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COLORATION TECHNOLOGY / Society of dyers and colourists . Vol. 132, N° 2Mention de date : 04/2016Paru le : 26/03/2016 |
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Ajouter le résultat dans votre panierMetal mordanting in dyeing with natural colourants / Avinash P. Manian in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Metal mordanting in dyeing with natural colourants Type de document : texte imprimé Auteurs : Avinash P. Manian, Auteur ; Paul Roshan, Auteur ; Thomas Bechtold, Auteur Année de publication : 2016 Article en page(s) : p. 107-113 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants végétaux
Mordançage (teinture)
Photostabilité
Sels métalliques
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Metal mordanting, or the application of metal salts, is a common method of improving the light fastness in dyeing with natural colourants. This review presents the results from a survey of the literature on metal mordanting to assess what levels of correlation exist between mordant-induced effects (changes in colour and colour depth) and the changes in light fastness, what is known about the mechanisms of mordant-induced improvements of light fastness, and how the salt levels used in coloration processes compare with the limits on metal levels in wastewater and on the dyed substrates. No strong interrelationships are found between the mordant-induced effects and light fastness improvements. Knowledge about mechanisms of mordant effect on light fastness appears, in large part, to be derived from empirical correlations. However, as light fastness is affected by a multitude of factors, the correlations do not always hold true. It is found that residual metal contents in spent dye/mordanting liquors are generally not reported. However, with rough calculations, it is estimated that, with even the lowest reported salt concentrations, the metal contents in spent liquors exceed environmental release limits. The metal contents on dyed substrates are also not generally reported, but similar estimations show that the contents of heavy metal on dyed substrates (when copper and chromium salts are used as mordants) also exceed limits. On the basis of these observations, the authors make suggestions for elements to be included in investigations on furthering the use of natural colourants in textile dyeing. Note de contenu : - Colour depth changes and light fastness improvements
- Colour changes and light fastness improvements
- Photochemical quenching mechanisms
- Mordant levels used in dyeingDOI : 10.1111/cote.12199 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12199 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25853
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Effect of reactive dyeing on the UV protection affected by knitted fabric made from different types of cotton fibre / C. W. Kan in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Effect of reactive dyeing on the UV protection affected by knitted fabric made from different types of cotton fibre Type de document : texte imprimé Auteurs : C. W. Kan, Auteur ; C. H. Au, Auteur Année de publication : 2016 Article en page(s) : p. 114-120 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs
CotonLe 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).
Fibres végétales
Peignage (fibres textiles)Le peignage consiste à paralléliser les fibres et à ne conserver que les plus longues, tout en retirant l'air contenu entre les fibres. Le fil obtenu est lisse et brillant, solide mais moins doux.
Protection contre le rayonnement ultraviolet
Teinture -- Fibres textiles
TricotIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, 100% cotton knitted fabrics made from combed cotton and combed pima cotton were dyed with reactive dye, with different dye concentrations. Colour properties such as CIE L*a*b* values as well as dyeing uniformity of the dyed fabrics were measured. The relationships between colour properties and the ultraviolet protection afforded by cotton knitted fabrics were investigated. Experimental results revealed that dye concentration is the most important factor. In addition, only L* values have a direct mathematical relationship with the ultraviolet protection factor; a* and b* values and dyeing uniformity were not found to have a significant correlation with ultraviolet protection factor values. Meanwhile, knitted fabric made from combed cotton fibre has better ultraviolet protection performance than fabric made from combed pima cotton fibre. Note de contenu : - EXPERIMENTAL : Materials - Combined scouring and bleaching of cotton knitted fabric - Reactive dye dyeing - Ultraviolet protection factor measurement - CIE L*a*b* measurement
- RESULTS AND DISCUSSION : Relationship between dye concentration and ultraviolet protection factor - Relationship between fibre type and ultraviolet protection factor - Relationship between colour values and ultraviolet protection factor - Relationship between dyeing levelness and ultraviolet protection factorDOI : 10.1111/cote.12201 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12201 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25854
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Synthesis, spectroscopic characterisation, and potential application of dyes containing a carbostyril skeleton as sensors for thiols / Aleksandra Grzelakowska in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Synthesis, spectroscopic characterisation, and potential application of dyes containing a carbostyril skeleton as sensors for thiols Type de document : texte imprimé Auteurs : Aleksandra Grzelakowska, Auteur ; Jolanta Kolinska, Auteur ; Jolanta Sokolowska, Auteur Année de publication : 2016 Article en page(s) : p. 121-129 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Capteurs chimiques
Caractérisation
Colorants -- Synthèse
Photochimie
ThiolsIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Several dyes based on a carbostyril skeleton were synthesised and characterised using proton nuclear magnetic resonance spectroscopy and electron ionisation mass spectrometry. Their basic spectroscopic properties, such as absorption and emission spectra, were also measured. The behaviour of the obtained dyes in the absence and presence of thiol amino acids and other compounds under various conditions were studied. These dyes contain various moieties in the structure, acting as Michael acceptors. Results show that the studied compounds have the potential to act as colorimetric sensors for thiols, but the benzothioazolium dyes are less effective than dicyanoethylene derivatives. Note de contenu : - EXPERIMENTAL : General - Synthesis - Photochemical experiments - Studies of the spectroscopic response to sulfhydryl and non-sulfhydryl amino acids and other thiol compounds
- RESULTS AND DISCUSSION : Synthesis and spectroscopic characterisation of the dyes - Spectroscopic response of the studied dyes of thiolsDOI : 10.1111/cote.12187 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12187 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25855
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Statistical investigation of the cotton dyeing kinetics of CI Reactive Black 5 dye / Agah Oktay Özdemir in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Statistical investigation of the cotton dyeing kinetics of CI Reactive Black 5 dye Type de document : texte imprimé Auteurs : Agah Oktay Özdemir, Auteur ; Bülent Çaglar, Auteur ; Mustafa Tutak, Auteur ; Oguz Demiryürek, Auteur Année de publication : 2016 Article en page(s) : p. 130-134 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs
CotonLe 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).
Statistique
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, the dyeing kinetics of CI Reactive Black 5 dye was statistically investigated. Cotton fabrics were dyed with this dye under different conditions by the exhaustion technique. Dye samples were taken from the dyebath from the start to the end of the process at 10 min intervals in order to determine the percentage dye exhaustion. The transmittance of the coloured dyebath samples was measured using a UV-vis spectrophotometer. The results were investigated by statistical methods using analysis of variance and regression curves. The dye exhaustion of the cotton fabrics was found to change as a function of the dyeing parameters. Times of half-dyeing were determined from the regression curves. Note de contenu : - Fabric and dye
- Dyeing and kinetic study
- Measurements of dye exhaustion
- Time of half-dyeing
- Statistical analysisDOI : 10.1111/cote.12196 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12196 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25863
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Green fire retardant finishing and combined dyeing of proteinous wool fabric / Santanu Basak in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Green fire retardant finishing and combined dyeing of proteinous wool fabric Type de document : texte imprimé Auteurs : Santanu Basak, Auteur ; Kartick K. Samanta, Auteur ; Sajal K. Chattopadhyay, Auteur ; Pintu Pandit, Auteur ; Saptarshi Maiti, Auteur Année de publication : 2016 Article en page(s) : p. 135-143 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bananier et constituants
Déchets agricoles -- Recyclage
Essais dynamiques
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Laine
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Flame retardancy was imparted to a scoured and bleached, proteinous woollen textile by using banana pseudostem sap, an ecofriendly waste agricultural product, at different pH levels. The flame retardancy characteristics of both the control and the treated fabrics were analysed in terms of the limiting oxygen index and the vertical flammability measurement. Thermal degradation and fire retardancy mechanisms were studied using thermogravimetry, scanning electron microscopy, and energy dispersive X-ray analysis. Moreover, the charring mechanism of both the control and the banana-pseudostem-sap-treated fabrics with varying pH was analysed and reported in detail. The wool fabric was also dyed with CI Acid Blue 25 using banana pseudostem sap as well as water as the medium. The fabric dyed with the banana pseudostem sap medium at pH 5.5 showed more colour exhaustion, colour strength, and thermal stability compared with the control wool fabric. The mechanism by which superior fire retardancy and colour strength are imparted to the woollen textile by the application of banana pseudostem sap is proposed. Note de contenu : - MATERIALS AND METHODS : Material and BPS application - Determination of percentage add-on - Thermal characterisation - Dyeing of wool fabric - Colour parameters - Thermogravimetry and differential thermal analysis under nitrogen and in an air atmosphere - Scanning electron microscopy and energy dispersive X-ray analysis - Wash durability test - Mechanical strength
- RESULTS AND DISCUSSION : Flame retardancy analysis - Thermogravimetry and differential thermal analysis - Scanning electron microscopy and energy dispersive X-ray analysis - Char characteristics - Wash durability to finish - Mechanical properties - Coloration of the wool fabric - Mechanism of the fire retardant finish and dyeingDOI : 10.1111/cote.12200 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12200 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25864
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible A comparative study of the dependency of colour measurement on surface temperature / Jiangning Che in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : A comparative study of the dependency of colour measurement on surface temperature Type de document : texte imprimé Auteurs : Jiangning Che, Auteur ; Rong Li, Auteur ; Muditha Senanayake, Auteur Année de publication : 2016 Article en page(s) : p. 144-152 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie
Etudes comparatives
Matériaux céramiques
Spectrophotométrie
Teinture -- Fibres textiles
Température
ThermochromieIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this paper, we evaluated in depth how the spectrophotometric colour measurement of an object will respond to surface temperature change. The colorimetric variations of eight coloured ceramic tiles against temperature changes were studied. Colorimetric data measured at specific temperature were compared with data measured at about 20 °C. For each coloured ceramic tile, reflectance curves and colorimetric differences resulting from temperature differences were examined to demonstrate the exact dependency of colorimetric properties across the temperature range studied. Experimental data showed that peaks and slopes on a reflectance curve are the major impact resulting from temperature variation. Colours with lower lightness and lower chroma showed smaller colorimetric changes with change in temperature, while colour with higher lightness and chroma exhibited a distinct thermochromism and linearity changes across the temperature range. A conspicuous correlation potential between surface temperature and CIE colorimetric coordinates was observed. Note de contenu : - The colorimetric data of coloured ceramic tiles
- The reflectance curves of the colours against temperature change
- The effect of temperature variation on colour difference changes against the 20°C measurement
- The effect of temperature changes in CIE L*, a*, b* C*, and H* against the 20°C measurementDOI : 10.1111/cote.12202 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12202 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25865
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Looking into special surface effects : diffuse coarseness and glint impression / Zihao Winston Wang in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Looking into special surface effects : diffuse coarseness and glint impression Type de document : texte imprimé Auteurs : Zihao Winston Wang, Auteur ; Ming Ronnier Luo, Auteur Année de publication : 2016 Article en page(s) : p. 153-161 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Granulosité Réflectance 'Techniques psychophysiques' Surface 'Effets spéciaux' 'Perception visuelle' 'Eclairage diffus' unidirectionnel' 'Analyse dimensionnelle Glint' Reflet Index. décimale : 667.3 Teinture et impression des tissus Résumé : Diffuse coarseness (graininess) and glint impression (sparkle) are two aspects of visual perception for special-effect materials, including car finishes, etc. Previous work has shown that these two attributes become apparent when illuminated under two distinct illumination conditions: diffuse and unidirectional illumination respectively. The effect of glint impression has significant dependency on the viewing geometry. In this work, three psychophysical experiments were carried out, including diffuse coarseness assessment, glint impression assessment, and finding dimensions of glint space. In the experiments, one geometry for diffuse coarseness and three geometries for glint impression were designed. The three viewing geometries were designed according to a commercial device, BYK-mac, so that the results were used to test the reliability of instrumental measurements. Based on the conclusions drawn from the psychophysical experiments, a further investigation on glint space was conducted using the multidimensional scaling technique. From the visual results, two dimensions, corresponding to two attributes, were extracted and were validated by the instrumental results. Bidirectional reflectance distribution function data were also adopted from another commercial device, Imaging Sphere from Radiant Vision Systems Inc., USA (originally RadiantZemax Inc.), to predict glint impression. Some promising results were obtained. Note de contenu : - EXPERIMENTAL : Samples - Observers - Viewing conditions - Psychophysical techniques
- RESULTS AND DISCUSSION : Repeatability and reproductibility - Testing the instrument performance - Glint dimensionality analysisDOI : 10.1111/cote.12203 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12203 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25866
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Extraction of polyphenolic dyes from henna, pomegranate rind, and Pterocarya fraxinifolia for nylon 6 dyeing / Izadyar Ebrahimi in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Extraction of polyphenolic dyes from henna, pomegranate rind, and Pterocarya fraxinifolia for nylon 6 dyeing Type de document : texte imprimé Auteurs : Izadyar Ebrahimi, Auteur ; Mazeyar Parvinzadeh Gashti, Auteur Année de publication : 2016 Article en page(s) : p. 162-176 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chlorure d'étain
Colorants végétaux
Colorimétrie
Coût-Efficacité
Extraction (chimie)
Mordançage (teinture)
Polyamide 66
PolyphénolsLes polyphénols constituent une famille de molécules organiques largement présente dans le règne végétal. Ils sont caractérisés, comme l’indique le nom, par la présence d'au moins deux groupes phénoliques associés en structures plus ou moins complexes, généralement de haut poids moléculaire. Ces composés sont les produits du métabolisme secondaire des plantes.
Les polyphénols prennent une importance croissante, notamment grâce à leurs effets bénéfiques sur la santé. En effet, leur rôle d’antioxydants naturels suscite de plus en plus d'intérêt pour la prévention et le traitement du cancer, des maladies inflammatoires, cardiovasculaires et neurodégénératives. Ils sont également utilisés comme additifs pour les industries agroalimentaire, pharmaceutique et cosmétique
"Ils ont tous en commun la présence d'un ou plusieurs cycles benzéniques portant une ou plusieurs fonctions hydroxyles". La désignation "polyphénols" est consacrée par l'usage et, alors qu'elle ne devrait concerner que les molécules portant plusieurs fonctions hydroxyle phénolique, elle est habituellement utilisée pour l'ensemble de ces composés.
Les polyphénols naturels regroupent donc un vaste ensemble de substances chimiques comprenant au moins un noyau aromatique, portant un ou plusieurs groupes hydroxyle, en plus d’autres constituants. Il y a quatre principales familles de composés phénoliques : les acides phénoliques (catéchol, acide gallique, acide protocatéchique), les flavones, l'acide chlorogénique et les quinones. Ils peuvent aller de molécules simples, comme les acides phénoliques, à des composés hautement polymérisés, de plus de trente mille daltons, comme les tanins (acide tannique).
Les polyphénols sont communément subdivisés en phénols simples, acides phénoliques et coumarines, en naphtoquinones, en stilbénoïdes (deux cycles en C6 liés par deux atomes de carbone), en flavonoïdes, isoflavonoïdes et anthocyanes, et en formes polymérisées : lignanes, lignines, tanins condensés. Ces squelettes carbonés de base sont issus du métabolisme secondaire des plantes, élaborés par la voie du shikimate.
Les polyphénols sont présents dans diverses substances naturelles : sous forme d'anthocyanine dans les fruits rouges, le vin rouge (en relation avec les tanins, phénomène du "paradoxe français"), sous forme de proanthocyanidines dans le chocolat et le vin, d'acides caféoylquinique et féruloylquinique dans le café, de flavonoïdes dans les agrumes, et sous forme de catéchines comme le gallate d'épigallocatéchine dans le thé vert, de quercétine dans les pommes, les oignons, le vin rouge, etc.
D'après une étude réalisée avec des volontaires via Internet, les sources alimentaires de polyphénols sont principalement le café (36,9 %), le thé — vert ou noir — (33,6 %), le chocolat pour son cacao (10,4 %), le vin rouge (7,2 %) et les fruits (6,7 %)18. Parmi les fruits, les polyphénols, très présents dans toutes les pommes, sont encore plus concentrés dans les pommes à cidre (riches en tanin), qui peuvent en contenir jusqu'à quatre fois plus : c'est une biodiversité qui se manifeste en richesse aussi bien qualitativement que quantitativement en polyphénols. (Wikipedia)
Solidité de la couleur
Sulfate d'aluminium
Tanins
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Acid and disperse dyes are two well-known synthetic materials that are primarily used for dyeing of nylon 6 fibres. Despite their good performance, several negative impacts on the environment, including air and water pollution, are major concerns to researchers. An alternative ecofriendly approach to the dyeing of nylon 6 is the use of natural dyes, given their abundant natural sources, biocompatibility, biodegradability, non-toxicity, non-allergic responses, and non-carcinogenic effects on human life. Based on these advantages, we extracted polyphenolic dyes from henna leaves, pomegranate rind, and Pterocarya fraxinifolia leaves and studied the dyeability on nylon 6 fabric using three compounds of aluminium sulfate, tannic acid, and tin chloride as toxic and non-toxic mordants before dyeing. Fourier transform infrared spectra of the nylon 6 fabric confirmed the coordination complexes and ?–? bonding between the mordants and the dyes. Colorimetric and fastness results showed that the mordants increased the colour strength and improved the fastness properties of the fibres. Our results suggest that tin chloride and aluminium sulfate as metal mordants can be successfully replaced with tannic acid as a biomordant in the natural dyeing of nylon 6. Also, cost assay showed that dyeing of nylon 6 with extracted natural dyes from waste leaves could be a sustainable and economical substitute for synthetic dyeing. Note de contenu : - Evaluation of ultraviolet absorption
- Evaluation of extracted compounds and dyed samples using Fourier transform infrared spectroscopy
- Effect of mordants on colorimetric changes
- Colour fastness properties
- Cost assay for natural dyeing of nylon 6DOI : 10.1111/cote.12204 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12204 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25867
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Identification of early synthetic dyes in historical Chinese textiles of the late nineteenth century by high-performance liquid chromatography coupled with diode array detection and mass spectrometry / Jian Liu in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Identification of early synthetic dyes in historical Chinese textiles of the late nineteenth century by high-performance liquid chromatography coupled with diode array detection and mass spectrometry Type de document : texte imprimé Auteurs : Jian Liu, Auteur ; Yang Zhou, Auteur ; Feng Zhao, Auteur ; Zhiqin Peng, Auteur ; Shujuan Wang, Auteur Année de publication : 2016 Article en page(s) : p. 177-185 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie textile
Chimie textile -- Histoire
Chromatographie en phase liquide à hautes performances
Colorants -- Identification
Extraction (chimie)
Fibres textiles -- Analyse
Spectrométrie de masse
Teinture -- Fibres textiles
Textiles et tissus -- Chine -- 19e siècleIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In the present study, five classes of synthetic dyes – nitrophenol (picric acid), azo (Orange II), diarylmethane (auramine O), triarylmethine (fuchsine, methyl violet, and malachite green), and anthraquinone (alizarin) dyes – were identified in late-nineteenth-century textiles from the China National Silk Museum by high-performance liquid chromatography coupled with diode array detection and mass spectrometry. Data-dependent acquisition of tandem mass spectra provided some information not only on the molecular mass but also on the fragment ions obtained from precursor ions. These fragmentation patterns, obtained in a single experiment, proved to be useful for identification of the synthetic dyes extracted from the textile samples. In addition, it is worth noting that two anthraquinones, which are probably anthrapurpurin and flavopurpurin, and which were detected in printed cotton, can be used as the markers for distinguishing synthetic alizarin from natural alizarin. Note de contenu : - EXPERIMENTAL : Materials and methods - Extraction of dyed fibres - Equipment
- RESULTS AND DISCUSSION : Nitrophenol dye - Azo dyes - Triarylmethine dyes - Diarylmethane dyes - Anthraquinone dyesDOI : 10.1111/cote.12205 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12205 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25868
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible Eliminating material dependency in spectra measurement via non-neighbouring band regression / Hui-Liang Shen in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)
[article]
Titre : Eliminating material dependency in spectra measurement via non-neighbouring band regression Type de document : texte imprimé Auteurs : Hui-Liang Shen, Auteur ; Quan-Geng Ge, Auteur ; Zhi-Huan Zheng, Auteur ; Xin Du, Auteur ; Si-Jie Shao, Auteur ; John H. Xin, Auteur Année de publication : 2016 Article en page(s) : p. 186-192 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Couleur -- Analyse
Imagerie (technique)
RéflectanceIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A multispectral imaging system, after necessary calibration, can measure the spectral reflectances of colour samples accurately at a high spatial resolution. A limitation is that agreement of its measurements with those of a reference spectrophotometer is affected by the reflective characteristics of sample materials. The state-of-the-art methods aim to improve interinstrument agreement using the spectral values of neighbouring bands. However, it is observed that non-neighbouring bands are more effective in modelling interinstrument agreement. Inspired by this observation, the present paper proposes a method for eliminating material dependency by least-squares regression among non-neighbouring spectral bands. The fundamental issue of band selection is solved using a binary differential evolution algorithm. Experimental results confirm that the proposed method is effective in reflectance correction in terms of both spectral and colorimetric accuracy. The method is of practical application to multispectral imaging systems when measuring the spectral reflectances of colour samples with different materials. DOI : 10.1111/cote.12207 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12207 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25869
in COLORATION TECHNOLOGY > Vol. 132, N° 2 (04/2016) . - p. 186-192[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18025 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (1)
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
18025 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |