| Titre : |
Compatibilization of titanium dioxide powders with non-polar media : Adsoption of anionic surfactants and its influence on dispersion stability |
| Type de document : |
texte imprimé |
| Auteurs : |
Martin Arellano, Auteur ; Irene Michel-Haciski, Auteur ; Ica Manas-Zloczower, Auteur ; Donald L. Feke, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 103-112 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Absorption
Anions
Dioxyde de titane
Dispersions et suspensions
Pigments inorganiques
Revêtements
Surfactants
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The effect of the adsorption of an anionic surfactant (aerosol OT, sodium dodecyl sulfate, sodium dodecyl sulfonate, or sodium dodecyl benzene sulfonate) on the dispersion behavior of some types of titanium dioxide pigments has been studied. Surfactant adsorption isotherms and the kinetics of the adsorption process were linked using a full Langmuir model. Sedimentation experiments were used to assess the dispersibility of the powders in two nonpolar dispersion media (nonane and cyclohexane). Surfactant-modified powders were found to be more dispersible than the untreated powders in these nonpolar media. Experiments were also performed to assess the stability of the surfactant coating to elevated temperatures and exposure to organic solvents. |
| Note de contenu : |
- METHODS : Determination of the PZC - Aqueous TiO2 suspension stability - Surfactant adsorption - Preparation of surfactant-coated titania powders - Stability of the titania powders in non-polar media - Partitioning of the Titania powders between polar and non-polar phases - Stability of the surfactant coating at elevated temperatures - Surfactant desorption
- RESULTS AND DISCUSSION : Point of zero charge and suspension stability for as-received powders - Surfactant adsorption |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18365 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 857 (06/1996) . - p. 103-112
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Compatibilization of titanium dioxide powders with non-polar media : Adsoption of anionic surfactants and its influence on dispersion stability in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 857 (06/1996)
