title: Improvement of the adsorption of quaternary ammonium on polypropylene affinity membrane through the control of its surface properties.
abstract: Polypropylene fiber meshes were plasma-treated in order to attach new chemical functions corresponding to acidic or basic groups without altering the roughness of such thin material. An almost complete wettability of these plasma-treated materials is obtained. Because of the plasma-grafting of acid or amino moieties, such surface treatment allows increasing the adsorption rate of quaternary ammonium molecule like Aliquat 336. This increase was explained by specific interactions of ammonium head of the Aliquat 336 and hydrophilic group of plasma-treated PP, followed by the adsorption of a further layer of Aliquat 336 through hydrophobic interactions of its hydrocarbon chain. These interactions between the carrier and the polymeric surface were characterized leading to physisorption mechanism. Such new material could be applied to the extraction process since no evidence of aging was given.
authors.affiliation: Laboratoire de Physique Chimie Moléculaire et Macromoléculaire, Université Saad Dahleb de Blida, route Soumaa, BP 270 Blida, Algérie; LUNAM Université, UMR Université du Maine - CNRS n° 6283, Institut des Molécules et Matériaux du Mans - Département Polymères, Colloïdes et Interfaces, Avenue Olivier Messiaen, 72085 Le Mans Cedex, France.
authors.forename: Naima
authors.initials: N
authors.lastname: Hachache
authors.affiliation: Laboratoire de Physique Chimie Moléculaire et Macromoléculaire, Université Saad Dahleb de Blida, route Soumaa, BP 270 Blida, Algérie.
authors.forename: Youcef
authors.initials: Y
authors.lastname: Bal
authors.affiliation: LUNAM Université, UMR Université du Maine - CNRS n° 6283, Institut des Molécules et Matériaux du Mans - Département Polymères, Colloïdes et Interfaces, Avenue Olivier Messiaen, 72085 Le Mans Cedex, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Debarnot
authors.affiliation: LUNAM Université, UMR Université du Maine - CNRS n° 6283, Institut des Molécules et Matériaux du Mans - Département Polymères, Colloïdes et Interfaces, Avenue Olivier Messiaen, 72085 Le Mans Cedex, France. Electronic address: fabienne.poncin-epaillard@univ-lemans.fr.
authors.forename: Fabienne
authors.initials: F
authors.lastname: Poncin-Epaillard
mesh_terms: D000327:Adsorption; D004867:Equipment Design; D008422:Materials Testing; D008567:Membranes, Artificial; D011126:Polypropylenes / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D013499:Surface Properties; D014462:Ultrafiltration / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D011126:Polypropylenes; D000644:Quaternary Ammonium Compounds
keywords: Adsorption; Fiber; Membrane; Plasma; Polypropylene; Quaternary ammonium