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Published on: June 6, 2012
Anodic Electrodeposition of Chitosan-AgNP Composites Using In Situ Coordination with Copper Ions
Dmitry S Kharitonov1, Aliaksandr A Kasach2, Agnieszka Gibala1,3
1Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland.
Abstract:
Chitosan is an attractive material for biomedical applications. A novel approach for the anodic electrodeposition of chitosan-AgNP composites using in situ coordination with copper ions is proposed in this work. The surface and cross-section morphology of the obtained coating with varying concentrations of AgNPs were evaluated by SEM, and surface functional groups were analyzed with FT-IR spectroscopy. The mechanism of the formation of the coating based on the chelation of Cu(II) ions with chitosan was discussed. The antibacterial activity of the coatings towards Staphylococcus epidermidis ATCC 35984/RP62A bacteria was analyzed using the live-dead approach. The presented results indicate that the obtained chitosan-AgNP-based films possess some limited anti-biofilm-forming properties and exhibit moderate antibacterial efficiency at high AgNP loads.
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