Titre : |
Surface treatment optimization of pigmentary TiO2 from an industrial aspect |
Type de document : |
texte imprimé |
Auteurs : |
Nika Veronovski, Auteur ; M. Lešnik, Auteur ; Dejan Verhovsek, Auteur |
Année de publication : |
2014 |
Article en page(s) : |
p. 255-264 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Catégories : |
Dioxyde de silicium Dioxyde de titane hydrocolloïdes Microstructures Pigments métalliques Porosité Potentiométrie Revêtements:Peinture Surfaces -- Analyse Traîtements de surface Volumétrie (chimie analytique)
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
Industrial processes are most often limited in the means of production conditions, e.g., chemical agents’ selection and consumption, and time and energy conditions. In the present work, we succeeded in synthesizing a homogeneous silica layer on titanium dioxide (TiO2) core using moderate time and temperature conditions. The structure of the surface coated pigmentary TiO2 was characterized by scanning electron microscopy, transmission electron microscopy, and EDS. In our research isoelectric point (IEP) of TiO2 was determined, which occurred when the solution pH was ~4. In the meantime, the precipitation of SiO2 on TiO2 surface resulted in the shift of IEP. In addition, Fourier transform infrared spectroscopy and Brunauer–Emmett–Teller analysis were applied in order to determine differences in surface microstructure. Coating parameters were optimized to attain desired morphology of precipitated Si-hydroxide, which in turn provides improvements in one or more important performance properties such as hiding power efficiency, which was determined by the means of UV–Vis light transmittance. |
Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Methods
- RESULTS AND DISCUSSION : Potentiometric titration : formation of Si-hydrogel - Surface morphology on untreated ans surface-treated pigmentary TiO2 - Electrochemical properties determination of untreated and surface-treated pigmentary TiO2 - Surface microstructure - Microporosity - Hiding power determination |
DOI : |
10.1007/s11998-013-9553-8 |
En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9553-8.pdf |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21169 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 2 (03/2014) . - p. 255-264