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Sieving and clogging in PEG-PEGDA hydrogel membranes

dc.contributor.authorEDDINE, Malak Alaa
hal.structure.identifierInstitut Charles Sadron [ICS]
dc.contributor.authorCARVALHO, Alain
hal.structure.identifierInstitut Charles Sadron [ICS]
dc.contributor.authorSCHMUTZ, Marc
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
hal.structure.identifierSciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]
dc.contributor.authorDE CHATEAUNEUF-RANDON, Sixtine
hal.structure.identifierSciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]
dc.contributor.authorBRESSON, Bruno
hal.structure.identifierInstitut de Chimie et des Matériaux Paris-Est [ICMPE]
dc.contributor.authorBELBEKHOUCHE, Sabrina
hal.structure.identifierSciences et Ingénierie de la Matière Molle (UMR 7615) [SIMM]
dc.contributor.authorMONTEUX, Cécile
dc.date.issued2023
dc.identifier.issn0743-7463
dc.description.abstractEnHydrogels are promising systems for separation applications due to their structural characteristics (i.e. hydrophilicity and porosity). In our study, we investigate the permeation of suspensions of rigid latex particles of different sizes through free-standing hydrogel membranes prepared by 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. Atomic force microscopy (AFM) and cryoscanning electron microscopy (cryoSEM) were employed to characterize the structure of the hydrogel membranes. We find that the 20 nm particle permeation depends on both the PEGDA/PEG composition and the pressure applied during filtration. In contrast, we do not measure a significant permeation of the 100 nm and 1 µm particles, despite the presence of large cavities of 1 µm evidenced by cryoSEM images. We suggest that the PEG chains induce local nanoscale defects in the cross-linking of PEGDA-rich walls separating the micron size cavities, that control the permeation of particles and water. Moreover, we discuss the decline of the permeation flux observed in the presence of latex particles, compared to that of pure water. We suggest that a thin layer of particles forms on the surface of the hydrogels.
dc.description.sponsorshipMouvement brownien au voisinage d'interfaces molles
dc.description.sponsorshipCapteur Interférométrique de Contraintes de Surface
dc.description.sponsorshipFrottements dans les systèmes complexes - ANR-21-CE06-0039
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enSieving and clogging in PEG-PEGDA hydrogel membranes
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.langmuir.3c02153
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.identifier.arxiv2309.11807
dc.description.sponsorshipEuropeBrownian Motion near Soft Interfaces
bordeaux.journalLangmuir
bordeaux.page15085
bordeaux.volume39
bordeaux.issue42
bordeaux.peerReviewedoui
hal.identifierhal-04213015
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04213015v1
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