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Románszki L, Datsenko I, May Z, Telegdi J, Nyikos L, Sand W. Polystyrene films as barrier layers for corrosion protection of copper and copper alloys. Bioelectrochemistry 2013; 97:7-14. [PMID: 24239277 DOI: 10.1016/j.bioelechem.2013.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 08/06/2013] [Accepted: 10/04/2013] [Indexed: 10/26/2022]
Abstract
Dip-coated polystyrene layers of sub-micrometre thickness (85-500nm) have been applied on copper and copper alloys (aluminium brass, copper-nickel 70/30), as well as on stainless steel 304, and produced an effective barrier against corrosion and adhesion of corrosion-relevant microorganisms. According to the dynamic wettability measurements, the coatings exhibited high advancing (103°), receding (79°) and equilibrium (87°) contact angles, low contact angle hysteresis (6°) and surface free energy (31mJ/m(2)). The corrosion rate of copper-nickel 70/30 alloy samples in 3.5% NaCl was as low as 3.2μm/a (44% of that of the uncoated samples), and in artificial seawater was only 0.9μm/a (29% of that of the uncoated samples). Cell adhesion was studied by fluorescence microscopy, using monoculture of Desulfovibrio alaskensis. The coatings not only decreased the corrosion rate but also markedly reduced the number of bacterial cells adhered to the coated surfaces. The PS coating on copper gave the best result, 2×10(3)cells/cm(2) (1% of that of the uncoated control).
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Affiliation(s)
- Loránd Románszki
- Department of Interfaces and Surface Modification, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67., 1025 Budapest, Hungary.
| | - Iaryna Datsenko
- Aquatic Biotechnology, Biofilm Centre, Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141 Essen, Germany.
| | - Zoltán May
- Department of Functional and Structural Materials, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67., 1025 Budapest, Hungary.
| | - Judit Telegdi
- Department of Interfaces and Surface Modification, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67., 1025 Budapest, Hungary; Institute of Media Technology and Light Industry, Faculty of Light Industry and Environmental Engineering, Óbuda University, Doberdó u. 6., 1034 Budapest, Hungary.
| | - Lajos Nyikos
- Department of Interfaces and Surface Modification, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67., 1025 Budapest, Hungary.
| | - Wolfgang Sand
- Aquatic Biotechnology, Biofilm Centre, Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141 Essen, Germany.
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