Plasma-Engineered Polymer Thin Films with Embedded Nanosilver for Prevention of Microbial Adhesion

Abstract : The present project is focused on the plasma-deposition of thin films (~150 nm) containing silver nanoparticles embedded in a polymeric matrix, to prevent microbial adhesion to stainless steel. The process originality relies on a dual strategy associating silver target sputtering and plasma polymerization in argon-hexamethyldisiloxane (HMDSO) plasma, using an asymmetrical RF discharge (13.56 MHz). The physico-chemical properties of the obtained films were investigated by transmission FTIR and XPS. To determine the anti-adhesive efficiency, detachment experiments were performed in a shear stress flow chamber with silver-containing and silver-free deposits. The maximal detachment efficiency was achieved with the polymeric matrix alone. Silver antimicrobial effect is assumed to be related to Ag+ ion progressive release from the embedded particles into the surrounding medium. This release was confirmed by ICP-MS measurements. Furthermore, film biocide activity was observed for silver-containing film.
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https://hal-agroparistech.archives-ouvertes.fr/hal-01563934
Contributeur : Claire Saulou-Bérion <>
Soumis le : mardi 18 juillet 2017 - 13:02:04
Dernière modification le : mardi 11 septembre 2018 - 15:19:05

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Claire Saulou, Bernard Despax, Patrice Raynaud, Sandrine Zanna, Philippe Marcus, et al.. Plasma-Engineered Polymer Thin Films with Embedded Nanosilver for Prevention of Microbial Adhesion. Solid State Phenomena, 2009, 151, pp.95 - 100. 〈10.4028/www.scientific.net/SSP.151.95〉. 〈hal-01563934〉

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