Antibacterial inorganic-organic hybrid coatings on stainless steel via consecutive surface-initiated atom transfer radical polymerization for biocorrosion prevention.
To enhance the corrosion resistance of stainless steel (SS) and to impart its surface with antibacterial functionality for inhibiting biofilm formation and biocorrosion, well-defined inorganic-organic hybrid coatings, consisting of a polysilsesquioxane inner layer and quaternized poly(2-(dimethyamino)ethyl methacrylate) (P(DMAEMA)) outer blocks, were prepared via successive surface-initiated atom transfer radical polymerization (ATRP) of 3-(trimethoxysilyl)propyl methacrylate (TMSPMA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA). The cross-linked P(TMASPMA), or polysilsesquioxane, inner layer provided a durable and resistant coating to electrolytes. The pendant tertiary amino groups of the P(DMAEMA) outer block were quaternized with alkyl halide to produce a high concentration of quaternary ammonium groups with biocidal functionality. The so-synthesized inorganic-organic hybrid coatings on the SS substrates exhibited good anticorrosion and antibacterial effects and inhibited biocorrosion induced by sulfate-reducing bacteria (SRB) in seawater media, as revealed by antibacterial assay and electrochemical analyses, and they are potentially useful to steel-based equipment under harsh industrial and marine environments.
Yuan
S J
SJ
College of Chemical Engineering, Sichuan University, Chengdu 610065, China.
Pehkonen
S O
SO
Ting
Y P
YP
Neoh
K G
KG
Kang
E T
ET
D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D003343:Corrosion; D045285:Desulfovibrio desulfuricans / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D004563:Electrochemistry; D055772:Green Chemistry Technology; D006219:Halogens / Q000737:chemistry; D006868:Hydrolysis; D009930:Organic Chemicals / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry; D013193:Stainless Steel / Q000737:chemistry* / Q000494:pharmacology*; D013499:Surface Properties
D000900:Anti-Bacterial Agents; D006219:Halogens; D009930:Organic Chemicals; D011108:Polymers; D012821:Silanes; D013193:Stainless Steel