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Mordant dye application on cotton : optimisation and combination with natural dyes / Yi Ding in COLORATION TECHNOLOGY, Vol. 133, N° 5 (10/2017)
[article]
Titre : Mordant dye application on cotton : optimisation and combination with natural dyes Type de document : texte imprimé Auteurs : Yi Ding, Auteur ; S. Freeman, Auteur Année de publication : 2017 Article en page(s) : p. 369-375 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : 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).
Mordançage (teinture)
Produits naturels
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : It is well known that cotton fibres can be dyed through the formation of coordinate bonds involving cellulose chains, mordants such as alum, and natural dyes such as alizarin. Similarly, synthetic dyes known as mordant acid dyes can be used to dye wool fibres. Unlike mordant dyes on wool, the fastnesses of natural dyes on cotton are often low. Although concerns surrounding textile sustainability have sparked renewed interest in the use of natural dyes, extensive replacement of synthetic dyes with natural dyes is neither practical nor fundamentally possible. However, similarities in dyeing methods using mordant and natural dyes raise the possibility of using mordant dyes as alternatives to natural dyes in the dyeing of cotton. Further, the potential for combining suitable dyes from these two classes to expand the colour gamut currently available from natural dyes on cotton seem worthy of exploration. The results of this study indicate that shades comparable with those produced by natural dyes can be obtained on cotton using select mordant dyes following Fe2+ and Al3+ pretreatments. The best results were obtained using a two-step/two-bath process and dyes such as CI Mordant Blue 13 and CI Mordant Orange 6. In evaluations of mordant and natural dye combinations using the two mordant dyes logwood and Osage orange as prototypes, interesting fabric shades were obtained. However, the fastness properties of these dyes must be improved in order to produce commercially viable dyeings. Note de contenu : - EXPERIMENTAL : Materials - Optimised dyeing procedure for natural dyes and mordant dyes - Combination dyeing with mordant and natural dyes - Measurements
- RESULTS AND DISCUSSION : Mordant dye trials - Optimised dyeing procedure for mordant and natural dyes - Mordant and natural dye combinationsDOI : 10.1111/cote.12288 En ligne : https://drive.google.com/file/d/14GtIlb6NjA_JSYwd033x0NalU5KrUXSW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29195
in COLORATION TECHNOLOGY > Vol. 133, N° 5 (10/2017) . - p. 369-375[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19221 - Périodique Bibliothèque principale Documentaires Disponible More security in leather dyeing by observing build-up power an affinity numbers / L. Rooryck in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 4 (07-08/1977)
[article]
Titre : More security in leather dyeing by observing build-up power an affinity numbers Type de document : texte imprimé Auteurs : L. Rooryck, Auteur Année de publication : 1977 Article en page(s) : p. 85-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Cuirs et peaux -- Teinture
Essais (technologie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In most works, selection of dyes for the dyeing of leather is based on long years of practical experience. Yet accelerating changes in fashion which involve changes in processing methods, particularly regarding retanning, fatliquoring, etc., as well as changes in countries of origin of skins, result in a change of behaviour of these leathers during dyeing. Frequently operational considerations prevent changes in substrate and in method of dyeing. Dyeing results can, however, be substantially improved by an optimum dye selection in accordance with recently established criteria. The dyeing behaviour of any dye on leather is influenced by many factors. In is difficult to create conditions that are exactly reproducible. Under the name of "Dermagen testing method" a process has been developed which is characterised by the mass-dyeing of a leather pulp made of shavings of a standard-tanned leather.i Depending on the standard depth2 figures are established for build-up power, the saturation limit as well as the affinity of a dye. On the basis of the numbers of affinity and the build-up power dues can be won about the behaviour of dye or combinations of dyes on leathers of varying pretreatment. Thus the selection of dyes on the basis of their dyeing behaviour is greatly simplified. Note de contenu : The dermagen testing method
- Principle of the dermagen testing method
- exampe of pure-chrome leather pulp (high-affinity)
- Example of a low-affinity mass
- Standard depths
- Examples
- Build-up power and saturation limit
- Assessment of build-up power and saturation limit of leather dyes
- Significance of build-up of power and saturation limit
- Behaviour concerning affinity
- Assessment of the affinity numbers of leather dyes
- Test procedure
- Examples
- Significance of affinity numbersEn ligne : https://drive.google.com/file/d/1f8-X88YphMzCG9vXV19zlEV5Pf64spfh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34120
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61, N° 4 (07-08/1977) . - p. 85-87[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007113 - Périodique Bibliothèque principale Documentaires Disponible More security in leather dyeing by observing build-up power and affinity numbers / L. Rooryck in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)
[article]
Titre : More security in leather dyeing by observing build-up power and affinity numbers Type de document : texte imprimé Auteurs : L. Rooryck, Auteur Année de publication : 1978 Article en page(s) : p. 85-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Cuirs et peaux -- Teinture
Essais (technologie)
EvaluationIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In most works, selection of dyes for the dyeing of leather is based on long years of practical experience. Yet accelerating changes in fashion which involve changes in processing methods, particularly regarding retanning, fatliquoring, etc., as well as changes in countries of origin of skins, result in a change of behaviour of these leathers during dyeing. Frequently operational considerations prevent changes in substrate and in method of dyeing. Dyeing results can, however, be substantially improved by an optimum dye selection in accordance with recently established criteria. The dyeing behaviour of any dye on leather is influenced by many factors. In is difficult to create conditions that are exactly reproducible. Under the name of "Dermagen testing method" a process has been developed which is characterised by the mass-dyeing of a leather pulp made of shavings of a standard-tanned leather. Depending on the standard depth figures are established for build-up power, the saturation limit as well as the affinity of a dye. On the basis of the numbers of affinity and the build-up power dues can be won about the behaviour of dye or combinations of dyes on leathers of varying pretreatment. Thus the selection of dyes on the basis of their dyeing behaviour is greatly simplified. Note de contenu : - The dermagen testing method
- Principle of the dermagen testing method
- Example of a pure-chrome leather pulp (high-affinity)
- Example of a low-affinity mass
- Standard depths
- Examples
- Build-up power and saturation limit
- Assessment of build-up power and saturation limit of leather dyes
- Significance of build-up of power and saturation limit
- Behaviour concerning affinity
- Assessment of the affinity numbers of leather dyes
- Test procedure
- Examples
- Significance of affinity numbersEn ligne : https://drive.google.com/file/d/1f8-X88YphMzCG9vXV19zlEV5Pf64spfh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35214
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61 et 62 (Années 1977 et 1978) . - p. 85-87[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008597 - Périodique Archives Documentaires Exclu du prêt Multifunctional organic shockproof flexible sensors based on a composite of nickel phthalocyanine colourant, carbon nanotubes and rubber created with rubbing-in technology / Umair Asghar in COLORATION TECHNOLOGY, Vol. 138, N° 2 (04/2022)
[article]
Titre : Multifunctional organic shockproof flexible sensors based on a composite of nickel phthalocyanine colourant, carbon nanotubes and rubber created with rubbing-in technology Type de document : texte imprimé Auteurs : Umair Asghar, Auteur ; Khasan S. Karimov, Auteur ; Mohd Adib Ibrahim, Auteur ; Noshin Fatima, Auteur Année de publication : 2022 Article en page(s) : p. 176-183 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Air -- Humidité
Caoutchouc
Capteurs (technologie)
Caractérisation
Colorants
Humidité -- Mesure
Nanotubes de carbone à parois multiplesUn nanotube de carbone multifeuillet est constitué de plusieurs feuillets de graphènes enroulés les uns autour des autres. Il existe deux modèles pour décrire la structure des nanotubes multifeuillets :
- le modèle poupée russe: les plans de graphène sont arrangés en cylindres concentriques ;
- le modèle parchemin: un seul feuillet de graphène est enroulé sur lui-même, comme une feuille de papier.
Phtalocyanine de nickel
Technologie médicale
Température
Température -- ContrôleIndex. décimale : 610 Sciences médicales. Médecine : classer les soins à domicile à 649.8, la médecine vétérinaire à 636.089 Résumé : An organic multifunctional sensor based on a composite of nickel phthalocyanine colourant, multi-walled carbon nanotubes and rubber is investigated in this work. The whole surface-type device was fabricated over rubber substrate with rubbing-in technology, including multi-walled carbon nanotubes-based electrodes. The proposed shockproof and flexible sensor is investigated in terms of its electric parameters, that is, its resistance and impedance, while varying the humidity (42%-90% relative humidity), frequency (0.1-200 kHz) and temperature (30-68°C). The effect of each parameter is explained in depth to enhance the physics behind each outcome. The results demonstrate that impedance and resistance decrease with increases in temperature and humidity, while the sensitivity of the device decreases with an increase in frequency. These types of devices can be utilised by the medical industry for monitoring the humidity and temperature of patients while undergoing physiotherapy treatment. Note de contenu : - Electric characterisation
- Humidity effect
- Temperature effect
- Frequency effect
- Table 1 : Sensitivity of the device (S RH) at 25°C and different frequencies as a function of relative humidity
- Table 2 : Summary of the device's sensitivity with respect to temperature (S T) ad different frequenciesDOI : https://doi.org/10.1111/cote.12581 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12581 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37848
in COLORATION TECHNOLOGY > Vol. 138, N° 2 (04/2022) . - p. 176-183[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23518 - Périodique Bibliothèque principale Documentaires Disponible N-methylpicolinium esters as co-initiators in dye photosensitiser systems for the polymerisation of acrylate monomers / Janina Kabatc in COLORATION TECHNOLOGY, Vol. 127, N° 5 (2011)
[article]
Titre : N-methylpicolinium esters as co-initiators in dye photosensitiser systems for the polymerisation of acrylate monomers Type de document : texte imprimé Auteurs : Janina Kabatc, Auteur Année de publication : 2011 Article en page(s) : p. 314-321 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Colorants
Photosensibilisants
PolymérisationTags : 'Esters N-méthy picolinium' 'Co-initiateurs' Photosensibilisateur Acrylates Polymérisation Photoinitiation Colorants Index. décimale : 667.3 Teinture et impression des tissus Résumé : The photoinitiation ability of several dyeing photoinitiating systems composed of positively charged N,N’-diethylthiacarbocyanine iodide and 3-ethyl-2-(p-N,N-dimethylaminostyryl)benzothiazolium iodide acting as light absorbers, n-butyltriphenylborate anion being the electron donor, and diphenylacetic acid (N-methylpyridinium)methyl ester cation acting as a ground state electron acceptor are compared. Both co-initiators in the polymerising formulations were present, either as tetrabutylammonium salt and diphenylacetic acid (N-methylpyridinium)methyl ester perchlorate, respectively, or as an ion pair. The best photoinitiating ability was observed when the borate anion and diphenylacetic acid (N-methylpyridinium)methyl ester cation formed an ion pair. Modification of the ability of the photoinitiating system was concerned with the possibility of elimination of a diffusion process. This was achieved by synthesis of a properly designed dye-possessing diphenylacetic acid (N-methylpyridinium)methyl ester group. This dye, after electron transfer, forms an N-methylpicolinium derivative radical that fragments, forming an (N-methylpyridinium)methyl radical, organic acid anion and reduced dye. Finally, from a combination of either an N-methylpicolinium derivative or alkyltriphenylborate salts with a suitable sensitiser or a properly designed dye and alkyltriphenylborate salt, two radicals can be generated per one absorbed photon, thus enhancing the overall efficiency of the polymerisation. Note de contenu : Examples of the dye-sensitised polymerisation reactions : mechanism involved and efficiency of the reaction DOI : 10.1111/j.1478-4408.2011.00315.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00315.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12175
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Code-barres Cote Support Localisation Section Disponibilité 13324 - Périodique Bibliothèque principale Documentaires Disponible Naphthoylenebenzimidazolone dyes as one-component photoinitiators / Rafal Strzelczyk in COLORATION TECHNOLOGY, Vol. 133, N° 2 (04/2017)
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