| Titre : |
Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites possessing superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics : application of these nanocomposites to the separation of oil and water |
| Type de document : |
texte imprimé |
| Année de publication : |
2017 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Eau
Filtres
Fluor
Huiles et graisses
Hydrophobie
Matériaux hybrides
Oléophilie
Oléophobie
Oligomères
Papier
Phosphonique, Acide
Séparation (technologie)
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Verre
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Fluoroalkyl end-capped vinyltrimethoxysilane oligomer [RF–(CH2CHSi(OMe)3)n–RF; RF = fluoroalkyl group; n = 2, 3] can undergo the sol–gel reactions in the presence of a variety of phosphonic acid derivatives such as 1-hydroxyethylidene-1,1-diphosphonic acid, nitrilotris(methylene phosphonic acid), and 2-phosphonobutane-1,2,4-tricarboxylic acid under alkaline conditions to provide the corresponding fluorinated oligomeric silica/phosphonic acids nanocomposites. Interestingly, it was demonstrated that the modified glasses and filter papers treated with these obtained fluorinated nanocomposites can exhibit the superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics on their surfaces, respectively. More interestingly, the modified filter papers treated with these nanocomposites were applied to the separation of the mixture of oil and water. |
| Note de contenu : |
- EXPERIMENTAL : Measurements
- MATERIALS : Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites [Rf-(VM-Sio2)n-Rf/PHSP acids] - Preparation of modified glass treated with the Rf-(VM-Sio2)n-Rf/PHSP acids nanocomposites by casting method
- RESULTS AND DISCUSSION : Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites - Surface modification of glasses and filter papers by the use of the Rf-(VM-Sio2)n-Rf/PHSP acids nanocomposites |
| DOI : |
10.1007/s11998-016-9910-5 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9910-5.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29152 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017)
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Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/phosphonic acids nanocomposites possessing superoleophobic/superhydrophilic and superoleophilic/superhydrophobic characteristics : application of these nanocomposites to the separation of oil and water in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
