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Does dyeing practice need dyeing theory ? / James Park in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 339-343 Titre : Does dyeing practice need dyeing theory ? Type de document : texte imprimé Auteurs : James Park, Auteur ; John Shore, Auteur Année de publication : 2008 Article en page(s) : p. 339-343 Note générale : Bibliogr. Langues : Anglais (eng) Résumé : It has been indicated that much of the practical data for dyeing processes available has never been exploited by the dye application industry, although dye research and development programmes have often identified targets with sucessful outcomes. Products and processes originated by dye makers have had a major impact on the success of practical dyeing, resulting in improved reproducibility and right-first-time processing. Dyeing theory research has consumed substantial resources invested by die makers and academic institutions, buty many of these studies have failed to yield useful data that could be applied directly in practical dyeing systems. The generation of detailed standard operating procesures has provided the conditions for achieving effective controle over the practical dyeing process, an objective that was once thought to be attainable eventually by the refinement of dyeing theories. DOI : 10.1111/j.1478-4408.2007.00109.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00109.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2248 [article]

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Environmentally friendly coloured materials : cellulose/titanium dioxide/inorganic pigment composite spherical microbeads prepared by viscose phase-separation method / Shoji Nagaoka in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 344-350 Titre : Environmentally friendly coloured materials : cellulose/titanium dioxide/inorganic pigment composite spherical microbeads prepared by viscose phase-separation method Type de document : texte imprimé Auteurs : Shoji Nagaoka, Auteur ; Masanori Nagata, Auteur ; Kenji Arinaga, Auteur ; Kiyoshi Shigemori, Auteur ; Makoto Takafuji, Auteur ; Hirotaka Ihara, Auteur Année de publication : 2008 Article en page(s) : p. 344-350 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : In order to develop environmentally friendly coloured materials, cellulose composite spherical microbeads hybridised with titanium dioxide (TiO2) particles and inorganic pigment were prepared by a phase-separation method using viscose and an aqueous solution containing sodium polyacrylate. Findings regarding the relationships between cellulose xanthate and the electronic characteristics of TiO2 particles used in the cellulose/inorganic material composite sphering process are also reported. These findings suggest that the location of TiO2 particles in cellulose microbeads is related to electrical repulsion between the xanthate (CSS-) group and TiO2. The use of TiO2 powder as colour pigment is limited, as its colour is white. The cellulose composite spherical microbeads covered with TiO2 and Fe2O3 particles were developed by addition of iron oxide (Fe2O3). Their surfaces were viewed by laser microscope and using SEM images. These composite microbeads retained the photocatalytic property of TiO2. Cellulose/TiO2/Fe2O3 composite spherical microbeads with both colour function and photocatalytic properties were successfully prepared. DOI : 10.1111/j.1478-4408.2007.00107.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00107.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6853 [article]

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Synthesis of an amino-terminated hyperbranched polymer and its application in reactive dyeing on cotton as a salt-free dyeing auxiliary / Feng Zhang in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 351-357 Titre : Synthesis of an amino-terminated hyperbranched polymer and its application in reactive dyeing on cotton as a salt-free dyeing auxiliary Type de document : texte imprimé Auteurs : Feng Zhang, Auteur ; Yuyue Chen, Auteur ; Hong Lin, Auteur ; Yanhua Lu, Auteur Année de publication : 2008 Article en page(s) : p. 351-357 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A water-soluble amino-terminated hyperbranched polymer was synthesised from methyl acrylate and diethylene triamine by melt polycondensation. Its molecular weight and possible structure were characterised by gel permeation chromatography, Fourier transform infrared spectrophotometry and nuclear magnetic resonance spectroscopy. The zeta potential of cotton fabrics treated with the aqueous solution of the amino-terminated hyperbranched polymer (6 g dm-3) in the presence of citric acid (2 g dm-3) and sodium hypophosphite (3 g dm-3) of the liquid phase is positive at pHs lower than 7.5. Dyed with reactive dyes, the treated cotton fabric displayed a markedly enhanced colour strength, even when dyeing had been carried out in the absence of the electrolyte. The washing fastness, rubbing fastness and levelling properties of the dyed, treated cotton fabrics were also good compared with that obtained by conventional dyeing. The dyeing behaviour of Reactive Brilliant Yellow A-4GLN on treated cotton fabric was examined and found to follow a Langmuir-type adsorption curve. It is concluded that the amino-terminated hyperbranched polymer can be used as a salt-free auxiliary in reactive dyeing on cotton. DOI : 10.1111/j.1478-4408.2007.00108.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00108.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6854 [article]

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X-Ray crystal structure analysis and determination of azo-enamine and hydrazone-imine tautomers of two hetarylazo indole dyes / Süheyla Özbey in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 358-364 Titre : X-Ray crystal structure analysis and determination of azo-enamine and hydrazone-imine tautomers of two hetarylazo indole dyes Type de document : texte imprimé Auteurs : Süheyla Özbey, Auteur ; Arzu Karayel, Auteur ; Gülten Kavak, Auteur ; Zeynel Seferoglu, Auteur ; Nermin Ertan, Auteur Année de publication : 2008 Article en page(s) : p. 358-364 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Two hetarylazo indole dyes were analyzed by single crystal X-ray diffraction. Dye 1, C18H14N4O, crystallises in the monoclinic system, space group P21/c, with two independent molecules in the asymmetric unit. Dye 2, C20H16N4, also crystallises in the monoclinic system, space group P21/n, Z = 4. In both compounds, there are two intramolecular C–H...N hydrogen bonds which influenced the molecular conformation between the azo group and the indole ring system and its phenyl substituent. Each of the independent molecules of dye 1 interact through the N–H...N hydrogen bond, whereas no classical intermolecular hydrogen bond was observed in dye 2. The molecules of dye 1 and dye 2 are packed differently in both structures. DOI : 10.1111/j.1478-4408.2007.00110.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00110.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6855 [article]

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Printing cotton fabrics with reactive dyes of high reactivity from an acidic printing paste / Yasser H. El Hamaky in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 365-373 Titre : Printing cotton fabrics with reactive dyes of high reactivity from an acidic printing paste Type de document : texte imprimé Auteurs : Yasser H. El Hamaky, Auteur ; Somaia Tawfeek, Auteur ; Dalia F. Ibrahim, Auteur ; Dalia Maamoun, Auteur ; Said Gaber, Auteur Année de publication : 2008 Article en page(s) : p. 365-373 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Pâtes d'impression Index. décimale : 667.3 Teinture et impression des tissus Résumé : The behaviour of reactive dyes of high reactivity during the printing process of 100% cotton fabrics from an alkaline and acidic printing paste was studied in detail. The printing pastes were stored for different periods of time and then the fabrics were printed. The samples were subjected to two methods of fixation, the first by steaming and the second by thermofixation. The effects of different factors such as alkali and acid concentration, storage time of the printing pastes and method of fixation on the K/S values of the prints were investigated. The fastness properties of the printed areas were also measured to determine the improvement obtained by acidic printing with high-reactivity reactive dyes on cotton fabrics. DOI : 10.1111/j.1478-4408.2007.00106.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00106.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6856 [article]

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Doped oxides of cerium as inorganic colorants / Cheruvathoor Poulose Aby in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) Titre : Doped oxides of cerium as inorganic colorants Type de document : texte imprimé Auteurs : Cheruvathoor Poulose Aby, Auteur ; Kalarical Janardhanan Sreeram, Auteur ; Balachandran Unni Nair, Auteur ; Thirumalachari Ramasami, Auteur Année de publication : 2008 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : The colour of inorganic colorants is based on metal ions such as cadmium, lead, chromium or cobalt, the majority of which are unfortunately potentially toxic. Thus, there is in a need to introduce alternative metal or metal oxides, which would be environmentally friendly and economically viable as a replacement for potentially toxic inorganic colorants. Rare earth-based colorants offer an additional opportunity for the development of optically pure colours. In this study, a replacement for potentially toxic colorants has been sought through the use of a rare earth metal ion, cerium. Appropriate doping of cerium oxides with molybdenum and iron gives an orange–red colorant. The conditions ideal for optimal colour have been standardised and the resultant colorant characterised through powder X-ray diffraction techniques, particle size measurement, etc. The colorants exhibit good hiding power and tinting strength. DOI : 10.1111/j.1478-4408.2007.00111.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00111.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6857 [article]

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Synthesis and spectroscopic properties of novel azo dyes derived from phthalimide / Jae-Hong Choi in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 379-386 Titre : Synthesis and spectroscopic properties of novel azo dyes derived from phthalimide Type de document : texte imprimé Auteurs : Jae-Hong Choi, Auteur ; Joon-Soo Park, Auteur ; Mi-Hyeon Kim, Auteur ; Hyun-young Lee, Auteur ; Andrew D. Towns, Auteur Année de publication : 2008 Article en page(s) : p. 379-386 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A set of azo dyes has been synthesised using N-substituted phthalimides as diazo components. 3,5-Dibromo-N-substituted-phthalimidylazo derivatives were cyanated by cyanodehalogenation to give dicyano analogues. All of the synthesised intermediates and dyes have been characterised by mass spectrometry, 1H-NMR or elemental analyses. The gamut of colour of the prepared dyes spanned much of the visible spectrum: absorption maxima of the dyes in formamide were observed in the range 436 to 609 nm. Consistent with results seen in previous studies of non-phthalimido monoazo disperse dyes, replacement of dibromo groups with dicyano functions in the phthalimide-based set led to large bathochromic shifts in absorption maxima, as did the introduction of acetylamino groups onto the coupler ring ortho to the azo link. However, switching an N-propyl function on the imido ring for a benzyl or 3-cyanopropyl substituent had little effect on absorption maxima. Good correlations between the observed absorption maxima of certain dyes and those of model analogues predicted by Pariser–Parr–Pople molecular orbital calculations were observed when steric effects were absent. DOI : 10.1111/j.1478-4408.2007.00112.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00112.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6858 [article]

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Dyeing behaviour of lyocell fabric : effect of fibrillation / Parikshit Goswami in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)  

[article]  inCOLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 387-393 Titre : Dyeing behaviour of lyocell fabric : effect of fibrillation Type de document : texte imprimé Auteurs : Parikshit Goswami, Auteur ; Richard S. Blackburn, Auteur ; Jim Taylor, Auteur ; Stephen Westland, Auteur ; Patrick White, Auteur Année de publication : 2008 Article en page(s) : p. 387-393 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : To understand the effect of fibrillation in dyeing, non-fibrillated lyocell fabrics and fibrillated lyocell fabrics were dyed with different types of reactive dyes. Their exhaustion, fixation and K/S values were measured and compared. It was observed that fibrillated lyocell shows lower visual colour yield than non-fibrillated lyocell, independent of the exhaustion and fixation. It was also observed that some bifunctional reactive dyes, because of the location of reactive groups and flexibility of their structure, reduced fibrillation of lyocell through crosslinking. It was shown that defibrillating fibrillated lyocell with a cellulase enzyme increased the visual colour yield. Non-fibrillated lyocell fabrics after dyeing were subjected to a hydroentanglement treatment to create a fibrillation effect. These properties suggest that the lower visual colour yield of fibrillated lyocell is not mainly attributed to any change in fibre properties of the fibrils, but as a result of the light scattering from the fibrillated fabric surface. DOI : 10.1111/j.1478-4408.2007.00113.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00113.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6859 [article]

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