlling factor. The results indicated that Aleppo pine-tree sawdust is an attractive alternative for removing cationic dyes from wastewater. Note de contenu : - EXPERIMENTAL : Materials - Batch adsorption studies - Error analysis - RESULTS AND DISCUSSION : Characterisation of the adsorbent - Effect of contact time and initial dye concentration - Effect of adsorbent dosage - Effect of pH - Adsorption isotherms - Kinetic studies - Adsorption mechanisms - Evaluation of Aleppo pine-tree sawdust as an adsorbent DOI : 10.1111/j.1478-4408.2011.00327.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00327.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13093 [article]

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Degradation of azo dye by the fluidised-bed Fenton process / Massakul Pukdee-Asa in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 28-35 Titre : Degradation of azo dye by the fluidised-bed Fenton process Type de document : texte imprimé Auteurs : Massakul Pukdee-Asa, Auteur ; Chia-Chi Su, Auteur ; Chavalit Ratanatamskul, Auteur ; Ming-Chun Lu, Auteur Année de publication : 2012 Article en page(s) : p. 28-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Détérioration Colorants azoïques Fenton, Réaction de Fluidisation Index. décimale : 667.6 Peintures Résumé : A fluidised-bed Fenton process was utilised for the homogeneous and heterogeneous Fenton degradation of three azo dyes: CI Reactive Black 5, CI Reactive Orange 16 and CI Reactive Blue 2. The effects of the concentration of Fe2+ and hydrogen peroxide on the decolorisation and degradation of the azo dyes were examined. More than 96% of colour removal of the azo dyes was achieved using the fluidised-bed Fenton process. Chemical oxygen demand (COD) removal of the three azo dyes followed pseudo-second-order kinetics at various Fe2+ and hydrogen peroxide concentrations. COD removal of the three azo dyes increased with increasing Fe2+ concentration and was more than 85%. In addition, the COD removal efficiency of the three types of azo dyes first increased and then decreased as the hydrogen peroxide concentration increased. Presumably, the scavenging effect of hydrogen peroxide on hydroxyl radicals occurs at high concentrations of hydrogen peroxide. The most efficient COD removal was found at 160–220 mg/l hydrogen peroxide. More than 80% of the COD was eliminated at pH 3 in 20 mg/l Fe2+ and 160 mg/l hydrogen peroxide for CI Reactive Black 5, 25 mg/l Fe2+ and 160 mg/l hydrogen peroxide for CI Reactive Orange 16 and 20 mg/l Fe2+ and 160 mg/l hydrogen peroxide for CI Reactive Blue 2. Note de contenu : - EXPERIMENTAL : Materials - Methods and reactor - RESULTS AND DISCUSSION : Effect of different carriers on the removal of azo dyes - Effect of Fe2+ and hydrogen peroxide concentrations - Comparison of COD removal efficiency DOI : 10.1111/j.1478-4408.2011.00325.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00325.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13094 [article]

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Reuse of the water and salt of reactive dyeing effluent after electrochemical decolorisation / Víctor López-Grimau in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 36-43 Titre : Reuse of the water and salt of reactive dyeing effluent after electrochemical decolorisation Type de document : texte imprimé Auteurs : Víctor López-Grimau, Auteur ; María del Carmen Gutiérrez-Bouzàn, Auteur ; José Valldeperas, Auteur ; Martí Crespi, Auteur Année de publication : 2012 Article en page(s) : p. 36-43 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bains de teinture -- Recyclage Chlorure de sodium Le chlorure de sodium est un composé chimique de formule NaCl. On l'appelle plus communément sel de table ou de cuisine, ou tout simplement sel dans le langage courant. C'est le principal produit dissous dans l'eau de mer ; on l'appelle alors sel marin. On l'obtient : dans des marais salants par évaporation de l'eau de mer, dans des mines, par extraction du sel gemme (halite) ou en le synthétisant lors de réactions à hautes températures entre du dichlore (Cl2) et du sodium métallique (Na). Le chlorure de sodium est utilisé dans l'industrie chimique pour produire du chlore, de la soude caustique et de l’hydrogène. Colorants réactifs Eaux usées -- Recyclage Eaux usées -- Teneur en sels Electrolytes Fibres cellulosiques Sulfate de sodium Le sulfate de sodium est un composé chimique courant formé d'un ion sulfate et de deux ions sodium. Lorsqu'il est anhydre, il prend l'apparence d'un solide cristallin blanc de formule chimique Na2SO4. La forme déca-hydratée, Na2SO4·10H2O, est connue sous le nom de sel de Glauber ou mirabilite. Parmi un grand nombre d'usages différents, les principales utilisations du sulfate de sodium concernent la fabrication des détergents et dans le procédé de Kraft de traitement de la pâte à papier. La moitié environ de la production mondiale provient de l'extraction de la forme naturelle décahydratée, et l'autre moitié de productions secondaires dans des procédés de l'industrie chimique. Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : In the dyeing of cellulose with reactive dyes, the addition of a high amount of electrolyte is required [50–80 g/l of sodium chloride (NaCl) or sodium sulphate (Na2SO4)]. The main goal of this work is the reuse of salt and water from exhausted dyebaths and washing effluents, which have been previously decolorised by means of an electrochemical treatment. Dyeings with three bifunctional reactive dyes (Navy Blue, Crimson and Yellow Procion H-EXL) were carried out individually and in a trichromatic mixture. The reuse of the discoloured exhausted dyebath provided excellent red and yellow dyeings. Colour differences close to the quality control limit (ΔECMC(2:1) ≤ 1) were obtained in the blue and trichromatic dyeings. An average recovery of 70% of water and 60% of salt was achieved with the reuse process. High-quality dyeings were also obtained with the discoloured first-washing bath. In this case, 15% of salt and almost 100% of water were recycled. Note de contenu : - EXPERIMENTAL : Dyeing procedure - Parameters studied in dyeing and washing effluents - Electrochemical decolorisation - Parameters to evaluate the reuse process - RESULTS AND DISCUSSION : Characterisation of dyeing and washing baths - Electrochemical decolorisation- Reuse of discoloured dyebaths - Salt recovery - Organic matter content - Colour fastness to water - Reuse of the discoloured first-washing bath DOI : 10.1111/j.1478-4408.2011.00343.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00343.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13095 [article]

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Investigation into photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder / Fiona Chai Foong Low in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 44-50 Titre : Investigation into photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder Type de document : texte imprimé Auteurs : Fiona Chai Foong Low, Auteur ; Ta Yeong Wu, Auteur ; Chee Yang Teh, Auteur ; Joon Ching Juan, Auteur ; N. Balasubramanian, Auteur Année de publication : 2012 Article en page(s) : p. 44-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs Décoloration Dioxyde de titane Nanoparticules Photocatalyse Photodétérioration Index. décimale : 667.3 Teinture et impression des tissus Résumé : The photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder as a catalyst was studied and the results obtained are discussed in terms of its decolorisation efficiency. All experiments were performed using a double-walled quartz immersion well batch reactor in which the slurry form of the reactants was at its natural pH of 5.1. The performance of titanium dioxide nanopowder (size <25 nm; surface area 200–220 m2/g) was compared with that of reference titanium dioxide powder (size ca. 230 nm; surface area 11 m2/g); in both cases, the titanium dioxide samples were anatase. It was found that the photocatalytic decolorisation efficiencies obtained using titanium dioxide nanopowder were higher than those of the reference titanium dioxide powder, with the latter taking approximately 8 min longer to achieve almost complete decolorisation of 10 mg/l CI Reactive Black 5. The photocatalytic decolorisation rate of CI Reactive Black 5 using both titanium dioxide photocatalysts typically followed a first-order reaction and the decolorisation kinetics were successfully fitted to a simplified Langmuir–Hinshelwood kinetic model. In addition, the effects of light type and intensity, catalyst loading and initial CI Reactive Black 5 concentration were investigated using titanium dioxide nanopowder as the photocatalyst in the decolorisation of the dye. This study shows that the recommended parameters for treating 10 mg/l CI Reactive Black 5 based on the experimental set-up and operating conditions are an ultraviolet light power of 125 W (39.3 mW/cm2) and a 0.3-g/l catalyst loading. Note de contenu : - EXPERIMENTAL : Photoreactor - Reagents - Procedure and analysis - RESULTS AND DISCUSSION : Photolysis control experiment - Comparison of titanium dioxide photocatalysts and reaction kinetics - Effects of light type and intensity - Effect of catalyst amount - Effect of initial dye concentration DOI : 10.1111/j.1478-4408.2011.00326.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00326.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13096 [article]

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Effects of molecular structure on dyeing performance and colour fastness of yellow dyestuffs applied to polypropylene fibres in supercritical carbon dioxide / Keisuke Miyazaki in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 51-59 Titre : Effects of molecular structure on dyeing performance and colour fastness of yellow dyestuffs applied to polypropylene fibres in supercritical carbon dioxide Type de document : texte imprimé Auteurs : Keisuke Miyazaki, Auteur ; Isao Tabata, Auteur ; Teruo Hori, Auteur Année de publication : 2012 Article en page(s) : p. 51-59 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Stabilité Dioxyde de carbone Fluides supercritiques Polypropylène Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Thirteen dyestuffs of four chemical classes (quinophthalone, anthraquinone, isothiazole-fused anthrone and pyridone azo) were applied for the dyeing of unmodified polypropylene fibres in supercritical carbon dioxide. From these 13 dyestuffs, three dyestuffs that have a pure yellow hue and good dyeability for polypropylene fibres were found. The results of a dyeability test using the 13 dyestuffs suggested that the affinity for polypropylene fibres requires, in the structural character of the dyestuff molecule, not only extreme hydrophobicity but also high aliphaticity. The isothiazole-fused anthrone nonanamide dyestuff and two types of N-butyl substituted pyridone azo dyestuffs were examined for build-up and colour fastness properties. The light fastness of the dyed fabric was not so good. The ratings of fastness to washing, perspiration and rubbing ranged from excellent to fairly good with the increase of the depth of shade. From the relationship between the build-up curve and the colour fastness, it was found that the dyestuff of the isothiazole-fused anthrone nonanamide is suitable for polypropylene dyeing in a pale or medium shade, and that the two types of N-butyl substituted pyridone azo dyestuffs are suitable in a deep shade. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Dyeability and structural character of dyestuff molecules - Colour strength - Colour fastness DOI : 10.1111/j.1478-4408.2011.00344.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00344.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13097 [article]

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Relationship between colour fastness and colour strength of polypropylene fabrics dyed in supercritical carbon dioxide: effect of chemical structure in 1,4-bis(alkylamino)anthraquinone dyestuffs on dyeing performance / Keisuke Miyazaki in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 60-67 Titre : Relationship between colour fastness and colour strength of polypropylene fabrics dyed in supercritical carbon dioxide: effect of chemical structure in 1,4-bis(alkylamino)anthraquinone dyestuffs on dyeing performance Type de document : texte imprimé Auteurs : Keisuke Miyazaki, Auteur ; Isao Tabata, Auteur ; Teruo Hori, Auteur Année de publication : 2012 Article en page(s) : p. 60-67 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anthraquinone Colorants -- Stabilité Couleurs -- Stabilité Dioxyde de carbone Fluides supercritiques Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A series of 1,4-bis(alkylamino)anthraquinone dyestuffs were applied for supercritical fluid dyeing of unmodified polypropylene fabric, which is known to be difficult to dye in a conventional aqueous system. A marked tendency was shown that the dyeability improved as the carbon number of alkyl substituents on the anthraquinone chromophore increased. By evaluating the build-up curves of the dyestuff, it was found that the carbon number of optimum alkyl chain length for 1,4-bis(alkylamino)anthraquinone was 8–12. From the relationship between the build-up curve and the colour fastness, it was concluded that the upper limit of dyeing depth for good colour fastness was 40 mmol/kg of fibre. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Dyeability - Colour Strength - Colour fastness DOI : 10.1111/j.1478-4408.2011.00331.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00331.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13098 [article]

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Improving light fastness of natural dye : photostabilisation of gardenia blue / Hironori Oda in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 68-73 Titre : Improving light fastness of natural dye : photostabilisation of gardenia blue Type de document : texte imprimé Auteurs : Hironori Oda, Auteur Année de publication : 2012 Article en page(s) : p. 68-73 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bleu de Gardénia Colorants -- Stabilité Colorants végétaux Fibres cellulosiques Photostabilité Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The photofading behaviour of gardenia blue on cellulose was investigated. A contribution of auto-oxidation and singlet oxygen to that fading was suggested. The inhibiting effect of phenyl ester ultraviolet absorbers towards the photofading of gardenia blue was examined on cellulose. It has been found that the presence of a simple ultraviolet absorber is not of particular value in improving the light fastness of natural dye. The introduction of a singlet oxygen quenching group into an ultraviolet absorber can, however, have an important effect. The nickel complex of 1-benzoyloxynaphthalene-3-sulphonic acid was very effective in reducing the rate of photofading. Note de contenu : - EXPERIMENTAL : Materials - General procedure for photofading of gardenia blue - Assessment of antibacterial activity - RESULTS AND DISCUSSION : effect of various additives on the photofading of gardenia blue - effect of phenyl ester-type UV absorbers on the photostability of gardenia blue - Effect of UV absorbers bearing the nickel sulphonate group on the light fastness of colour - Antibacterial activity of new stabilisers DOI : 10.1111/j.1478-4408.2011.00324.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00324.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13099 [article]

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13529	-	Périodique	Bibliothèque principale	Documentaires	Disponible