Reference : A green and refillable antibacterial coating for stainless steel
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/69326
A green and refillable antibacterial coating for stainless steel
English
Faure, Emilie [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Charlot, Aurélia [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Sciannaméa, Valérie [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Lenoir, Sandrine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Christine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Van de Weerdt, Cécile [University of Liège (ULg) > Département des sciences de la vie > Centre of Biomedical Integrative Genoproteomics, Laboratoire de Biologie Moléculaire et de Génie Génétique > >]
Martial, Joseph mailto [University of Liège (ULg) > Département des sciences de la vie > Centre of Biomedical Integrative Genoproteomics, Laboratoire de Biologie Moléculaire et de Génie Génétique > >]
Archambeau, Catherine [Arcelor Mittal, Liège, Belgium > > > >]
Willet, Nicolas mailto [University of Liège (ULg) > Department of Chemistry > Nanochemistry and Molecular Systems > >]
Duwez, Anne-Sophie mailto [University of Liège (ULg) > Department of Chemistry > Nanochemistry and Molecular Systems > >]
Detrembleur, Christophe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
29-Jun-2010
No
No
International
Coatings Science International (COSi)
28/06/2010 - 2/07/2010
Noordwijk
The Netherlands
[en] coating ; antimicrobial polymer
[en] Because of its resistance to corrosion and chemicals, relevant mechanical and esthetical properties, stainless steel (SS) is widely used in the daily life (food industry, household appliances, surgery …). However, SS is unable to prevent bacteria from adhering, proliferating and forming a resistant biofilm when ageing. Therefore, surface modification is needed for providing durable antibacterial properties.
We report here on an all-in-one approach to prepare refillable antimicrobial films using the layer-by-layer deposition of polyelectrolytes. Specifically designed biocidal multilayered polyelectrolyte films that bear 3,4-dihydroxyphenylalanine (DOPA), known as a promoter of adhesion to inorganic surfaces, were deposited onto SS. DOPA was incorporated in the polycationic chains by radical copolymerisation of N-methacrylated DOPA with the quaternary ammonium salt of 2-(dimethylamino)ethyl methacrylate (DMAEMA+). In order to boost the antibacterial activity of the polycationic layer, AgNO3 was added to the aqueous solution of P(DOPA)-co-P(DMAEMA+), which resulted in the in-situ formation of silver based nanoparticles, sources of biocial Ag+. The layer-by-layer deposition of aqueous P(DOPA)-co-P(DMAEMA+)/AgCl/Ag0 suspension and aqueous solution of poly(styrene sulfonate) provides high antibacterial activity against Gram-negative E. Coli bacteria. Moreover, after silver depletion, films retain some antimicrobial activity, thanks to ammonium groups of the copolymer. We also show that the antibacterial activity of the films can then be easily re-boosted.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Arcelor Mittal ; The "Région Wallonne" in the frame of the "BIOCOAT" program
Researchers
http://hdl.handle.net/2268/69326
This poster was presented by Emilie Faure

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