| Titre : |
Synthesis of N-[4-(dimethylalkylammoniomethyl) benzoyl]caprolactam chlorides as cationic bleach activators for low-temperature bleaching of cotton fabric under near-neutral pH conditions |
| Type de document : |
texte imprimé |
| Auteurs : |
Dong Wei, Auteur ; Chang Sun, Auteur ; Mengze Wang, Auteur ; Jinmei Du, Auteur ; Changhai Xu, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 432-436 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents de blanchiment
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).
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Low-temperature bleaching of cotton fabric can be achieved by incorporating a so-called bleach activator into an aqueous solution of hydrogen peroxide. In this study, a series of N-[4-(dimethylalkylammoniomethyl)benzoyl]caprolactam chlorides were synthesised for use as cationic bleach activators with various alkyl chain lengths. All these synthesised cationic bleach activators were confirmed by 1H and 13C nuclear magnetic resonance spectroscopy and mass spectroscopy. Bleaching experiments revealed that these synthesised bleach activators were effective for bleaching of cotton fabric at 50 °C under near-neutral pH conditions, but the alkyl chain lengths had a great influence on their bleaching performance. Increasing the alkyl chain length from 2 to 6 carbon atoms could slightly enhance bleaching performance, while increasing the alkyl chain length from 8 to 16 carbon atoms markedly reduced bleaching performance. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of cationic bleach activators with various chain lengths - Bleaching of cotton fabric
- RESULTS AND DISCUSSION : Synthesis of cationic bleach activators - Bleaching performance |
| DOI : |
10.1111/cote.12116 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12116 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22505 |
in COLORATION TECHNOLOGY > Vol. 130, N° 6 (12/2014) . - p. 432-436
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Synthesis of N-[4-(dimethylalkylammoniomethyl) benzoyl]caprolactam chlorides as cationic bleach activators for low-temperature bleaching of cotton fabric under near-neutral pH conditions in COLORATION TECHNOLOGY, Vol. 130, N° 6 (12/2014)
