ALAA EDDINE, Malak; BELBEKHOUCHE, S.; DE CHATEAUNEUF-RANDON, Sixtine; SALEZ, Thomas; KOVALENKO, Artem; BRESSON, Bruno; MONTEUX, C.

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ALAA EDDINE, Malak
Sciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]
Institut de Chimie et des Matériaux Paris-Est [ICMPE]

BELBEKHOUCHE, S.
Institut de Chimie et des Matériaux Paris-Est [ICMPE]

DE CHATEAUNEUF-RANDON, Sixtine
Sciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]

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Article de revue

Ce document a été publié dans

Macromolecules. 2022, vol. 55, p. 9841

American Chemical Society

Résumé en anglais

Hydrogels which are hydrophilic and porous materials have recently emerged as promising systems for filtration applications. In our study, we prepare hydrogel membranes by the photopolymerization of a mixture of poly (ethylene glycol) diacrylate (PEGDA) and large poly(ethylene glycol) (PEG) chains of 300 000 g.mol-1 in the presence of a photoinitiator. We find that this addition of free PEG chains induces a large and non-linear increase of the water permeability. Indeed, by changing the content of PEG chains added, we obtain variations of the hydrogel water permeability over two orders of magnitude. The highest water permeability values are obtained for the membranes when the PEG concentration is equal to its critical overlap concentration C*. Moreover, we find that the flow rate of water through the membranes varies non-linearly with the pressure. We relate this result to the deformability of the membranes as the applied pressure leads to a compression of the pores. This study provides new perspectives for the design of flexible hydrogel membranes with controlled permeability and their application in water treatment and bioseparation.< Réduire

Project ANR

Mouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Frottements dans les systèmes complexes

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798