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COLORATION TECHNOLOGY / Society of dyers and colourists . Vol. 131, N° 5Mention de date : 10/2015Paru le : 26/09/2015 |
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Ajouter le résultat dans votre panierPolychlorinated biphenyls in pigments : inadvertent production and environmental significance / Lisa Rodenburg in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Polychlorinated biphenyls in pigments : inadvertent production and environmental significance Type de document : texte imprimé Auteurs : Lisa Rodenburg, Auteur ; Jia Guo, Auteur ; Robert M. Christie, Auteur Année de publication : 2015 Article en page(s) : p. 353-369 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie industrielle -- Aspect de l'environnement
Pigments -- Synthèse
Pollution
Polychlorobiphényles
Polychlorobiphényles -- Toxicologie
Substances dangereuses -- Evaluation du risqueIndex. décimale : 628.16 Analyse, traitement, pollution Résumé : Polychlorobiphenyls are toxic, bioaccumulative, and persistent chemicals whose intentional manufacture has been banned throughout the developed world. Polychlorobiphenyls may be generated inadvertently during the production of certain pigments, including diarylides. This inadvertent production is allowed under various regulatory schemes, such as the Toxic Substances Control Act in the United States and the Stockholm Convention on Persistent Organic Pollutants. Generally, these regulations require polychlorobiphenyl levels in batches of pigment to be less than certain regulatory limits, usually 50 ppm. A growing body of evidence suggests that the use of pigments is dispersing polychlorobiphenyls throughout the environment. Polychlorobiphenyl congeners associated with pigments have been found throughout the United States in sediments and in surface waters at levels exceeding the prevailing water quality standards. A recent Japanese government study reported measured polychlorobiphenyl concentrations well above 50 ppm in several commercial batches of azo pigments. A strong case may thus be argued that pigment manufacturers should modify existing production processes to reduce, ideally prevent, the formation of polychlorobiphenyls, or develop new pigments that do not have the potential to form polychlorobiphenyls. This paper, the result of a collaboration involving environmental scientists (LR and JG) and a pigment chemist (RC), reviews the evidence for environmental contamination from inadvertent polychlorobiphenyl production in specific pigments, together with a rationalisation of the conclusions based on the reaction mechanisms involved in their manufacture. Broad measures are proposed that might address these issues, both from environmental and from chemical perspectives. Note de contenu : - Polychlorinated biphenyls : the background
- Regulatory framework for polychlorinated biphenyls
- Industrial pigments that may contain polychrlorinated bisphenyls
- The presence of non-aroclor polychlorinated bisphenyls in pigments
- Concentrations of polychlorinated biphenyls in pigments
- Polychlorinated biphenyls from pigments in consumer products
- Evidence that polychlorinated biphenyls can be mobilized from pigment-containing products
- Levels of pigment-associated polychlorinated biphenyls in the environment
- The link between pigments and environmental polychlorinated biphenyls
- Temporal patterns of PCB 11
- Toxicity of PCB 11
- The mechanisms involved in polychlorinated bisphenyl formation during pigmentDOI : 10.1111/cote.12167 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12167 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24662
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Armenian cochineal (Porphyrophora hamelii) and purpurin-rich madder in ancient polychromy / Dimitrios Mantzouris in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Armenian cochineal (Porphyrophora hamelii) and purpurin-rich madder in ancient polychromy Type de document : texte imprimé Auteurs : Dimitrios Mantzouris, Auteur ; Ioannis Karapanagiotis, Auteur Année de publication : 2015 Article en page(s) : p. 370-373 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alizarine L'alizarine est un colorant rouge d'origine végétale, extrait de la racine de la garance des teinturiers (Rubia tinctorum L.), une plante vivace de la famille des Rubiacées, autrefois largement cultivée pour la teinture qu'elle fournissait.
Antiquités (objets anciens) -- Analyse
Cochenilles
Colorants -- Identification
Extraction par solvant
Garance et constituantsIndex. décimale : 667.2 Colorants et pigments Résumé : Samples removed from funeral figurines, dated the third to the second century BC (Hellenistic period) and found in Macedonia, Greece, are investigated using high-performance liquid chromatography. Two results are reported that provide new insights into ancient polychromy. Firstly, high-performance liquid chromatography results, in combination with historical information, indicate that insect species of cochineal, most probably Porphyrophora hamelii Brandt, was used in Hellenistic objects. Secondly, madder detected in the archaeological samples contains high amounts of purpurin (alizarin is either not detected or detected in trace). This relative composition, which is recorded using the hydrochloric acid method for dyestuff extraction, is consistent with that prepared from wild madder (Rubia peregrina L.), which is a common plant in the Mediterranean region. Note de contenu : - Solvents and chemicals
- Samples for analysis
- Sample preparation
- Chromatography
DOI : 10.1111/cote.12169 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12169 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24663
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Dyeability of polyurethane nanofibres with disperse dyes / Awais Khatri in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Dyeability of polyurethane nanofibres with disperse dyes Type de document : texte imprimé Auteurs : Awais Khatri, Auteur ; Shamshad Ali, Auteur ; Abdul Khalique Jhatial, Auteur ; Seong Hun Kim, Auteur Année de publication : 2015 Article en page(s) : p. 374-378 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Electrofilature
Morphologie (matériaux)
Nanofibres
Polyuréthanes
Structure chimique
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Nanofibres enjoy broad technical applications in filtration, medical, biosensing, functional, and high-performance textiles. Recent trends/developments in nanofibre research have also focused on the coloration of nanofibres. In this context, polyurethane nanofibre webs, which have been commercially successful, were electrospun and dyed with a high-energy-level CI Disperse Red 167:1 dye and a low-energy-level CI Disperse Blue 56 dye by the pad-dry-cure method. The dyed polyurethane nanofibres exhibited good colour strength values with acceptable colour fastness. Results revealed that the high-energy-level dye produced slightly better colour strength than the lower-energy-level dye. Further, scanning electron microscopy images showed that the morphologies of dyed and undyed nanofibres were almost identical. Note de contenu : - EXPERIMENTAL : Materials - Electrospinning - Dyeing of polyurethane nanofibre - Measurements
- RESULTS AND DISCUSSION : Chemical structure of polyurethane nanofibres - Effect of curing temperature and time - Effect of dye concentration on colour strenght - Colour fastness properties - Morphology of polyurethane nanofibresDOI : 10.1111/cote.12171 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12171 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24664
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Using ecological reducing agents instead of sodium sulphide in dyeing with CI Sulphur Black 1 / Jiming Yao in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Using ecological reducing agents instead of sodium sulphide in dyeing with CI Sulphur Black 1 Type de document : texte imprimé Auteurs : Jiming Yao, Auteur ; Chunxiao Dou, Auteur ; Sainan Wei, Auteur ; Mingyuan Zheng, Auteur Année de publication : 2015 Article en page(s) : p. 379-383 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Borohydrure de sodium Le tétrahydruroborate de sodium, aussi appelé borohydrure de sodium, est un composé chimique constitué d'atomes de bore, de sodium et d'hydrogène. Sa formule brute est NaBH4.
C'est un agent réducteur utilisé notamment dans l'industrie pharmaceutique en tant que source d'hydrures H-. C'est un solide blanc, souvent rencontré sous forme de poudre.
Le borohydrure de sodium absorbe l'humidité de l'air (il est hygroscopique). Il réagit avec l'eau et dégage lentement du dihydrogène, un gaz inflammable/explosif. Selon la classification européenne des produits chimiques, il est enregistré avec la phrase de risque R14 "réagit violemment au contact de l'eau". Le produit se décompose à plus de 400 °C sans fondre. Sa décomposition est violente et exothermique avec l'eau.
Chimie textile
Colorants
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
Glucose
Hydroxyde de sodiumL'hydroxyde de sodium, appelé également soude caustique7, est un corps chimique composé minéral de formule chimique NaOH, qui est à température ambiante un solide ionique. Fusible vers 318 °C, il se présente généralement sous forme de pastilles, de paillettes ou de billes blanches ou d'aspect translucide, corrosives et très hygroscopiques. Il est très soluble dans l'eau et légèrement soluble dans l'éthanol.
La solution d'hydroxyde de sodium, souvent appelée soude, est une solution aqueuse transparente. Concentrée, elle est corrosive et souvent appelée lessive de soude.
Les propriétés chimiques de l'hydroxyde de sodium sont surtout liées à l'ion hydroxyde HO- qui est une base forte. En outre, l'hydroxyde de sodium réagit avec le dioxyde de carbone (CO2) de l'air et se carbonate.
La solubilité de la soude caustique dans l'eau augmente avec la température, à pression constante ou ambiante.
Réduction (chimie)
Sulfate d'hydrazineLe sulfate d'hydrazine est un composé chimique de formule brute N2H6SO4. Il s'agit du sel d'hydrazine N2H4 et d'acide sulfurique H2SO4. Il se présente sous la forme d'une poudre blanche cristallisée inodore et incombustible, soluble dans l'eau chaude. C'est un intermédiaire de la préparation de l'hydrazine pure.
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Although low-cost sodium sulphide is used as a reducing agent in most sulphur dyeing processes, it is considered to be environmentally unfavourable because of the resultant contaminated wastewater and the toxic hydrogen sulphide generated during the dyeing process. In the present paper, hydrazine sulphate, glucose, and sodium borohydride in the presence of sodium hydroxide were used as ecologically safe reduction systems for the CI Sulphur Black 1 dyeing of cotton fabric, and results were compared with those obtained using sodium sulphide. Dyeing processes were carried out at 90 °C for 60 min, and the colour yield (the K/S value), dyeing fastness, and breaking strength of dyed fabrics after soaping were measured. Response surface methodology was employed for experimental design and optimisation of results. Mathematical model equations were derived and statistical analysis carried out by computer simulation programming using Minitab v.15. At a dosage of 0.8 g l?1 of CI Sulphur Black 1, the optimum sodium borohydride reduction system (sodium borohydride 0.47 g l?1, sodium hydroxide 0.65 g l?1) exhibited the highest colour yield and the lowest chemical oxygen demand of the residual dyebath. Note de contenu : - Optimisation of the dosage of reducing agents according to colour yield
- Comparison of dyeing performance with optimum reduction systemsDOI : 10.1111/cote.12168 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12168 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24665
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Structural and dyeing properties of aramid treated with 2-phenoxyethanol / Genyang Cao in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Structural and dyeing properties of aramid treated with 2-phenoxyethanol Type de document : texte imprimé Auteurs : Genyang Cao, Auteur ; Dan Sheng, Auteur ; Weilin Xu, Auteur ; Xin Wang, Auteur Année de publication : 2015 Article en page(s) : p. 384-388 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse structurale (ingénierie)
Fibre aramide
Phénoxyéthanol
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, 2-phenoxyethanol was used as a carrier to realise the bright-colour dyeing of aramid fibre. Fourier transform infrared, X-ray diffraction, and thermal analyses were used to characterise the modification of 2-phenoxyethanol on the aramid fibre structure. The dyeing performance, including the K/S value and the dye uptake, was tested by varying the concentration of 2-phenoxyethanol and related experimental parameters. Structural analysis suggests strengthened H-bonds, lower crystallinity, and slightly lower thermal stability after 2-phenoxyethanol treatment, which can be explained by the swelling effect of 2-phenoxyethanol, enlarging the amorphous structure through the reassembly of hydroxyl bonding to the aramid fibre. The dyeing performance can be improved by increasing the dyeing time, the temperature, and the concentration of sodium nitrate under slightly acidic condition. Colour fastness tests showed that 2-phenoxyethanol treatment does not affect the rubbing fastness but lowers the wash fastness slightly. Dyeing of aramid is crucial under special environmental conditions in which the products must withstand a harsh environment while retaining a bright colour. Note de contenu : - EXPERIMENTAL : Materials - Dyeing - Measurements and characterisations
- RESULTS AND DISCUSSIONS : Structural analysis - Dyeing performanceDOI : 10.1111/cote.12165 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12165 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24666
in COLORATION TECHNOLOGY > Vol. 131, N° 5 (10/2015) . - p. 384-388[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible A diagnostic expert system for the dyeing of protein fibres / Weethima Sawatwarakul in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : A diagnostic expert system for the dyeing of protein fibres Type de document : texte imprimé Auteurs : Weethima Sawatwarakul, Auteur ; Jeff Joines, Auteur ; Renzo Shamey, Auteur Année de publication : 2015 Article en page(s) : p. 389-395 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Contrôle technique
Expertises
Fibres animales
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Coloration of protein fibres is characterised by many variables, each with a different effect on the final product. Because the process can be rather complicated, it is often difficult to achieve the right colour in the first dyeing attempt. Determining the root causes of a given problem tends to be even more challenging. While quality requirements in the textile industry have become increasingly rigorous, seasoned coloration experts have become rather scarce. This situation has exacerbated the need for the development and implementation of expert systems to augment available expertise in this domain. In addition, benefits associated with computer-based diagnostic systems have become increasingly evident over the past few decades, and the field remains an active area of research. Here we report the design and development of a diagnostic expert system for the dyeing of protein fibres. The system is designed to aid in the identification of root causes of problems with a view to enabling users to arrive quickly at remedial solutions. The performance of the system has been tested and evaluated by human experts and deemed to be highly satisfactory. This diagnostic system can be used to teach students, may be utilised by novice colourists as a problem-solving tool, and may be employed as a supplementary knowledge resource by seasoned dyers. Note de contenu : - Expert system applications in the textile industry
- Expert system development methodology
- Construction of knowledge baseDOI : 10.1111/cote.12166 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12166 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24667
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Characterisation of novel regenerated cellulosic, viscose, and cotton fibres and the dyeing properties of fabrics / Taina Kamppuri in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Characterisation of novel regenerated cellulosic, viscose, and cotton fibres and the dyeing properties of fabrics Type de document : texte imprimé Auteurs : Taina Kamppuri, Auteur ; Marianna Vehviläinen, Auteur ; Arja Puolakka, Auteur ; Mari Honkanen, Auteur ; Minnamari Vippola, Auteur ; Marja Rissanen, Auteur Année de publication : 2015 Article en page(s) : p. 396-402 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Colorants
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 cellulosiques
Fibres textiles -- Propriétés tinctoriales
Fibres végétales -- Propriétés tinctoriales
Morphologie (matériaux)
Structure cristalline (solide)
Teinture -- Fibres textiles
Teinture -- Fibres textiles synthétiques
ViscoseIndex. décimale : 667.3 Teinture et impression des tissus Résumé : There is a global demand for constant increase in the production of textile fibres. Currently, the market for cellulosic fibres is dominated by cotton and viscose fibres. However, new alternative cellulosic fibres are being sought to meet the growing demand. The dyeing properties of novel fibres aiming at the marketplace are among the properties that determine their applicability to textiles. Recently, a novel process for producing cellulosic fibres, the Biocelsol process, has been scaled up so that the spinning of yarn from Biocelsol fibres is now possible. In this study, the reactive dye Levafix CA Blue was applied to cellulosic fabrics made from viscose, cotton, and Biocelsol yarns. The crystalline structure and morphology of the fibres were studied by Fourier transform infrared spectroscopy and field-emission scanning electron microscopy. The crystalline structure and morphology of the Biocelsol fibres resembled those of viscose fibres, but, owing to higher water absorption, the Biocelsol fabric had a higher dye exhaustion. The colour yield of the Biocelsol fabric was 62% and 41% higher than that of cotton and viscose fabrics respectively, suggesting that less dye is needed to gain a shade in Biocelsol fabric than in viscose and cotton fabrics. Note de contenu : - EXPERIMENTAL : Materials - Characterisation of fibres - Properties of yarns and fabrics - Dyeing of fabrics - Fastness properties
- RESULTS AND DISCUSSIONS : Characterisation of cellulosic fibres - Properties of yarns and fabrics - Reactive dyeing of fabrics - Colour fastnessDOI : 10.1111/cote.12163 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12163 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24668
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Improvement of the standard method for assessing colour fastness to wet rubbing / Keiko Suganuma in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Improvement of the standard method for assessing colour fastness to wet rubbing Type de document : texte imprimé Auteurs : Keiko Suganuma, Auteur Année de publication : 2015 Article en page(s) : p. 403-411 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : 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).
Essais dynamiques
Résistance aux frottements humides
Solidité de la couleur
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Colour fastness to rubbing is evaluated by the degree of staining of a standard adjacent cotton cloth. However, some kinds of dye usually stain other textiles to a greater extent than cotton under wet conditions. In this work, rubbing fastness tests were carried out with various kinds of adjacent cloth in order to examine the factors affecting the wet rubbing fastness, and a more practical evaluation method using adjacent rubbing cloth was proposed. Dye transfer from the dyed fabric to the adjacent cloth depended on the affinity of the dyes for the fibre material of the dyed fabric and the adjacent cloth under wet conditions, in addition to the friction coefficient between the fabrics. A standard adjacent cloth should have a high staining property. The nylon staple cloth is preferred for fabrics dyed with vat, disperse, and acid dyes because it receives the most dye from rubbing with them. Note de contenu : - EXPERIMENTAL : Samples of dyed fabric - Samples of white cloth - Rubbing test - Measurement of friction coefficient
- RESULTS AND DISCUSSION : Friction coefficients - Dry rubbing fatness - Wet rubbing fastness of vat dyes - Wet rubbing fastness of disperse dyes - Wet rubbing fastness of acid dyes - Wet rubbing fastness of reactive dyesDOI : 10.1111/cote.12170 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12170 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24669
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