| Titre : |
Photofading of phenylazo-aniline, -pyridone and -quinolone disperse dyes on a nylon 6 substrate |
| Type de document : |
texte imprimé |
| Auteurs : |
Yasuyo Okada, Auteur ; Zenzo Morita, Auteur ; Toshio Hihara, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 86-98 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
The photofading of phenylazo-aniline, -pyridone and -quinolone disperse dyes on nylon fabric was analysed using the Kubelka–Munk (K/S) spectra of fabrics exposed to a carbon arc in air. The exposure of dyed fabric through ultraviolet and coloured filters, which do not shield the main absorption band, showed a large decrease in the initial rate (KPA) of fading. Compared with the KPA values without filters, the values using filters were half as large for dyes without the nitro groups and a quarter as large for dyes with the nitro groups. The KPA values may be qualitatively explained by the sum of azo scission (decrease of K/S value at lambda max) and the conversion of nitro groups to nitroso groups. These phenomena occur, respectively, via thermal disproportionation reactions between hydrazinyl radicals (from the azo group) and the reaction between hydrazinyl and N-centred nitrosyl hydroxide radicals (from the nitro group). The azo scission is promoted by N-centred nitrosyl hydroxide radicals via the latter reactions. |
| DOI : |
10.1111/j.1478-4408.2009.00179.x |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2009.00179.x/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4853 |
in COLORATION TECHNOLOGY > Vol. 125, N° 2 (2009) . - p. 86-98
Aller sur edunet
Accueil
Photofading of phenylazo-aniline, -pyridone and -quinolone disperse dyes on a nylon 6 substrate in COLORATION TECHNOLOGY, Vol. 125, N° 2 (2009)
