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Supercritical fluid dyeing of synthetic and natural textiles – a review / Mauro Banchero in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 2-17 Titre : Supercritical fluid dyeing of synthetic and natural textiles – a review Type de document : texte imprimé Auteurs : Mauro Banchero, Auteur Année de publication : 2013 Article en page(s) : p. 2-17 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de carbone Fibres naturelles Fluides supercritiques Polyéthylène téréphtalate Teinture -- Fibres textiles Transfert de masse Index. décimale : 667.3 Teinture et impression des tissus Résumé : Supercritical fluid dyeing is an interesting alternative to the conventional aqueous process because of its environmental benefits. The aim of the paper is to provide the reader with an up-to-date overview of this subject, covering various aspects, such as the solubility and equilibrium partitioning of the dyes, mass transfer phenomena and solvent–polymer interactions occurring during coloration, up to the most recent reports on the technology of the dyeing process. Even though the best results have been obtained in the coloration of synthetic textiles, particular attention is given to the dyeing of natural textiles, which is, at the moment, the limiting step of this technology. Note de contenu : - SOLUBILITY OF DYES IN scCO2 - INTERACTIONS BETWEEN scCO2 and polymer - EQUILIBRIUM DYE PARTIONING BETWEEN FIBRES AND scCO2 - MASS TRANSFER PHENOMENA IN THE POLYMER AND IN scCO2 - THE TECHNOLOGY OF THE SUPERCRITICAL DYEING PROCESS - A FOCUS ON PET : Uniformity of dye distribution - Dyeing with dye mixtures - The washing step (post-dyeing) - Removal of oligomers - Alternative technologies - SUPERCRITICAL DYEING OF OTHER SYNTHETIC FIBRES - SUPERCRITICAL DYEING OF NATURAL FIBRES : Solubilisation of polar dyes in scCO2 - the reverse micellar technique - Use of disperse reactive dyes DOI : 10.1111/cote.12005 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12005/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17181 [article]

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Textiles screen-printed with photochromic ethyl cellulose–spirooxazine composite nanoparticles in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 18-23 Titre : Textiles screen-printed with photochromic ethyl cellulose–spirooxazine composite nanoparticles Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 18-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : 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). Nanoparticules Pâtes d'impression Photochromes Photochromisme Sérigraphie Spirooxazine Teinture -- Fibres textiles Textiles et tissus imprimés Index. décimale : 667.3 Teinture et impression des tissus Résumé : Photochromic compounds change colour on exposure to light, while the reversion may be attributable either to radiation or may be thermal. The use of photochromism on fabrics can provide new opportunities to develop smart textiles; for example, sensors and active protective clothes. Ethyl cellulose-1,3-dihydro-1,3,3,4,5 (and 1,3,3,5,6) -pentamethyl-spiro-[2H-indole-2,3′-(3H)naphtha(2,1-b)(1,4)oxazine] composites were prepared by an oil-in-water emulsion, solvent evaporation method in order to form easily suspendable and fatigue-resistant photochromic nanoparticles in screen-printing paste. Their size was well below 1 μm and did not change substantially over a wide range of dye concentrations. After screen-printing, a homogenous photochromic layer was built on a cotton substrate surface, which represented substantial blue colour development in CIELab colour space measurements because of ultraviolet light, even at a dye concentration of 0.045% w/w. The addition of a photodegradation inhibitor, Tinuvin 144, further increased the coloration of the printed fabric. Note de contenu : - EXPERIMENTAL : Materials - Preparation of photochromic nanocapsules - Preparation of the printing pastes, printing and fixation process - Measuring methods - RESULTS AND DISCUSSION : Size of photochromic nanoparticles - Spectral characteristics of UV source and photochromic nanoparticle dispersions - Characteristics of prints containing photochromic nanocapsules - Evaluation of the photochromic fabrics DOI : 10.1111/j.1478-4408.2012.00404.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00404.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17182 [article]

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An analysis of the substantivity of hydrolysed reactive dyes and its implication for rinsing processes / Martin Ferus-Comelo in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 24-31 Titre : An analysis of the substantivity of hydrolysed reactive dyes and its implication for rinsing processes Type de document : texte imprimé Auteurs : Martin Ferus-Comelo, Auteur Année de publication : 2013 Article en page(s) : p. 24-31 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs Electrolytes Hydrolyse Rinçage Sulfatoéthylsulfone Teinture -- Fibres textiles Textiles et tissus Index. décimale : 667.3 Teinture et impression des tissus Résumé : Substantivity plays a key role in dyeing processes, for dye exhaustion and fixation as well as for dye removal during rinsing. The latter is especially relevant for reactive dyes when the hydrolysed dye has to be removed from the fibre. The substantivity of the hydrolysed form of 46 commercially important reactive dyes was analysed at two temperatures for a wide range of dye amounts, pH values and electrolyte concentrations. The results showed that substantivity was highly dye-specific and varied, for each variable analysed, almost within the entire theoretically possible range of values. Substantivity values correlated best with the number of sulphatoethylsulphone groups in the dye molecule and dye solubility in the presence of sodium chloride. Sensitivity to electrolyte, pH, dye amount and temperature broadly correlated with each other, implying that a reduction in electrolyte concentration and an increase in pH and temperature are more beneficial in the removal of highly substantive reactive dyes. Some dyes remained highly substantive even at 90 °C, indicating that dye removal in industrial processes, too, would be difficult. For dyes with little substantivity, however, wash baths at the boil do not appear to be necessary, neither is the significant removal of electrolyte before rinsing at elevated temperature. Note de contenu : - Theoretical - RESULTS AND DISCUSSION : Influence of electrolyte concentration - Influence of dye amount - Influence of temperature DOI : 10.1111/j.1478-4408.2012.00405.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00405.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17183 [article]

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Extraction of natural dyes from Alpinia blepharocalyx K. Schum. for dyeing of silk fabric / Chunxia Wang in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 32-38 Titre : Extraction of natural dyes from Alpinia blepharocalyx K. Schum. for dyeing of silk fabric Type de document : texte imprimé Auteurs : Chunxia Wang, Auteur ; Changhai Xu, Auteur ; Anli Tian, Auteur ; Shaohai Fu, Auteur ; Chaoxia Wang, Auteur Année de publication : 2013 Article en page(s) : p. 32-38 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alun Colorants végétaux Extraction (chimie) Hydroxyde de sodium L'hydroxyde de sodium, appelé également soude caustique7, est un corps chimique composé minéral de formule chimique NaOH, qui est à température ambiante un solide ionique. Fusible vers 318 °C, il se présente généralement sous forme de pastilles, de paillettes ou de billes blanches ou d'aspect translucide, corrosives et très hygroscopiques. Il est très soluble dans l'eau et légèrement soluble dans l'éthanol. La solution d'hydroxyde de sodium, souvent appelée soude, est une solution aqueuse transparente. Concentrée, elle est corrosive et souvent appelée lessive de soude. Les propriétés chimiques de l'hydroxyde de sodium sont surtout liées à l'ion hydroxyde HO- qui est une base forte. En outre, l'hydroxyde de sodium réagit avec le dioxyde de carbone (CO2) de l'air et se carbonate. La solubilité de la soude caustique dans l'eau augmente avec la température, à pression constante ou ambiante. Soie et constituants Sulfate de potassium Teinture -- Fibres textiles Ultrasons Index. décimale : 667.3 Teinture et impression des tissus Résumé : Natural dyes were extracted from the leaves and stems of Alpinia blepharocalyx K. Schum. Analysis of the designed experiment revealed that extraction at a plant/water ratio of 1:20 could reach an optimal production of natural dyes when extraction was performed at 80 °C, for 4 h, under 20 min ultrasound, in the presence of 10 g/l sodium hydroxide, and with two extractions. The extracted natural dyes were applied to the dyeing of silk fabrics using different methods, including or excluding a mordant. It was found that mordants had a significant effect on the colour of dyed silk fabrics. The silk fabric dyed with the pre-mordant method using potassium aluminium sulphate as a mordant showed a bright yellow with a higher colour strength. The optimal dyeing conditions were reached when the extracted natural dyes were pre-mordanted with 10 g/l potassium aluminium sulphate at pH 6, and for a 20 min dyeing time. Note de contenu : - EXPERIMENTAL : Materials - Extraction - Dyeing - Measurements - RESULTS AND DISCUSSION : Dye extraction - Dyeyng of silk fabric with the extracted natural dyes DOI : 10.1111/j.1478-4408.2012.00407.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00407.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17184 [article]

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Carrier dyeing of polyphenylene sulphide fabric with disperse dye in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 39-48 Titre : Carrier dyeing of polyphenylene sulphide fabric with disperse dye Type de document : texte imprimé Année de publication : 2013 Article en page(s) : p. 39-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Benzoate de benzyle Calorimétrie Colorants Diffractométrie de rayons X Dispersions et suspensions Polysulfures de phénylène Structure cristalline (solide) Teinture -- Fibres textiles synthétiques Transition vitreuse Index. décimale : 667.3 Teinture et impression des tissus Résumé : Polyphenylene sulphide is considered to be a high-performance thermoplastic material and has been used in many areas over the past few decades. But the application of polyphenylene sulphide fabric used for protective clothing is limited because of difficulties in its dyeing and printing. In this work, carrier dyeing of polyphenylene sulphide fabric with disperse dye is discussed, and the effect of the structure of the carrier, dyeing temperature, dyeing time, usage of carrier and usage of dye on colour strength of the dyed sample and the percentage of dye exhaustion were investigated. In addition, the glass transition temperature, crystalline structure and orientation degree of treated polyphenylene sulphide fibre with benzyl benzoate were measured by differential scanning calorimetry, X-ray diffraction analysis and velocity-oriented tester, respectively. The results indicated that benzyl benzoate could increase the percentages of dye exhaustion and colour strength values, while at the same time reduce the glass transition temperature and orientation degree of the treated polyphenylene sulphide fibre. Thus, it would be beneficial to the diffusion of the dye molecules into the amorphous region of the fibre. Furthermore, the decrease of tensile strength and limiting oxygen index of the dyed polyphenylene sulphide sample was very little, and the colour fastness and levelness of the dyed polyphenylene sulphide samples were also satisfactory. Note de contenu : - EXPERIMENTAL : Materials - Dyeing - Measurements of colour strength and levelness of the dye samples - Measurements of dye exhaustion - Thermal analysis - X-ray diffraction analysis - Measurements of degree of orientation - Measurement of tensile strength and fastness - RESULTS AND DISCUSSION : Effect of the different carriers on the K/S value of the dyed sample - Effect of the dyeing conditions on the dyeability of PPS fabric - Effect of the carrier on the thermal property of PPS - Effect of the carrier on the structure of PPS fibre - Effect of the dyeing process on the dyed fabric DOI : 10.1111/cote.12000 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12000/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17185 [article]

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Nonionic surfactants and dispersants for biopolishing and stonewashing with Hypocrea jecorina cellulases / Luana Zilz in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 49-54 Titre : Nonionic surfactants and dispersants for biopolishing and stonewashing with Hypocrea jecorina cellulases Type de document : texte imprimé Auteurs : Luana Zilz, Auteur ; Martinho Rau, Auteur ; Nelson Budag, Auteur ; Mauro Scharf, Auteur ; Artur M. Cavaco-Paulo, Auteur ; Jürgen Andreaus, Auteur Année de publication : 2013 Article en page(s) : p. 49-54 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Cellulases Une cellulase est une enzyme qui peut décomposer la cellulose. Les cellulases sont classées EC 3.2.1.4. Elles sont produites typiquement par des bactéries, levures et de protozoaires, qui jouent un rôle majeur dans la digestion des animaux, et transformation de la matière organique végétale en humus dans le sol. Elles ont aussi des applications biotechnologiques et industrielles. Colorants -- Adsorption 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). Indigo Polyvinylpyrrolidone Surfactants Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Cellulases are widely applied in textile finishing, such as for the removal of protruding surface fibrils to reduce pilling propensity and to achieve the worn-out look in denim garments. The main drawback of enzymatic denim processing is the back-staining of indigo, which reduces the desired blue–white contrast. Alongside an accurate selection of the type of cellulase or vigorous post-washing of the garments, the simultaneous application of auxiliaries in the enzymatic treatment may help to reduce back-staining and improve cellulase efficiency. In the present work, the influence of additives such as surfactants and dispersing agents on indigo adsorption and on the treatment of an undyed cotton fabric with Hypocrea jecorina cellulases was investigated. Indigo adsorption was successfully reduced by more than 75% with ethoxylated nonionic surfactants at concentrations below 0.2 g l−1. The weight loss of cotton fabrics after 120 min treatment was significantly increased with nonionic surfactants and polyvinylpyrrolidone. It could be further shown that protein adsorption on the cotton fabric decreased with the increasing concentration of the additives, while the nonionic surfactants were more efficient than the polyvinylpyrrolidone. Adsorption of a complete cellulase mixture was affected differently by the surfactants than by an exoglucanase-free endoglucanase-rich preparation. Note de contenu : - EXPERIMENTAL : Indigo adsorption on cotton fabrics in the presence of additives - Enzymatic treatments - RESULTS AND DISCUSSION : Indigo adsorption on cotton fabric in the presence of additives - Influence of additives on enzyme treatment of cotton fabric - Influence of additives on protein adsorption DOI : 10.1111/cote.12003 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12003/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17186 [article]

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Digital and conventional printing and dyeing with the natural dye annatto: optimisation and standardisation processes to meet future demands / Georgios Savvidis in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 55-63 Titre : Digital and conventional printing and dyeing with the natural dye annatto: optimisation and standardisation processes to meet future demands Type de document : texte imprimé Auteurs : Georgios Savvidis, Auteur ; Maria Zarkogianni, Auteur ; Evangelos Karanikas, Auteur ; Nikolaos Lazaridis, Auteur ; Nikolaos F. Nikolaidis, Auteur ; Eforia G. Tsatsaroni, Auteur Année de publication : 2013 Article en page(s) : p. 55-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alun Colorants végétaux 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). Impression numérique Impression sur étoffes Mordançage (teinture) Rhéologie Rocou Sérigraphie Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The plant colorant annatto was investigated to determine its potential use as a natural dye for conventional and novel textile applications. Alum was selected as a mordant. Different techniques of mordanting and a broad set of variations in the dyeing recipes were applied to achieve optimisation and an improvement in colour fastness properties. Quality control of all dyeings was performed using standard fastness tests and colour measurements. Printing of cotton fabrics was also achieved with annatto using the flatbed screen-printing technique. Measurement of the rheological and physical properties of the annatto printing paste confirmed its stability and suitability for conventional printing. Fastness properties of the conventionally printed annatto fabric were also measured. A novel water-based digital printing ink using annatto was prepared and applied to cotton fabric using a digital printing application. The physical properties of the annatto ink-jet ink were also measured. Wash, light and rub fastness properties of the annatto digitally printed fabric were determined and compared with those of conventional printing methods. The results were promising for annatto as a natural colorant, which possibly paves the way for the development of a new range of natural environmentally friendly dyes. Note de contenu : - EXPERIMENTAL : Materials - Apparatus - Solubility test of the annatto sample - Mordanting - Dyeing - Printing - Colour measurement - Fastness determination - Viscosity, conductivity, surface tension and pH measurement - RESULTS AND DISCUSSION : Dyeing - Conventional printing - Ink-jet printing DOI : 10.1111/cote.12004 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12004/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17187 [article]

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Encapsulation of textile dyes and textile auxiliary agents into liposome systems and their use for polyamide dyeing / Petr Prichystal in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 64-68 Titre : Encapsulation of textile dyes and textile auxiliary agents into liposome systems and their use for polyamide dyeing Type de document : texte imprimé Auteurs : Petr Prichystal, Auteur ; Ladislav Burgert, Auteur ; Radim Hrdina, Auteur ; Nasanjargal Purev, Auteur ; Michal Cerny, Auteur Année de publication : 2013 Article en page(s) : p. 64-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides Encapsulation Liposomes Polyamides Un polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine. Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères. Sulfate d'ammonium Teinture -- Fibres textiles synthétiques Tricot Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this study was verification of the effect on the dyeing process of using microencapsulated forms of textile dyes and a textile auxiliary agent. Anionic dyes and ammonium sulphate were microencapsulated into the liposomic systems. Prepared liposomes were used for the dyeing of polyamide knitted goods. The ability of these microencapsulated forms to improve the uniformity of polyamide knitted goods dyeing was confirmed. This finding could be applied to the dyeing of polyamide substrates on an industrial scale, especially as the described process of microencapsulation is straightforward and could be performed in an industrial environment. Note de contenu : - EXPERIMENTAL : Materials - Preparative methods - Measurements and analysis - RESULTS AND DISCUSSION : Encapsulation of acid dyes and textile auxiliary product - Application of liposomes for dyeing of polyamide knitted goods DOI : 10.1111/cote.12002 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12002/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17188 [article]

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Degradation of CI Reactive Red 141 by heterogeneous Fenton-like process over iron-containing ZSM-5 zeolites / Yadigar C. Yaman in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - 69-75 Titre : Degradation of CI Reactive Red 141 by heterogeneous Fenton-like process over iron-containing ZSM-5 zeolites Type de document : texte imprimé Auteurs : Yadigar C. Yaman, Auteur ; Gönül Gündüz, Auteur ; Meral Dükkanci, Auteur Année de publication : 2013 Article en page(s) : 69-75 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Catalyseurs Colorants -- Détérioration Colorants -- Oxydation Colorants réactifs Fenton, Réaction de Fer Peroxyde d'hydrogène Le peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales. Zéolites Index. décimale : 667.3 Teinture et impression des tissus Résumé : The Fenton-like oxidation of CI Reactive Red 141 was investigated over iron-containing ZSM-5 zeolites. Iron was loaded by ion exchange or through hydrothermal synthesis. The oxidation process was carried out in an aqueous solution using hydrogen peroxide as the oxidant. The catalyst prepared by ion exchange with a silicon/aluminium ratio of 42 zeolite showed the highest activity (97% decolorisation and 52% chemical oxygen demand reduction at an initial pH of 3.5) after an oxidation duration of 2 h. The chemical oxygen demand reduction increased with the increasing amount of iron loaded to the zeolite. The FeZSM-5 catalyst, prepared by hydrothermal synthesis in the presence of oxalic acid, showed very good activity in terms of mineralisation (99% of chemical oxygen demand reduction). The iron leaching was noticeably low (below the European Union directives of 2 mg dm−3) for the above-mentioned catalysts. Note de contenu : - EXPERIMENTAL : Materials - Catalyst preparation - Catalyst characterisation - Catalytic activity tests - RESULTS AND DISCUSSION : X-ray diffraction studies - Scanning electron microscopy studies - FTIR studies - Nitrogen adsorption studies - Chemical composition of the ZSM-5 samples - Temperature-programmed reduction with hydrogen studies - Heterogeneous Fenton-like oxidation studies of CI Reactive Red 141 over the catalysts prepared DOI : 10.1111/cote.12001 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12001/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17189 [article]

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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]  inCOLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - p. 76-81 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 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). Eaux usées -- Analyse Electrolytes Essais dynamiques Résistance au lavage Teinture -- Fibres textiles Traction (mécanique) Trisodium nitrilotriacétate Index. 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 chemicals DOI : 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17190 [article]

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14552	-	Périodique	Bibliothèque principale	Documentaires	Disponible