Design and application of a multifunctional reactive dye capable of high fixation efficiency on cellulose / K. F. Morris in COLORATION TECHNOLOGY, Vol. 124, N° 3 (2008)  

[article]  inCOLORATION TECHNOLOGY > Vol. 124, N° 3 (2008) . - p. 186-194 Titre : Design and application of a multifunctional reactive dye capable of high fixation efficiency on cellulose Type de document : texte imprimé Auteurs : K. F. Morris, Auteur ; David M. Lewis, Auteur ; Peter J. Broadbent, Auteur Année de publication : 2009 Article en page(s) : p. 186-194 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A polyfunctional reactive dye containing two dichloro-s-triazine residues linked through aliphatic amino groups via a third triazine system to the chromophoric residue has been prepared. The dye was synthesised stepwise from a specially synthesised 2,4-dichloro-s-triazine dyes. The first step is the reaction of both carbon–chlorine sites in the 'parent' dye with 2 mol ethylenediamine under selected conditions of pH and temperature; these conditions ensure that only one of the amino groups in the ethylenediamine will react to give the bis-2,4-aminoethyleneaminotriazine dye. The second step is the condensation of 2 mol cyanuric chloride with the two pendant primary amino groups. The alkylamino-linked dichloro-s-triazine dyes show very different dyeing properties when compared with those shown by the parent dichloro-s-triazine dye, which has the reactive group linked directly into the aromatic chromophore; in particular, the new dyes have high fixation efficiencies when dyed on cotton at 50 °C and the dye–fibre bond stability to boiling acidic conditions is very good. DOI : 10.1111/j.1478-4408.2008.00140.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2008.00140.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3161 [article]

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Development of a novel three-dimensional printing technology for the application of "raised" surface features / David M. Lewis in COLORATION TECHNOLOGY, Vol. 137, N° 5 (10/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 5 (10/2021) . - p. 468-474 Titre : Development of a novel three-dimensional printing technology for the application of "raised" surface features Type de document : texte imprimé Auteurs : David M. Lewis, Auteur ; Peter J. Broadbent, Auteur ; Muriel Rigout, Auteur ; Chris M. Carr, Auteur ; Fearne Johnson, Auteur Année de publication : 2021 Article en page(s) : p. 468-474 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Encre d'imprimerie Impression jet d'encre Impression tridimensionnelle Index. décimale : 667.4 Encres Résumé : A simple procedure to ink-jet print raised images using two water-soluble inorganic inks is reported and it has the potential to be utilised in domestic and commercial environments. The advantages of such a procedure lies in the ability to print moulded objects, Braille type and to engineer special gonio-specific effects that may have value in the security printing area. The study focuses on printing gypsum through the ready precipitation of calcium sulphate dihydrate by co-jetting calcium chloride and ammonium sulphate solutions. The results in this preliminary study are encouraging and offer a potential method for durable surface structuring of material surfaces with haptic and visual effects for both the blind and the sighted. Note de contenu : - Concurrent cartridge printing - Sequential cartridge printing - Braille printing - Smart printing DOI : https://doi.org/10.1111/cote.12541 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12541 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36490 [article]

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Digital alkali resist prints on polyester / David M. Lewis in COLORATION TECHNOLOGY, Vol. 133, N° 6 (12/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 6 (12/2017) . - p. 463-468 Titre : Digital alkali resist prints on polyester Type de document : texte imprimé Auteurs : David M. Lewis, Auteur ; Peter J. Broadbent, Auteur Année de publication : 2017 Article en page(s) : p. 463-468 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants dispersés Catégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester. Impression sur étoffes Polyesters Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : In earlier papers we have described sulphite-based and secondary amine-based resist printing of cotton using ink-jet procedures. This paper describes the chemical resist printing of polyester fabrics padded with disperse dyes to create a white image on a coloured background. Polyester grounds have been prepared by the pad-dry ‘dyeing’ of polyester fabrics with alkali-clearable disperse dyes, such as a Dianix PC (DyStar) or a Dianix SF (DyStar) dye, and subsequently ink-jet printed with sodium carbonate based ink formulations to yield a white image on a solid ground following high temperature steaming and appropriate wash-off procedures. Coloured images have been achieved by a two-step process whereby the coloured ground fabric was initially printed with an alkali-based ink and then overprinted in a second step with an illuminating ink formulation containing an alkali stable disperse dye, such as a Dianix AD (DyStar) or Serilene ADS (Yorkshire Chemicals). Note de contenu : - EXPERIMENTAL : Materials - Methods - Preparation of coloured ground fabrics - RESULTS AND DISCUSSION : Ink preparation - White resist/discharge ink formulation - Monochrome photographic images on sepia grounds - Illuminated resist/discharge formulations - Illuminating inks for two-step printing processes - Line quality analysis DOI : 10.1111/cote.12305 En ligne : https://drive.google.com/file/d/1xo0xK3q_kQLzqzXnR9ayMxVEvzOUml3s/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29492 [article]

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Investigation into the development of novel lanthanide-based luminescent colorants for application to textiles and paper materials / David M. Lewis in COLORATION TECHNOLOGY, Vol. 139, N° 5 (10/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 5 (10/2023) . - p. 610-620 Titre : Investigation into the development of novel lanthanide-based luminescent colorants for application to textiles and paper materials Type de document : texte imprimé Auteurs : David M. Lewis, Auteur ; Peter J. Broadbent, Auteur ; M. L. A. Rigout, Auteur ; C. M. Carr, Auteur ; C. C. Seaton, Auteur ; T. Swift, Auteur Année de publication : 2023 Article en page(s) : p. 610-620 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bleu (couleur) Colorants -- Synthèse Impression jet d'encre Impression sur étoffes Impression sur papier Luminescence Luminophores Métaux des terres rares Rouge (couleur) Structure chimique Vert Index. décimale : 667.3 Teinture et impression des tissus Résumé : This article describes the synthesis and application of lanthanide-based luminophores for visualisation under short wavelength ultraviolet (UV) activation (typically 254 nm). Luminophores are chemical compounds which re-emit light of longer wavelength than typical fluorescence and phosphorescence, following photoexcitation, because of efficient energy transfer from the ligands to the lanthanide ion emission levels. The luminophores described in this article are all derived from europium and terbium metal complexes and cover the complete colour gamut. Selection of appropriate ligands allows for water solubility or water insolubility (if required pigment or disperse “dye” applications). Similar to dyeing or printing processes, the anionic complexes can be applied to polyamide fibres or to cellulosic fibres, whereas dispersions of the non-ionic complexes are suitable for polyester or cellulose acetate fibre application. The water-soluble derivatives are also suitable for ink-jet printing and the water-insoluble derivatives are suitable for lithographic or intaglio paper printing. The novel complexes are excited by radiation below 300 nm and thus cannot be activated by sunlight (the earth's atmosphere prevents light below about 300 nm reaching the surface). Accordingly, the photo-stability of the dyed materials and prints obtained is excellent. These materials could be used in security marking applications, for example bank-notes and passports, where they could replace the current fluorophores that are rendered visible under near UV light (typically 365 nm) illumination but exhibit relatively poor photo-stability. The development of an RGB (red, green and blue) colour palette for inkjet printing based on these innovative luminophores will significantly support the design of digitally printed security features. Note de contenu : - EXPERIMENTAL : Materials - Long-liquor application methods - Ink-jet printing with water-soluble luminophores - K-Bar imaging and offset printing - Luminescence viewing - Light-fastness assessment - Chemical structure analysis - RESULTS AND DISCUSSION : Preparation of red water-soluble europium complex luminophores - Preparation of water-soluble green terbium(III) complex luminophores - Preparation of blue water-soluble europium(III) complex luminophores - Synthesis of water insoluble red luminophore pigment - Synthesis of water insoluble green luminophore pigment - Synthesis of water insoluble blue luminophore pigment - Structures of luminophores - Application of luminophores to textile substrates - Paper printing DOI : https://doi.org/10.1111/cote.12675 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12675 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39839 [article]

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Investigation into the dyeing of wool with Lanasol and Remazol reactive dyes in seawater / Peter J. Broadbent in COLORATION TECHNOLOGY, Vol. 134, N° 2 (04/2018)  

[article]  inCOLORATION TECHNOLOGY > Vol. 134, N° 2 (04/2018) . - p. 156-161 Titre : Investigation into the dyeing of wool with Lanasol and Remazol reactive dyes in seawater Type de document : texte imprimé Auteurs : Peter J. Broadbent, Auteur ; Chris M. Carr, Auteur ; Muriel Rigout, Auteur ; Naraindra Kistamah, Auteur ; Jennita Choolun, Auteur ; C. Lakshmi Radhakeesoon, Auteur ; M. Abbas Uddin, Auteur Année de publication : 2018 Article en page(s) : p. 156-161 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs Couleur -- Analyse Eau de mer Filtration Laine Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Freshwater is an increasingly scarce resource that is extensively used in textile wet‐processing. In seeking to identify alternative low freshwater‐usage coloration technology, this study examined the potential use of seawater (SEAW) as the dyeing medium for wool coloration using a range of reactive dyes. Initially, the dyeing behaviour of the wool fabric in simulated seawater (SSW) was compared with conventional dyeing from distilled water (DW) using α‐bromoacrylamide‐based Lanasol dyes and sulphatoethyl sulphone‐based Remazol dyes. These preliminary studies demonstrated that comparable coloration could be achieved in the SSW medium based on an assessment of the dye exhaustion, dye fixation, colour yield and levelness. Subsequent dyeing studies of wool using Mauritian seawater with both the Lanasol and Remazol reactive dyes confirmed that, based on the dye exhaustion, dye fixation, colour yield and levelness, comparable coloration could be achieved, highlighting the possibility of substituting freshwater with seawater as the dyeing medium. Note de contenu : - Materials - Simulated seawater composition - Wool dyeing - Colour analysis - Seawater filtration DOI : 10.1111/cote.12329 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12329 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30321 [article]

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Investigation into the effect of a plant-derived stabiliser on the light and wash fastness of sulphur-dyed cotton and nylon fabrics / Peter J. Broadbent in COLORATION TECHNOLOGY, Vol. 136, N° 3 (06/2020)  

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Investigation into the reaction of reactive dyes with carboxylate salts and the application of carboxylate-modified reactive dyes to cotton / David M. Lewis in COLORATION TECHNOLOGY, Vol. 138, N° 1 (02/2022)  

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A novel resist technique based on secondary amines for the printing of cotton with reactive dyes / David M. Lewis in COLORATION TECHNOLOGY, Vol. 130, N° 6 (12/2014)  

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Sulphite-based resist styles for digital printing cotton fabrics / David M. Lewis in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)

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Supercritical carbon dioxide (SC-CO2) dyeing of cellulose acetate : An opportunity for a "greener" circular textile economy / Peter J. Broadbent in COLORATION TECHNOLOGY, Vol. 139, N° 4 (08/2023)  

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Use of a novel water-soluble arylating agent to dye wool and wool blends with disperse dyes / Peter J. Broadbent in COLORATION TECHNOLOGY, Vol. 123, N° 1 (2007)  

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