Titre : |
Stability of TiO2 aqueous dispersions |
Type de document : |
texte imprimé |
Auteurs : |
V. P. Zubov, Auteur ; I. F. Kuz'kina, Auteur ; I. I. Ivankova, Auteur ; O. J. Schmitz, Auteur |
Année de publication : |
1998 |
Article en page(s) : |
p. 856-858 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Tags : |
'Peinture eau' 'Pigment minéral' 'Titane Oxyde' 'Dispersion aqueuse Stabilité TiO2 |
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
Stabilization of aqueous dispersions of a rutile titanium dioxide pigment (TiO2) by water-soluble non-ionic polymers and combinations of these polymers with ionic polymers or with anionic surfactants was studied. The data on the sedimentation behaviour of TiO2 dispersions in aqueous solutions shows that poly (vinyl methyl acetamide) (PVMA), poly (i-propyl acrylamide) (PiPAA) slightly increase dispersion stability at the early stages and then flocculation of pigment occurs. Complementary data on the dispersion stabilization with polymers obtained when studying accumulation of the dispersion sediment onto the cup of a torsion balance are shown. From those data effective particle radii were calculated. It was shown that in the presence of poly (vinylcaprolactame) (PVCL) the effective particle radius i.e. degree of agglomeration is considerably decreased that means stabilization of the dispersion. |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11155 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 11/98 (11/1998) . - p. 856-858