| Titre : |
Environmentally friendly coloration of cotton by the UV-induced photografting of a-bromoacrylamido dyes |
| Type de document : |
texte imprimé |
| Auteurs : |
Yuanyuan Dong, Auteur ; Jinho Jang, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 296-304 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse spectrale
Copolymérisation
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).
Greffage (chimie)
Photochimie
Teinture -- Fibres textiles
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Conventional wet dyeing based on dye diffusion and adsorption in water requires large amounts of salt, time, and energy. ?-Bromoacrylamido dyes are photografted onto cotton at room temperature as an environmentally friendly coloration process. Dye-originated radicals are produced by the photoscission of the carbon–sulfur and carbon–bromine bonds of the dyes and subsequently abstract hydrogen atoms to generate cellulose radicals which can initiate graft copolymerisation. About 88% of the dyes are polymerised, and the degree of polymerisation is estimated to be 12.7 or more, which was substantiated by mass and elemental analyses. The colour yield of the photografted cotton is seven times higher than that of conventional dyeing. Furthermore, good colour fastness properties are attributed to the water-insoluble polymeric dyes formed. |
| Note de contenu : |
- EXPERIMENTAL : Materials and methods - Photografting of ?-bromoacrylamido dyes - Characterisation of the photoreacted dyes - The assessment of dyeing
- RESULTS AND DISCUSSION : Elemental analysis - Mass spectrometric analysis - NMR analysis - IR and UV-vis spectroscopy - The effect of UV energy and photoinitiator and dye concentrations - Colour fastness properties |
| DOI : |
10.1111/cote.12094 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12094 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21782 |
in COLORATION TECHNOLOGY > Vol. 130, N° 4 (08/2014) . - p. 296-304
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Environmentally friendly coloration of cotton by the UV-induced photografting of a-bromoacrylamido dyes in COLORATION TECHNOLOGY, Vol. 130, N° 4 (08/2014)
