Synthesis, characterisation, and applications of isoindigo/Pechmann dye heteroanalogue hybrid dyes on polyester fabric / Tarek Aysha in COLORATION TECHNOLOGY, Vol. 131, N° 4 (08/2015)  

[article]  inCOLORATION TECHNOLOGY > Vol. 131, N° 4 (08/2015) . - p. 333-341 Titre : Synthesis, characterisation, and applications of isoindigo/Pechmann dye heteroanalogue hybrid dyes on polyester fabric Type de document : texte imprimé Auteurs : Tarek Aysha, Auteur ; Mervat El-Sedik, Auteur ; Hamada M. Mashaly, Auteur ; Morsy A. El-Apasery, Auteur ; OldÅ™ich Machalický, Auteur ; Radim Hrdina, Auteur Année de publication : 2015 Article en page(s) : p. 333-341 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bains de teinture -- Analyse Caractérisation Colorants -- Synthèse Fibres polyesters Résistance au lavage Solidité de la couleur Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A series of new dyes based on the N-analogue of Pechmann hybrid dyes were prepared by the condensation of different 5-aryl derivatives of pyrrolinone ester (phenyl, 4-bromophenyl, thienyl, and biphenyl) with isatin. N-Alkylated derivatives were also prepared using bromoethyl acetate. Full 1H and 13C NMR assignment was performed. All prepared dyes were soluble in most organic solvents: N-alkylated derivatives had better solubility than non-alkylated derivatives. The UV-vis absorption spectra of the derivatives under study are quite similar and exhibit maxima in the 509–526 nm range. No E/Z photoisomerisation is observed. The dyeing process, dye exhaustion on polyester, and the fastness properties of the dyes were examined. Note de contenu : - EXPERIMENTAL : Materials and equipment - Synthesis and analytics - Dyeing process at 130°C and calculation of percentage dyebath exhaustion - Colour fastness to washing - Colour fastness to rubbing - Dry crocking test - Wet crocking test - Colour fastness to perspiration - Colour fastness to light - RESULTS AND DISCUSSION : Synthesis - NMR spectroscopy - UV-vis absorption spectra - Dyeing and percentage dyebath exhaustion DOI : 10.1111/cote.12161 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12161 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24434 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17353	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Synthesis, photophysical properties, and application of optical brighteners based on stilbene-oxadiazole derivatives / Mervat El-Sedik in COLORATION TECHNOLOGY, Vol. 133, N° 2 (04/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 2 (04/2017) . - p. 122-127 Titre : Synthesis, photophysical properties, and application of optical brighteners based on stilbene-oxadiazole derivatives Type de document : texte imprimé Auteurs : Mervat El-Sedik, Auteur ; Tarek Aysha, Auteur ; Yehya A. Youssef, Auteur Année de publication : 2017 Article en page(s) : p. 122-127 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Azurants optiques Chimie textile Composés organiques -- Synthèse Polyamide 6 Polyesters Textiles et tissus synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A series of symmetrical optical brighteners based on stilbene-oxadiazole derivatives were prepared by the simple synthetic route of a condensation reaction between 4,4?-dicarboxystilbene and N,N?-carbonyldiimidazole reagent, forming stilbene 4,4?-ethene-1,2-diyldibenzohydrazide as a key intermediate. The obtained compounds were characterised by analysis of nuclear magnetic resonance, mass spectrometry, and elemental analysis data. The absorption maximum wavelength, fluorescence emission wavelength, and fluorescence quantum yield were measured in N,N-dimethylformamide solution at room temperature, and the fluorescence properties of the prepared compounds in the solid state were observed and measured. The compounds exhibited bluish and greenish fluorescence emission, with the fluorescence quantum yield in the range 0.2–0.8; the effects of substituents on the emission spectra of these compounds were interpreted. The prepared compounds were applied as optical brighteners to polyester and polyamide-6 fabrics at various concentrations, and their CIE whiteness index and fastness properties were studied. Note de contenu : - EXPERIMENTAL : Materials - Equipment - Synthesis - FWA application procedure - RESULTS AND DISCUSSION : Synthesis - The absorption and fluorescence properties - The application properties DOI : 10.1111/cote.12258 En ligne : https://drive.google.com/file/d/1WxpLozF2mqTAtX8UuSNMKhPzWMuDFATz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28225 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18801	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)