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An investigation of an instrument-based method for assessing colour fastness to light of photochromic textiles in COLORATION TECHNOLOGY, Vol. 131, N° 4 (08/2015)
[article]
Titre : An investigation of an instrument-based method for assessing colour fastness to light of photochromic textiles Type de document : texte imprimé Année de publication : 2015 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Laine
Photochromisme
Photostabilité
Polyesters
Solidité de la couleur
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A new method for evaluating the light fastness of photochromic fabrics was established, aimed at replacing the conventional method with an instrumental method. This method was based on comparing the colour difference of photochromic fabrics after light exposure with measured values of the colour differences of the blue wool references after fixed periods of light exposure. This method benefits from replacing the traditional visual evaluation of colour difference between exposed and unexposed areas of textile samples with a more accurate, instrument-based measurement of the colour difference. The light fastness is then evaluated by comparing the colour difference with tabulated values of colour differences brought about by light exposure, for increased periods of time, of standard blue wool references. This method could be used for measuring light fastness of both traditional and photochromic fabrics. However, blue wool references and tested samples should be exposed to light under similar conditions when using this method to measure colour fastness to light of fabrics. Note de contenu : - Principles of the instrument-based method of light fastness measurement
- Assessment of colour fastness to light of polyester fabric dyed with photochromic dyes 1 to 6 by the exhaust dyeing methodDOI : 10.1111/cote.12156 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12156 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24429
in COLORATION TECHNOLOGY > Vol. 131, N° 4 (08/2015)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17353 - Périodique Bibliothèque principale Documentaires Disponible La chimie ultra-rapide capturée en temps réel / Olivier Poizat in L'ACTUALITE CHIMIQUE, N° 348-349 (01-02/2011)
[article]
Titre : La chimie ultra-rapide capturée en temps réel Type de document : texte imprimé Auteurs : Olivier Poizat, Auteur ; Michel Sliwa, Auteur ; Cyril Ruckebusch, Auteur ; Stéphane Aloïse, Auteur ; Guy Buntinx, Auteur Année de publication : 2011 Article en page(s) : p. 21-24 Note générale : Bibliogr. Langues : Français (fre) Catégories : Photochromisme
Réactions de transfert de protons
Solvatation
Spectroscopie d'absorption atomique
Spectroscopie RamanIndex. décimale : 541.39 Réactions et synthèse chimiques Résumé : L'aptitude remarquable des spectrométries d'absorption transitoire et de diffusion Raman à haute résolution temporelle à renseigner sur les mécanismes de processus réactionnels photoinduits est illustrée par deux exemples. D'une part, l'étude de la protonation par H2O d'un anion radical ultra-basique généré par photoréduc ion démontre que la réaction est contrôlée par la dynamique de solvatation de l'ion OH- libéré lors du transfert de proton et informe sur la structure d'hydratation de cet ion. D'autre part, l'étude de la photocommutation de composés photochromes bistables révèle le caractère ultra-rapide du processus, condition essentielle pour des applications en optoélectronique. En ligne : https://new.societechimiquedefrance.fr/numero/la-chimie-ultra-rapide-capturee-en [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10748
in L'ACTUALITE CHIMIQUE > N° 348-349 (01-02/2011) . - p. 21-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012815 - Périodique Bibliothèque principale Documentaires Disponible Chromic textiles : Colour fastness properties and irreversible colour change behaviour of textiles screen printed with thermochromic, photochromic and hydrochromic colourants / Isabel Cabral in COLORATION TECHNOLOGY, Vol. 139, N° 2 (04/2023)
[article]
Titre : Chromic textiles : Colour fastness properties and irreversible colour change behaviour of textiles screen printed with thermochromic, photochromic and hydrochromic colourants Type de document : texte imprimé Auteurs : Isabel Cabral, Auteur ; Diana Santiago, Auteur ; Fernanda Steffens, Auteur Année de publication : 2023 Article en page(s) : p. 200-208 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Essais de résilience
Essais dynamiques
Frottements (mécanique)
Hydrochromie
Impression sur étoffes
Photochromisme
Pigments à effets spéciaux
Résistance au lavage
Sérigraphie
Solidité de la couleur
ThermochromieIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The objective of this work was to study how ultraviolet (UV) light exposure, washing and rubbing can influence colour and dynamic qualities of chromic textiles, and to explore how the results attained can be applied by designers for the development of colour changing palettes. The experimental work was conducted with 74% polyamide and 26% elastane elastics screen printed with thermochromic, photochromic and hydrochromic pigments in diverse colours. Initially, colourfastness properties of each pigment type versus colour were assessed. Although washing and rubbing can interfere in samples' colours by becoming lighter at different degrees, the results attained highlight the poor stability to lighting of thermochromic and photochromic pigments, which also present changes between hues along exposure time. For conventional textile applications, poor colour fastness commonly represents a limitation. This work proposes that the way textile colours and behaviour are permanently affected by the studied conditions can be interpreted as a creative variable in the design process. Research samples with a combination of pigments were developed and tested with a combination of cycles of different fastness tests, namely one washing cycle for every 4 h of UV light exposure, totalling 48 h and 12 washing cycles. Results demonstrate the possibility of creating interactive surfaces capable of displaying a wide range of colours that evolve to static within different hues, over stimuli conditions. Note de contenu : - Colour fastness properties of each pigment type versus colour
- Colour change behaviour of samples with pigment combination
- Table 1 : Thermochromic (TC) and hydrochromic (HC) samples results in wash fastness tests
- Table 2 : Thermochromic (TC) and hydrochromic (HC) samples results in dry and wet rub fastness tests
- Table 3 : CIELab colour differences (∆E*) of thermochromic (TC) and hydrochromic (HC) samples in light fastness testsDOI : https://doi.org/10.1111/cote.12660 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12660 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39532
in COLORATION TECHNOLOGY > Vol. 139, N° 2 (04/2023) . - p. 200-208[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24085 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Coatings go to work : An overview of today's functional coatings Type de document : texte imprimé Auteurs : Jamil Baghdachi, Auteur Année de publication : 2016 Article en page(s) : p. 24-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Hydrophobie
Photochromisme
Revêtement auto-nettoyant:Peinture auto-nettoyante
Revêtement autoréparant:Peinture autoréparante
Revêtements antigel
Revêtements autostratifiants:Peinture autostratifiante
Surfaces antimicrobiennes
Surfaces fonctionnellesIndex. décimale : 667.9 Revêtements et enduits Résumé : Coatings can have functionality beyond their protection and decoration of substrates. Functional coatings additionally offer a variety of smart behaviours and values-adding performance to a surface. This overview explains the underlying physical and/or chemical processes for a few key types. Note de contenu : - Science and technology of functional coatings
- Antimicrobial coatings
- Superhydrophobic, self-cleaning, easy-to-clean, and anti-icing
- Self-stratifying coatings
- Photochromic coatings
- Self-healing and self-repair coatings
- Thermochromic coatingsEn ligne : https://drive.google.com/file/d/1r4pXlUauyWa12Jrklnj5Iwa4zkJ60cwK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25206
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 1 (01/2016) . - p. 24-28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17730 - Périodique Bibliothèque principale Documentaires Disponible 17737 - Périodique Bibliothèque principale Documentaires Disponible Direct coloration of textiles with photochromic dyes. Part 3: dyeing of wool with photochromic acid dyes / Shah M. Reduwan Billah in COLORATION TECHNOLOGY, Vol. 128, N° 6 (2012)
[article]
Titre : Direct coloration of textiles with photochromic dyes. Part 3: dyeing of wool with photochromic acid dyes Type de document : texte imprimé Auteurs : Shah M. Reduwan Billah, Auteur ; Robert M. Christie, Auteur ; Renzo Shamey, Auteur Année de publication : 2012 Article en page(s) : p. 488-492 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Laine
Photochromisme
Pigments à effets spéciaux
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Wool dyed with two isomeric water-soluble spirooxazine-based photochromic acid dyes, which were specifically designed and synthesised for direct application to protein and polyamide substrates, showed reversible change from a pale yellowish colour to blue when exposed to sunlight or UV light. With the first dye, significantly higher photochromic colour change was obtained when the wool was bleached, a feature attributed to a more open fibre structure which may facilitate penetration of the non-planar dye anion and also the photocoloration reaction which requires a change in molecular geometry. Experimentation demonstrated that the optimum conditions for application of this dye to wool was from an aqueous dyebath at neutral pH and a temperature of 60 °C. An investigation using HPLC demonstrated that the dye was susceptible to decomposition in aqueous solution at higher temperatures and at lower pH values. The second dye was also applied to wool fabric to give a fabric with similar photochromic properties. The technical performance of the dyed fabrics, in terms of washfastness and photostability, was assessed. Note de contenu : - EXPERIMENTAL : Materials - Dyeing of wool fabric - Colour measurement - Study of the stability of dye 2 using high-performance liquid chromatography
- RESULTS AND DISCUSSION : Dyeing of wool with photochromic acid dyesDOI : 10.1111/j.1478-4408.2012.00406.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00406.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16455
in COLORATION TECHNOLOGY > Vol. 128, N° 6 (2012) . - p. 488-492[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14281 - Périodique Bibliothèque principale Documentaires Disponible Éclairage sur les matériaux ténébrescents : une exploration atomique à travers la chimie computationnelle / Pauline Colinet in L'ACTUALITE CHIMIQUE, N° 494 (04-05/2024)
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PermalinkTextile applications of photochromic dyes. Part 3 : factors affecting the technical performance of textiles screen-printed with commercial photochromic dyes as disperse dyes to polyester by exhaust dyeing / Anna F Little in COLORATION TECHNOLOGY, Vol. 127, N° 5 (2011)
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