| Titre : |
Colour stripping of reactive-dyed cotton by ozone treatment |
| Type de document : |
texte imprimé |
| Auteurs : |
Semiha Eren, Auteur ; Buse Gümüs, Auteur ; Hüseyin Aksel Eren, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 466-471 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Colorants réactifs -- Détérioration
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).
Décapage
Ozonation
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Trials have been carried out to investigate the efficiency of ozone treatment in the colour stripping of reactive-dyed cotton fabrics. The trials were performed on a specially designed apparatus to inject ozone gas into the liquor passing through a perforated beam with fabric rolls on it, just like a beam dyeing machine with ozone venturi injection. Conventional reductive colour stripping was applied as the control treatment, and ozone treatment was applied for three different application times (15, 30, and 45 min). Trials were performed with seven selected reactive dyes having various chromophores and reactive groups. The results indicate that 45 min ozone treatment yielded the best colour stripping results among the three application times. Furthermore, the colour stripping percentages of the 45 min ozone treatment were higher for four of the tested dyes, the same for one of the tested dyes, and lower for two of the tested dyes compared with the control treatment, which consisted of conventional reductive colour stripping. Colour stripping of 90% and above was achieved for all samples of the 45 min ozone treatment. The chemical oxygen demand values of the colour stripping baths were compared: the average value of the 45 min ozone application baths was 105 mg l?1, and it was 1993 mg l?1 for the conventional reductive treatment baths. Consequently, a reduction in chemical oxygen demand of almost 94% was achieved by ozone treatment compared with conventional reductive treatment. The strength values of the fabrics after the respective treatments were similar, with a difference of only 3%. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Dyeing of the substrates - Colour stripping of the dyed cotton fabric - Ozone application procedure - Dyeing of the colour-stripped samples - Colour strenght and colour stripping percentage measurements - Wash fastness evaluation - Fabric tensile streght measurements - Chemical oxygen demand evaluation
- RESULTS AND DISCUSSION : Colour stripping percentages of the dyed fabrics after different stripping treatment - Colour yield and colour differences of the samples dyed black - Environmental benefit of the ozone treatment - Strength of the samples |
| DOI : |
10.1111/cote.12240 |
| En ligne : |
https://drive.google.com/file/d/1IJvuq1dyPpnMhj-oikCXhcQOwCmrzhtr/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27284 |
in COLORATION TECHNOLOGY > Vol. 132, N° 6 (12/2016) . - p. 466-471
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Colour stripping of reactive-dyed cotton by ozone treatment in COLORATION TECHNOLOGY, Vol. 132, N° 6 (12/2016)
