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A study on the effect of bulk water content and drying temperature on the colour of dyed cotton fabrics / Muthusamy Senthilkumar in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 145-152 Titre : A study on the effect of bulk water content and drying temperature on the colour of dyed cotton fabrics Type de document : texte imprimé Auteurs : Muthusamy Senthilkumar, Auteur ; Natarajan Selvakumar, Auteur Année de publication : 2011 Article en page(s) : p. 145-152 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Teinture -- Fibres textiles Textiles et tissus -- Séchage Textiles et tissus -- Teneur en eau Index. décimale : 667.3 Teinture et impression des tissus Résumé : In the present study, the effect of various levels of bulk and free water content and its distribution on the colour of cotton fabrics dyed with direct dyes and their combinations were analysed. Twill and plain structures with two different parameters of fabric construction were chosen. The dyed samples were adjusted to different levels of wet pick-up, with water ranging from 50% to 125% on the bone dry weight of the fabric (odwf) to achieve various levels of bulk water content. Further, the residual moisture content of the samples was adjusted to 40–10% odwf by means of hot air drying at different temperatures to obtain different levels of free water content and its distribution. For the assessment of colour and its comparison, the parameters ΣK/S and inline image values were used. In order to bring out the true effect of moisture distribution and fabric structure, normalisation of dye uptake in the fabric based on weight and area were considered, respectively. The plain structures show a higher increase in colour than the twill structures when the bulk water content increases. At the same time, the fabric structures do not play a significant role, with increase in colour attributable to change in drying temperature. The findings reveal that the bulk water content, drying temperature and fabric geometry affects the colour of the fabric significantly. Note de contenu : - Effect of bulk water content on the colour of the fabric - Effect of drying temperature on the colour of fabric with residual moisture content - Effect of water content on the colour of fabrics with identical dye uptake - Effect of water content on the colour of fabric with different structures DOI : 10.1111/j.1478-4408.2011.00290.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00290.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12188 [article]

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A study on the dyeing characteristics and electrochemical behaviour of lawsone–indigo mixtures / Sunsanee Komboonchoo in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 153-158 Titre : A study on the dyeing characteristics and electrochemical behaviour of lawsone–indigo mixtures Type de document : texte imprimé Auteurs : Sunsanee Komboonchoo, Auteur ; Thomas Bechtold, Auteur Année de publication : 2011 Article en page(s) : p. 153-158 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Electrochimie Indigo Laine Lawsone Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The dyeing characteristics of lawsone–indigo mixtures on wool and their electrochemical properties were studied as a model for natural dyeing. To determine the optimum conditions for dyeing, experiments with different levels of pH in the oxidising and reducing states were performed. The dyeing characteristics on wool were studied using basic colour measurement. The colour depth of the dyeings was strongly dependent on the pH of the solution. Dyeing of lawsone in oxidising and reducing states at pH 4–6 showed the highest colour depth. For lawsone–indigo mixtures, the pH of the maximum colour strength shifted to pH 6–7. The dyeing properties of henna showed similar behaviour to the lawsone dyeing. The electrochemical properties of the lawsone–indigo mixtures were studied using cyclic voltammetry. The cathodic peak current increased with the increasing lawsone concentration. Furthermore, the cathodic peak current of the lawsone–indigo mixtures, which was less than the cathodic peak current of pure lawsone, indicates the sorption of lawsone molecules on the surface of dispersed indigo. Note de contenu : EXPERIMENTAL : Materials - Dyeing procedure - pH and redox potential measurements - Colour measurements - Cyclic voltammetry of lawsone-indigo mixtures RESULTS AND DISCUSSION : Dyeing experiments - Cyclic voltammetry experiments DOI : 10.1111/j.1478-4408.2011.00291.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00291.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12189 [article]

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Effect of the ozonation process on the dyeability of mohair fibres / Riza Atav in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 159-166 Titre : Effect of the ozonation process on the dyeability of mohair fibres Type de document : texte imprimé Auteurs : Riza Atav, Auteur ; Abbas Yurdakul, Auteur Année de publication : 2011 Article en page(s) : p. 159-166 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Laine Mohair Ozonation Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : This work has focused on the use of ozonation in order to improve the dyeability of mohair fibres. The study was carried out using a known concentration of ozone and involved process parameters such as wet pick-up, level of pH and treatment time. The effect of fibre ozonation was assessed in terms of colour, and test samples were also evaluated using scanning electron microscopy and Fourier transform–infrared spectroscopy. The optimum conditions of the ozonation process were determined as 60% wet pick-up, pH 7 and 30 min. According to the experimental results, it can be concluded that ozonated mohair fibres can be dyed both at 90 and 80 °C with all dye classes without causing any decrease in colour yield. Dyeing kinetics and thermodynamics were also studied and it was demonstrated that the rate constant and the standard affinity of the ozonated sample increased. Note de contenu : EXPERIMENTAL : Materials - Ozone treatment - Fibre dyeability - Alkali solubility - Fourier transform-infrared spectroscopy - Scanning electron microscopy - Fibre dyeability of optimised ozone-treated mohair using different classes of dyes - Kinetic and thermodynamic study. RESULTS AND DISCUSSION : Optimisation of the ozonation treatment - Effect of the ozonation treatment on fibre dyeability with various dye classes - Effect of the ozonation treatment on dyeing kinetics and thermodynamics. DOI : 10.1111/j.1478-4408.2011.00293.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00293.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12194 [article]

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The effects of coloured base fabric on electrochromic textile / Michael A. Invernale in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 167-172 Titre : The effects of coloured base fabric on electrochromic textile Type de document : texte imprimé Auteurs : Michael A. Invernale, Auteur ; Yujie Ding, Auteur ; Gregory A. Sotzing, Auteur Année de publication : 2011 Article en page(s) : p. 167-172 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispositifs électrochromiques Polymères électrochromes Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The colour of electrochromic fabric, and its colour transitions, was explored on the basis of variations in underlying fabric colour. A complete understanding of this phenomenon is essential for the fabric’s use in full-colour wearable displays or other applications. Previous work in this area utilised only white-coloured starting materials. Herein, a large colour swathe of fabrics was chosen. They were loaded with the commercially available conducting polymer, PEDOT-PSS, and were coated with an electrochromic polymer. These all-organic substrates were then switched between their two coloured states via reversible oxidation and reduction. At every stage, coordinates in the CIE Lu′v′ colour space were measured. It was found that darker colours decrease the overall contrast of the electrochromic, with black being entirely unobservable. More vibrant colours affected the observed colour through a subtractive mixing effect, as expected, but no adverse contrast effects between the two states of the electrochromic system was observed. DOI : 10.1111/j.1478-4408.2011.00294.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00294.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12195 [article]

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Saturated steam-assisted radio frequency fixation of reactive printed cotton fabrics / Arzu Yavas in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 179-185 Titre : Saturated steam-assisted radio frequency fixation of reactive printed cotton fabrics Type de document : texte imprimé Auteurs : Arzu Yavas, Auteur ; Arif T Özgüney, Auteur Année de publication : 2011 Article en page(s) : p. 179-185 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants 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). Fixateurs (chimie) Radiofréquences Textiles et tissus imprimés Vapeur d'eau Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this study was the development of a prototype machine for the processing of fabrics, which can be used as a reactor for the continuous finishing processes. The optimum applicator design for fabrics was developed in accordance with laboratory-scale experimental studies. Reactive printed samples were treated with the combination of radio frequency and steam in order to take advantage of the steam energy and to improve energy absorption. The colour yields of the samples fixated with the combination of radio frequency and steam energy were compared with conventional steaming (10 min) and thermofixation (5 min) processes. It was observed that steam-assisted radio frequency fixation ensured similar colour yields in a shorter setting time (3 min) compared with conventional methods. It was concluded that the new system could be an alternative method of setting, with the advantages of time savings and lower energy consumption. Note de contenu : EXPERIMENTAL : Materials and chemicals - Ultraviolet/ozone treatments - Surface characterisation - Mechanical properties - Cationic dyeing - The evaluation of dyeing RESULTS AND DISCUSSION : Reflectance and scanning electron microscopy analysis - Wettability of aramid fabric - Surface analysis and mechanical properties - Dyeability to cationic dyes DOI : 10.1111/j.1478-4408.2011.00296.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00296.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12196 [article]

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Preparation of pigmented ink-jet ink by a combination of surface treatments and synthetic dispersant / Chun Yoon in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 186-193 Titre : Preparation of pigmented ink-jet ink by a combination of surface treatments and synthetic dispersant Type de document : texte imprimé Auteurs : Chun Yoon, Auteur ; Jae-Hong Choi, Auteur Année de publication : 2011 Article en page(s) : p. 186-193 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Encre jet d'encre Noir de carbone Index. décimale : 667.3 Teinture et impression des tissus Résumé : Drop-on-demand ink-jet inks prepared from dyes usually show inadequate light and water fastness. Thus, in our previous paper, we studied black pigmented ink-jet inks with the aim of overcoming the drawbacks of dye-based ink by employing a variety of synthetic dispersants with gas black. In this study, pigmented ink-jet inks were prepared by a combination of the synthetic dispersant and the surface treatments of a furnace black that is more common than gas blacks. The results of this study show that the surface treatment of the furnace black and the use of the synthetic dispersant are useful in the preparation of ink-jet inks and endow them with properties that are comparable with those of commercial ink-jet inks. Note de contenu : EXPERIMENTAL : Equipment - Materials - Surface treatment of carbon black - Chemical synthesis of dispersant and preparation of dispersant solution - Preparation of pigment paste - Physical properties of pigment paste - Preparation of ink-jet ink formulation - Physical and printing properties of ink formulations RESULTS AND DISCUSSION : Surface treatment and synthetic dispersant - Preparation and physical properties of pigment pastes - Physical and printing properties of ink formulations DOI : 10.1111/j.1478-4408.2011.00297.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00297.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12197 [article]

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Properties of differently printed and easy-care finished linen fabrics / Petra Forte Tavčer in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 194-199 Titre : Properties of differently printed and easy-care finished linen fabrics Type de document : texte imprimé Auteurs : Petra Forte Tavčer, Auteur ; Suzanna Košir, Auteur ; Emilia Csiszar, Auteur Année de publication : 2011 Article en page(s) : p. 194-199 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants Colorants réactifs Couleurs -- Stabilité Formaldéhyde Textiles et tissus -- Propriétés mécaniques Textiles et tissus imprimés Index. décimale : 667.3 Teinture et impression des tissus Résumé : Linen fabrics were printed with reactive dyes, vat dyes and pigments. The prints were cured and after-treated using conventional processes. Printed and unprinted fabrics were finished with low-formaldehyde resin in a pad–dry–cure process. The mechanical properties (i.e. mass per unit area, flexural rigidity, tenacity at maximum load, wrinkle recovery angles and air permeability) with characteristics of printed and easy-care finished fabrics were measured and the mutual influence of printing and finishing on these properties was discussed. Moreover, the colour difference between the finished and unfinished printed samples was measured, and the colour fastness to washing, appearance of fabrics after domestic washing, colour fastness to rubbing and light was compared. Note de contenu : EXPERIMENTAL : Fabric - Printing and easy-care finishing technologies - Analysis RESULTS AND DISCUSSION : Mechanical properties - Colour values DOI : 10.1111/j.1478-4408.2011.00298.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00298.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12198 [article]

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Decolorisation of reactive dye wastewater and the effect of surfactants using laccase / Aiqin Hou in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 200-204 Titre : Decolorisation of reactive dye wastewater and the effect of surfactants using laccase Type de document : texte imprimé Auteurs : Aiqin Hou, Auteur ; Xufang Zhang, Auteur Année de publication : 2011 Article en page(s) : p. 200-204 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs -- Biodégradation Eaux usées -- Epuration Laccases Les laccases (EC 1.10.3.2) appartiennent à une famille d'enzymes ayant pour cofacteur du cuivre. C'est une oxydase (oxydoréductase, EC 1) que l'on retrouve dans de nombreuses plantes, champignons et micro-organismes. Le cuivre est lié sur plusieurs sites de la protéine. On distingue trois types. Les types 2 et 3 sont appelés grappe tri-nucléaire. Le cuivre du type 1 est soluble dans l'eau. Le mercure déplace le cobalt complexé dans les laccases. Les complexants du cuivre peuvent le déplacer et le remplacer par du cobalt. Les cyanures complexent également le cuivre, mais dans ce cas il n'est pas possible de réinsérer du cobalt. Les laccases oxydent les dérivés phénoliques mais d'une façon ménagée qui transforme la lignine en monolignol. Surfactants Index. décimale : 667.3 Teinture et impression des tissus Résumé : Laccase (benzenediol, oxidoreducase; Enzyme Commission Number) is a multi-copper oxidase from biomass. Laccase enzyme recycling on molecular oxygen as an electron acceptor can be applied for the decolorisation of synthetic dyes. The decolorisation of 49 commercial reactive dyes using laccase was investigated. The effects of diverse structure surfactants on decolorisation are discussed. The absorption spectra of reactive dyes after a laccase biodegradable reaction were analysed. Reactive dyes based on anthraquinone and azo structures could be decolorised using the enzyme and their chemical structures broken. Reactive dyes based on an anthraquinone structure were easier to decolorise than those based on an azo structure. Surfactants could affect the decolorisation of dyes with an enzyme. The effect of nonionic surfactant on the decolorisation of anthraquinone dyes was the reverse. The cationic surfactant could improve the decolorisation rate of diazo dye. The effect of the anionic surfactant on dye decolorisation was small. Most commercial reactive dyes could be decolorised and biodegraded using a laccase enzyme under mild conditions. Laccase enzyme biotechnology has potential applications in the decolorisation of reactive dye wastewater. Note de contenu : EXPERIMENTAL : Materials - Determination of enzyme reaction conditions for reactive dyes, Lanasol Blue 3R and Cibacron Navy W-B - Effect of surfactants on decolorisation using laccase - Measurements of UV-visible spectra RESULTS AND DISCUSSION : Determination of enzyme reaction conditions for decolorisation - Effect of surfactants on enzyme decolorisation - Decolorisation properties of difference structure commercial reactive dyes DOI : 10.1111/j.1478-4408.2011.00299.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00299.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12199 [article]

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The enhanced cationic dyeability of ultraviolet/ozone-treated meta-aramid fabrics / Yuanyuan Dong in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 173-178 Titre : The enhanced cationic dyeability of ultraviolet/ozone-treated meta-aramid fabrics Type de document : texte imprimé Auteurs : Yuanyuan Dong, Auteur ; Jinho Jang, Auteur Année de publication : 2011 Article en page(s) : p. 173-178 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants cationiques Fibre aramide Oxydation Ozone Photo-oxydation Rayonnement ultraviolet Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Aramid fabrics were photo-oxidised by ultraviolet/ozone irradiation. The surface properties of the modified fabrics were characterised by reflectance, attenuated total reflectance, electron spectroscopy for chemical analysis and surface zeta potential. The ultraviolet irradiation caused the oxygen content of the aramid fabric surface to increase, with the appearance of carbonyl and hydroxyl groups, and reduced the surface zeta potential, coupled with improved water wettability. Moreover, the crystalline structure did not change after ultraviolet/ozone treatment according to X-ray diffraction results. The modified aramid fabrics showed higher affinity to cationic dyes, which may have resulted from the newly introduced electrostatic interaction between cationic dyes and anionic dyeing sites on the photo-oxidised surface layers. Although colour fastness to both staining and rubbing were good to excellent, colour fastness to shade change was moderate. Furthermore, the ultraviolet/ozone pretreatment and cationic dyeing of aramid fabrics may overcome the loss in the mechanical properties associated with previously recommended dyeing methods for aramid fabrics. Note de contenu : EXPERIMENTAL : Materials and chemicals - Ultraviolet/ozone treatments - Surface characterisation - Mechanical properties - Cationic dyeing - The evaluation of dyeing RESULTS AND DISCUSSION : Reflectance and scanning electron microscopy analysis - Wettability of aramid fabric - Surface analysis and mechanical properties - Dyeability to cationic dyes DOI : 10.1111/j.1478-4408.2011.00295.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00295.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12200 [article]

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Isolation of colour components from flowers of Tabebuia argentea: kinetic and adsorption studies on silk yarn / Konaghatta Narayanachar Vinod in COLORATION TECHNOLOGY, Vol. 127, N° 3 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 127, N° 3 (2011) . - p. 205-209 Titre : Isolation of colour components from flowers of Tabebuia argentea: kinetic and adsorption studies on silk yarn Type de document : texte imprimé Auteurs : Konaghatta Narayanachar Vinod, Auteur ; Puttaswamy, Auteur ; Kurikempanadoddi Ningewoda Ninge Gowda, Auteur ; Rajagopal Sudhakar, Auteur Année de publication : 2011 Article en page(s) : p. 205-209 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Colorants végétaux Gallate d'épigallocatéchine Le gallate d'épigallocatéchine (EGCG) est l'ester d'épigallocatéchine et d'acide gallique. C'est le flavanol le plus abondant du thé, connu pour être un puissant antioxydant. On le trouve essentiellement dans le thé blanc, le thé vert et, dans une moindre mesure, le thé noir — lors de la production de ce dernier, les flavanols sont convertis essentiellement en théaflavines et en théarubigines2. On le trouve également dans de nombreux légumes, dans les fruits à coque ainsi que dans la poudre de caroubier à un taux de 1,09 mg·g-1. Soie et constituants Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The colour components from the flowers of Tabebuia argentea have been isolated and characterised as rutin and epigallocatechin gallate using spectral techniques. Adsorption kinetic and thermodynamic studies of these colour components on silk yarn have been investigated. It is noted that the adsorption is an endothermic process. The dyeing studies have been carried out at pH 4. The mordanting studies revealed that the post-mordanting technique could only increase the dye performance marginally. The fastness properties of the dyed silk were determined. The adsorption isotherm studies showed that the Langmuir model fitted the experimental data very well with a high regression coefficient. Note de contenu : EXPERIMENTAL : Materials - Methods - Adsorption isotherm studies RESULTS AND DISCUSSION : Characterisation of the colour components - Effect of concentration of dye on absorption and colour strength - Effect or mordanting - Effect of pH - Kinetic studies - Adsorption studies DOI : 10.1111/j.1478-4408.2011.00300.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00300.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12201 [article]

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