Styrene N-vinylpyrrolidone metal-nanocomposites as antibacterial coatings against Sulfate Reducing Bacteria

• Published in: Materials Science & Engineering C 2013-10, Vol.33 (7), p.4063-4070
• Main Authors: Fathy, M., Badawi, A., Mazrouaa, A.M., Mansour, N.A., Ghazy, E.A., Elsabee, M.Z.
• Format: Article
• Language: English
• Subjects: Anti-Bacterial Agents - pharmacology; Bacteria - drug effects; Biocidal activity; Chromatography, Gel; Coated Materials, Biocompatible - pharmacology; Corrosion; Magnetic Resonance Spectroscopy; Metals - pharmacology; Microbial Sensitivity Tests; Molecular Weight; Nanocomposite; Nanocomposites - chemistry; Nanocomposites - ultrastructure; Nanometal oxide; Oxidation-Reduction - drug effects; Particle Size; Pyrrolidinones - chemistry; Pyrrolidinones - pharmacology; Spectroscopy, Fourier Transform Infrared; SRB; Styrene - chemistry; Styrene - pharmacology; Styrene/vinylpyrrolidone copolymer; Sulfates - metabolism; Surface Properties; Thermogravimetry
• ISSN: 0928-4931; 1873-0191
• DOI: 10.1016/j.msec.2013.05.048

Copolymer of styrene, and vinylpyrrolidone was prepared by various techniques. Different nanometals and nanometal oxides were added into the copolymer as antimicrobial agents against Sulfate Reducing Bacteria (SRB). The nanocomposite chemical structure was confirmed by using FTIR, 1H NMR spectroscopy and thermogravimetric analysis (TGA). The biocidal action of these nanocomposites against the SRB was detected using sulfide determination method in Postgate medium B. The data indicated that the nanocomposites had an inhibitory effect on the growth of SRB and reduced the bacterial corrosion rate of mild steel coupons. The prepared nanocomposites have high inhibition efficiency when applied as coatings and show less efficiency when applied as solids or solution into SRB medium. The copolymer and its nanocomposites effectively reduced the total corrosion rate as determined by total weight loss method. [Display omitted] •Styrene/vinylpyrrolidone copolymer was synthesized by Pickering emulsion technique.•Metal nanocomposites were prepared from the copolymer and nanometal oxides.•Antimicrobial activity of copolymer/metal nanocomposites against SRB was evaluated.•The inhibition efficiency increases with metal concentration.•The prepared nanocomposites have high inhibition efficiency when applied as coatings.