Zwitterionic molecule layer for inhibiting microbial corrosion of copper alloy
Abstract
Purpose
For mitigating biocorrosion induced by sulfate-reducing bacteria (SRB) in seawater, the zwitterionic molecule layer (ZML) of poly (sulfobetaine methacrylate) is grafted onto B10 surface by chemical vapor deposition and surface-initiated atom transfer radical polymerization.
Design/methodology/approach
Energy-dispersive spectroscopy-attenuated total reflectance Fourier transform infrared spectroscopy and static contact angle measurements are used to characterize the as-formed layer.
Findings
After surface modification, B10 can significantly reduce SRB adhesion, demonstrating the good antifouling property. Further, the biocorrosion inhibition is investigated by potentiodynamic polarization and electrochemical impedance spectroscopy, indicating that ZML exhibits high resistance to biocorrosion with inhibition efficiency of approximately 90 per cent.
Originality/value
ZML performs a dual feature, i.e. antifouling film and corrosion inhibitor, for the biocorrosion inhibition.
Keywords
Acknowledgements
This work was supported by Foundation of Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences (MCKF201605) and 973 Program (2014CB643305).
Citation
Xu, F., Qiu, Z., Qiu, R., Yang, J. and Lin, C. (2018), "Zwitterionic molecule layer for inhibiting microbial corrosion of copper alloy", Anti-Corrosion Methods and Materials, Vol. 65 No. 1, pp. 46-52. https://doi.org/10.1108/ACMM-12-2016-1744
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited