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Polymer - functionalized nanoparticles for improving waterflood sweep efficiency / R. Ponnapati in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13030-13036 Titre : Polymer - functionalized nanoparticles for improving waterflood sweep efficiency : characterization and transport properties Type de document : texte imprimé Auteurs : R. Ponnapati, Auteur ; O. Karazincir, Auteur ; E. Dao, Auteur Année de publication : 2012 Article en page(s) : pp. 13030-13036 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Transport  properties  Nanoparticle Résumé : Water-dispersible polymer―silica nanocomposite particles, SiO2―ethylene oxide-based polymer nanoparticles hybrids, were synthesized using a "grafting-from" method, where polymer brushes were grown on silica nanoparticles using living radical polymerization. Water-soluble polymer chains were grown from initiator-tethered 15-nm silica nanopartides with ∼600 chains grafted per nanopartide, resulting in a surface grafting of∼1 chain per square nanometer. The single-phase and multiphase transport properties of low concentration brine dispersions of these polymer nanoparticles hybrids through a Berea sandstone core were measured. Experiments show that, while the viscosity increase is modest for dispersions with concentrations of 0.5― 2 wt % of the nanopartide hybrid, the dispersions were able to transport without hindrance through the porous media and, furthermore, were found to be effective at mobilizing waterflood residual oil. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267460 [article] Polymer - functionalized nanoparticles for improving waterflood sweep efficiency : characterization and transport properties [texte imprimé] / R. Ponnapati, Auteur ; O. Karazincir, Auteur ; E. Dao, Auteur . - 2012 . - pp. 13030-13036. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13030-13036 Mots-clés : Transport  properties  Nanoparticle Résumé : Water-dispersible polymer―silica nanocomposite particles, SiO2―ethylene oxide-based polymer nanoparticles hybrids, were synthesized using a "grafting-from" method, where polymer brushes were grown on silica nanoparticles using living radical polymerization. Water-soluble polymer chains were grown from initiator-tethered 15-nm silica nanopartides with ∼600 chains grafted per nanopartide, resulting in a surface grafting of∼1 chain per square nanometer. The single-phase and multiphase transport properties of low concentration brine dispersions of these polymer nanoparticles hybrids through a Berea sandstone core were measured. Experiments show that, while the viscosity increase is modest for dispersions with concentrations of 0.5― 2 wt % of the nanopartide hybrid, the dispersions were able to transport without hindrance through the porous media and, furthermore, were found to be effective at mobilizing waterflood residual oil. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267460