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The effect of electrolytes on the interaction of C. I. reactive orange 16-tetradecyltrimethylammonium bromide / Halide Akbas in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 2 (03-04/2013)
[article]
Titre : The effect of electrolytes on the interaction of C. I. reactive orange 16-tetradecyltrimethylammonium bromide Type de document : texte imprimé Auteurs : Halide Akbas, Auteur ; Tanzer Taner, Auteur Année de publication : 2013 Article en page(s) : p. 84-89 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides
Electrolytes
Spectrophotométrie
SurfactantsIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The aim of this study is to investigate the interaction of a cationic surfactant tetradecyltrimethyl ammonium bromide (TTAB) on the electronic absorption spectra of azo dye Reactive Orange 16 (RO16) and to observe the effects of the kind and concentration of electrolytes on these interactions by means of UV-Vis spectroscopy in submicellar and micellar concentration range at a certain temperature (303 K). TTAB affects the electronic absorption spectra of dye solution that is dye-surfactant interaction results into formation of complex and therefore, a decrease in maximum absorption spectra (1.577 at 494 nm). The electrolyte anions cause an increase on the absorbance of TTAB–RO16 ionpair complex in the following order: Br– > Cl– > SO4 > NO3 > CN– and also for cations; Na+ > K+ > NH4 >Mg2+. The increase or decrease on absorption spectra of RO16-TTAB solution depends on concentration range of the electrolyte added. Note de contenu : - The influence of concentration of electrolyte
- The influence of the kind of electrolyteDOI : 10.3139/113.110235 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17884
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 50, N° 2 (03-04/2013) . - p. 84-89[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14844 - Périodique Bibliothèque principale Documentaires Disponible The sensitivity and impact of dye structure and fibre micronaire on the increased dyeability of bioengineered cotton fibres / Özgür Ceylan in COLORATION TECHNOLOGY, Vol. 129, N° 4 (08/2013)
[article]
Titre : The sensitivity and impact of dye structure and fibre micronaire on the increased dyeability of bioengineered cotton fibres Type de document : texte imprimé Auteurs : Özgür Ceylan, Auteur ; Lieve Van Landuyt, Auteur ; Florence Goubet, Auteur ; Karen de Clerck, Auteur Année de publication : 2013 Article en page(s) : p. 239–245 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides
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
Micronaire
Oligochitine
Organismes génétiquement modifiés
Plantes transgéniques
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Previous research reported on a screening method to assess the functionalisation of bioengineered cotton fibres through the absorption of CI Acid Orange 7. The aim of the present paper is to extend this study to different dye classes. Thus the dye absorption of bioengineered cotton fibres containing oligochitin is studied for a series of dye classes. Statistically significant differences were found between cotton lines designed to produce oligochitin in the fibre and their respective controls for all tested dyes, confirming previous results with CI Acid Orange 7. Further, although variations in micronaire influenced dye absorption, it was confirmed for all dyes tested as well as for CI Acid Orange 7 that the oligochitin production had a larger impact on the exhaustion values than the differences in micronaire. The method described in this paper can be applied as a screening tool to meet the challenge of working with small quantities of fibrous materials. Moreover it shows the potential that the incorporated oligochitin has for increasing dyeability with a wide range of dyes and creating fibres with more versatile reactivity. DOI : 10.1111/cote.12043 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12043/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19034
in COLORATION TECHNOLOGY > Vol. 129, N° 4 (08/2013) . - p. 239–245[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15394 - Périodique Bibliothèque principale Documentaires Disponible Thermodynamics of leather dyeing : III. The preparation of chrome-tanned hide powders and their interaction with C.I. Acid Orange 7 / A. T. Atto in JOURNAL OF THE SOCIETY OF LEATHER TRADES' CHEMISTS, Vol. 55, N° 3 (03/1971)
[article]
Titre : Thermodynamics of leather dyeing : III. The preparation of chrome-tanned hide powders and their interaction with C.I. Acid Orange 7 Type de document : texte imprimé Auteurs : A. T. Atto, Auteur ; H. E. Nursten, Auteur Année de publication : 1971 Article en page(s) : p. 84-103 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides
Cuirs et peaux -- Teinture
Entropie (thermodynamique)
Orange (couleur)
Poudre de peaux
Tannage au chrome
ThermodynamiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A procedure has been developed for chrome-tanning hide powder and it has been used to prepare a range of chrome-tanned hide powders with increasing chrome contents. The interaction of these tanned hide powders with the pure dye acid of C.I. Acid Orange 7 has been studied thermo-dynamically. The saturation capacity of the tanned hide powder for the acid dye increases almost linearly with the amount of chromium present, a chrome oxide content of about 3 % leading to a saturation capacity about twice that of untanned hide powder. The saturation capacities can be sur¬prisingly large, rising to almost three molecules dye bound per chromium atom. Chrome-tanned hide powder has been found to have a lower affinity for the acid dye than untanned, which is connected with the much larger satura¬tion capacity and the consequently lower activity in the fibre produced by a given amount of dye on the hide powder. The affinity at 60°c is independent of minor differences in tannage, but decreases with increasing amounts of chromium. The affinity increases with temperature in the range 25-75°c, while the saturation capacity decreases. Ageing chrome-tanned hide powder does not affect the affinity, but decreases somewhat the saturation capacity. Dyeing chrome-tanned hide powder appears to be exothermic and the entropies of dyeing are positive, the process thus being thermodynamically similar to dyeing untanned hide powder. Note de contenu : - Preparation of a number of batches of chrome-tanned hide powder (A) C20 hide powder
- (B) ATA hide powder, Batch 1
- (C) ATA Hide powder, Batch 2
- (D) ATA hide powder (relatively very low chrome content) batch 3a
- (E) ATA hide powder (relatively High chrome content), Batch 3b
- Analysis of the tanned hide powders
- Purification and analysis of the dye used
- Dyeing
- Reversibility of dyeing
- Table 1 : Analysis of the tanned hide powders
- Table 2 : Experimental data and quantities calculated therefrom
- Table 3 : Saturation capacities of some chrome-tanned hide powders for C.I. Acid Orange 7
- Table 4 : Affinity of C.I. Acid Orange 7 for some chrome-tanned hide powders
- Table 5 : Variation of affinity of C.I. Acid Orange 7 for chrome-tanned hide powder with chrome content
- Table 6 : Comparison of the activity of C.I. Acid Orange 7 in tanned and untanned hide powder
- Table 7 : Heats and entropies of dyeing of some chrome-tanned hide powders with C.I. Acid Orange 7Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35668
in JOURNAL OF THE SOCIETY OF LEATHER TRADES' CHEMISTS > Vol. 55, N° 3 (03/1971) . - p. 84-103[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007091 - Périodique Bibliothèque principale Documentaires Disponible Thermodynamics of leather dyeing / A. T. Atto in JOURNAL OF THE SOCIETY OF LEATHER TRADES' CHEMISTS, Vol. 55, N° 5 (05/1971)
[article]
Titre : Thermodynamics of leather dyeing : IV. Dyeing of chrome-tanned hide powder with simple acid dyes Type de document : texte imprimé Auteurs : A. T. Atto, Auteur ; H. E. Nursten, Auteur Année de publication : 1971 Article en page(s) : p. 163-174 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides
Cuirs et peaux -- Teinture
Entropie (thermodynamique)
Poudre de peaux
Tannage au chrome
Titrage thermométriqueIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The previous study of the interaction between chrome-tanned hide powder and C.I. Acid Orange 7 has been extended to seven other simple acid dyes in the form of their specially purified dye acids. Good reciprocal plots were obtained at 45 and 60°c, leading to saturation capacities greater than 2 meq/g dry hide substance, except for the dye acids bearing sulphonic groups peri to the azo link. The affinities obtained are lower than those for untanned hide powder and this must be viewed as a consequence of the much greater saturation capacity, which leads to the production of a lower activity in the fibre by a given amount of dye. The affinity of a dye acid for chrome-tanned hide powder increases with the insertion of a methyl group or a fused-on benzene ring, but movement of a sulphonic group to a position peri to the azo link reduces it. Overall, the standard heats and entropies of dyeing chrome-tanned hide powder are of the same sign and order of magnitude as those for the untanned substrate. The thermodynamics of dyeing chrome-tanned hide powder thus do not appear to differ fundamentally from those of dyeing untanned hide powder. Note de contenu : - EXPERIMENTAL : The dyes - Substrates - Dyeing
- RESULTS AND DISCUSSION : The reciprocal plot - Titration curves - Saturation capacities - Affinities - Heats of dyeing - Entropies of dyeing
- Table 1 : Experimental data and quantities calculated therefrom
- Table 2 : Saturation capacities, affinities and ratio dye acid/Cr atom of chrome-tanned ATA 1114e powder for a range of simple dye acids
- Table 3 : Affinities of some simple dye acids for untanned and tanned hide powder kcal/mole
- Table 4 : Heats and entropies of dyeing chrome-tanned hide powder with some simple dye acids at 45-60 °CPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35667
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Code-barres Cote Support Localisation Section Disponibilité 007093 - Périodique Bibliothèque principale Documentaires Disponible Two stage leather dyeing - A novel approach to minimize the dye discharge in the effluent / N. Vedaraman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 6 (06/2011)
[article]
Titre : Two stage leather dyeing - A novel approach to minimize the dye discharge in the effluent Type de document : texte imprimé Auteurs : N. Vedaraman, Auteur ; Chellappa Muralidharan, Auteur Année de publication : 2011 Article en page(s) : p. 184-189 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colorants acides
Cuirs et peaux -- Teinture
Procédés de fabrication
TeintureTags : Cuir Teinture 'Méthode teinture' 'Processus 'Réutilisation 'Colorant acide' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Large quantities of synthetic dyes are used in tanneries for coloring leathers. A significant portion of the dyes offered do not fix to the leather and the un-utilized dye is discharged in the effluent, which may be environmentally harmful as it may require a long time for degradation. Depending upon the wastewater treatment methods adopted, sometimes these dyes may generate several highly toxic compounds. These dyes, when discharged into water bodies or land, may also cause severe environmental and health problems. Up to 10% (weight/weight of leather) dye is used in the dyeing process of conventional leather making. There are several physiochemical methods reported for treatment of dyes in effluent, which mainly degrade and remove the dye in effluent and do not aim for recovery and reuse of dye. In the present study an attempt has been made to modify the dyeing process in such a way that minimum dye is discharged in the effluent. Most of the un-utilized dye is recovered and recycled or re-utilized in subsequent dyeing. The visual and instrumental examination of the dyed leathers with this modified dyeing method led to encouraging results. This approach has not only reduced the dye discharge after dyeing but also facilitated substantial reduction in dye input by reuse thereby providing economic benefit to the tanners. The study was carried out for a specific synthetic acid dye and should be also be easily extended to other class of dyes. Note de contenu : - Leather dyeing
- Conventional dyeing
- Two stage equilibrium dyeing
- Two stage with 20 % excess dyeing to match shade
EXPERIMENTAL : Materials and methods - Neutralization - dyeing - Fatliquoring and fixingEn ligne : https://drive.google.com/file/d/1Z1Z3S_UVj4_A6saTpib-w7ceCDoFUx5E/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11717
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 6 (06/2011) . - p. 184-189[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16697 - Périodique Bibliothèque principale Documentaires Disponible