Functional biohybrid materials synthesized via surface-initiated MADIX/RAFT polymerization from renewable natural wood fiber: Grafting of polymer as non leaching preservative |
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Authors: | Damien Tastet Maud Save Fatima Charrier Jean-Bernard Ledeuil Jean-Charles Dupin Laurent Billon |
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Affiliation: | a IPREM, UMR 5254, CNRS, Université de Pau et des Pays de L’Adour, Technopole Helioparc, 2 Avenue P. Angot, 64053 Pau Cedex 9, France b Equipe de Physique et Chimie des Polymères (EPCP), IPREM, CNRS, UPPA, 64053, France c Sylvadour, IUT des Pays de l’Adour, Université de Pau et des Pays de L’Adour, 40 004 Mont de Marsan Cedex, France d Equipe de Chimie Physique (ECP), IPREM, CNRS, UPPA, France |
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Abstract: | Crude wood fibers represent a wide class of renewable resources. The surface modification of such materials via covalent grafting of polymer offers new surface properties with non-leaching coating. The grafting of the polymer chains was achieved by surface-initiated controlled radical polymerization through a grafted xanthate chain transfer agent. Macromolecular design via interchange of xanthate (MADIX) technique was chosen to graft poly(vinyl acetate), polystyrene, poly(n-butyl acrylate) and poly(4-vinylbenzyl chloride)-polystyrene amphiphilic cationic copolymers. Water contact angle measurements highlighted the hydrophobization of the wood fiber surface with a nanoscaled polymer monolayer indicating the appropriate coverage of the fiber. X-ray photoelectron spectroscopy showed the successful grafting of the polymer after drastic washing procedure. The quaternization of the grafted polystyrene-co-poly(4-vinyl benzyl chloride) copolymers with tertiary amine allows the introduction of biocide quaternary ammonium functions while preserving the hydrophobic character of the modified wood fiber when introducing a long alkyl chain in the statistical copolymer. Finally, the cationic copolymer was subjected to Coniophora Puteana to evaluate its propensity to limit the fungi expansion. |
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Keywords: | Controlled radical polymerization Wood fibers Surface modification |
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