| Titre : |
A novel 1,8-naphthalimide green fluorescent dye and its corresponding intrinsically fluorescent polyurethane latexes |
| Type de document : |
texte imprimé |
| Auteurs : |
Qingjun Jin, Auteur ; Yang Hu, Auteur ; Jie Shen, Auteur ; Botian Li, Auteur ; Ghengyou Kan, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 571-582 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Colorants
Fluorescence
Latex
Polyuréthanes
Solidité de la couleur
Vert
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A novel green fluorescent dye, 4-hexylamino-N-(2-hydroxy-1-hydroxymethylethyl)-1,8-naphthalimide (AHHNA), was designed and synthesized, and then used as a chain extender to prepare a series of intrinsically green fluorescent polyurethane (PU) latexes. The chemical structure of AHHNA and the properties of the fluorescent PU latexes and their films were characterized. It was found that the UV–Vis and the fluorescent spectra of the PUs remained fairly consistent with AHHNA, and the fluorescence emitting capacity of 1,8-naphthalimide group was enhanced by covalently bonding AHHNA onto the PU chain. The amount of AHHNA used in the latex preparation had no obvious effect on the latex colloid properties including particle size, poly index, and zeta potential. Results showed that the color difference (?E) and the extraction rate (Re) of the intrinsically fluorescent PU latex film were 5.72% and 3.1%, respectively, while the ?E and Re of the extrinsically fluorescent PU latex film were 8.31% and 84.7%, respectively, indicating that the light fastness and the solvent fastness of the intrinsically fluorescent PU latex film were much better than those of the extrinsically fluorescent PU latex film. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of the fluorescent dyes - Preparation of the intrinsically fluorescent PU-AHHNA latexes - PU latex film preparation - Characterization
- RESULTS AND DISCUSSION : Synthesis and characterization of the fluorescent dyes - Spectral properties of the fluorescent dye AHHNA - UV irradiation stability of the fluorescent dye AHHNA - PU-AHHNA latexes and their colloidal properties - FTIR analysis of PU-AHHNA prepolymer and latex films - Spectral properties of the intrinsically fluorescent PU-AHHNA - Influence of temperature on fluorescent intensity - Stability of the fluorescent PU-AHHNA latexes - Fluorescent spectral of the PU-AHHNA latex film - Light fastness of the fluorescent PU latex films - Solvent fastness of the fluorescent PU latex films |
| DOI : |
10.1007/s11998-016-9874-5 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9874-5.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28566 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 3 (05/2017) . - p. 571-582
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