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Polyélectrolytes associatifs: Synthèse, Caractérisation, Propriétés en Ecoulement et Application pétrolière

Abstract : The studies presented in literature show that monografted Hydrophobically Modified Polymers (HMP) present in water original rheological properties. To improve the rheological properties of these systems, we played on the nature of grafting by particularly considering bigrafted HPE by mixing of short (C4) and long alkyl chains (C12). To clarify the respective effect of each graft on their associative properties, we decided to work on a model system where the degree of polymerization and distribution of the main chain are identical whatever the grafting method, i.e. mono and bigrafted. Our choice was focused on the chemical modification of poly (acrylic acid), a work of synthesis and characterization was carried out: classical and assisted-microwaves chemical modification, new 1H NMR elucidation of microstructure, Automatic continuous mixing technique for macromolecular dimension.... The rheological results show a unexpected improvement of the viscosifying effect as function of polymer concentration, composition, shear rate, salinity and temperature. In perspective, an overview of the potentialities of HPE (structures undisclosed) in Enhanced Oil Recovery is presented.
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Contributor : Sabrina Paillet <>
Submitted on : Thursday, September 24, 2009 - 6:58:31 PM
Last modification on : Friday, January 15, 2021 - 9:24:49 AM
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  • HAL Id : tel-00419736, version 1



Sabrina Paillet. Polyélectrolytes associatifs: Synthèse, Caractérisation, Propriétés en Ecoulement et Application pétrolière. Matériaux. Université de Pau et des Pays de l'Adour, 2009. Français. ⟨tel-00419736⟩



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