| Titre : |
Effect of process conditions on the properties of surface-modified organic pigments encapsulated by UV-curable resins |
| Type de document : |
texte imprimé |
| Auteurs : |
Osama Abdel Hakeim, Auteur ; A. A. Arafa, Auteur ; M. K. Zahran, Auteur ; L. A. W. Abdou, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 44-58 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Dispersions et suspensions
Encapsulation
Miniémulsions
Monomères
Pigments organiques
Polymères -- Effet du rayonnement ultraviolet
Traîtements de surface
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Aqueous dispersions of nanoscale organic pigments were successfully prepared via ball milling and ultrasonication. The dispersed organic pigments were encapsulated into UV-curable resins via a mini-emulsion technique. Critical factors that affected the dispersion and encapsulation stability were investigated. The encapsulated organic pigments were characterised with transmission electron microscopy, thermogravimetric analyses, Fourier Transform-infrared spectra and zeta potential. The results clarified that the type of dispersing agent plays an important role in achieving maximal dispersion stability. Encapsulated organic pigments showed greater dispersion stability, and better wettability than the original pigments. Polyester tetra-acrylate oligomer can stabilise the mini-emulsion from diffusion degradation and inhibit phase separation with time. 1,6-Hexandiol dimethacrylate was the monomer of choice for ink-jet printing inks. Furthermore, it was found that monomer/oligomer and pigment/resin ratios were more influential and needed to be optimised. Thermal analysis, ultracentrifuge sedimentation and morphologies provided supporting evidence for the encapsulation of organic pigments into UV-curable resins. |
| Note de contenu : |
- METHODS : Preparation of nanoscale organic pigment dispersions
- PREPARATION OF NANOPIGMENT DISPERSIONS : Effect of dispersing agent type - Effect of dispersing agent concentration
- ENCAPSULATION OF ORGANIC PIGMENT INTO UV-RESINS : Effect of encapsulation on pigment morphology and size distribution - Effect of encapsulation on dispersion stability - Effect of monomer type on encapsulation stability - Effect of monomer/oligomer ratio on encapsulation stability - Effect of pigment/resin ratio on encapsulation stability
- CHARACTERISATION OF ENCAPSULATED PIGMENTS |
| DOI : |
10.1111/cote.12318 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12318 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30126 |
in COLORATION TECHNOLOGY > Vol. 134, N° 1 (02/2018) . - p. 44-58
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