Please use this identifier to cite or link to this item: https://doi.org/10.1002/bit.22252
Title: Grafting of antibacterial polymers on stainless steel via surface-initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans
Authors: Yuan, S.J. 
Xu, F.J. 
Pehkonen, S.O.
Ting, Y.P. 
Neoh, K.G. 
Kang, E.T. 
Keywords: ATRP
Biocorrosion
DMAEMA
Quaternization
Stainless steel
Issue Date: 1-Jun-2009
Source: Yuan, S.J., Xu, F.J., Pehkonen, S.O., Ting, Y.P., Neoh, K.G., Kang, E.T. (2009-06-01). Grafting of antibacterial polymers on stainless steel via surface-initiated atom transfer radical polymerization for inhibiting biocorrosion by Desulfovibrio desulfuricans. Biotechnology and Bioengineering 103 (2) : 268-281. ScholarBank@NUS Repository. https://doi.org/10.1002/bit.22252
Abstract: To enhance the biocorrosion resistance of stainless steel (SS) and to impart its surface with bactericidal function for inhibiting bacterial adhesion and biofilm formation, well-defined functional polymer brushes were grafted via surface-initiated atom transfer radical polymerization (ATRP) from SS substrates. The trichlorosilane coupling agent, containing the alkyl halide ATRP initiator, was first immobilized on the hydroxylated SS (SS-OH) substrates for surface-initiated ATRP of (2-dimethylamino) ethyl methacrylate (DMAEMA). The tertiary amino groups of covalently immobilized DMAEMA polymer or P(DMAEMA), brushes on the SS substrates were quaternized with benzyl halide to produce the biocidal functionality. Alternatively, covalent coupling of viologen moieties to the tertiary amino groups of P(DMAEMA) brushes on the SS surface resulted in an increase in surface concentration of quaternary ammonium groups, accompanied by substantially enhanced antibacterial and anticorrosion capabilities against Desulfovibrio desulfuricans in anaerobic seawater, as revealed by antibacterial assay and electrochemical studies. With the inherent advantages of high corrosion resistance of SS, and the good antibacterial and anticorrosion capabilities of the viologen-quaternized P(DMAEMA) brushes, the functionalized SS is potentially useful in harsh seawater environments and for desalination plants. © 2009 Wiley Periodicals, Inc.
Source Title: Biotechnology and Bioengineering
URI: http://scholarbank.nus.edu.sg/handle/10635/63988
ISSN: 00063592
DOI: 10.1002/bit.22252
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