Poly(4-vinylaniline)-Polyaniline Bilayer-Modified Stainless Steels for the Mitigation of Biocorrosion by Sulfate-Reducing Bacteria (SRB) in Seawater
| Autor: | Simo O. Pehkonen, Bin Liang, Li Lv, Shengwei Tang, Shaojun Yuan, Cleo Choong |
|---|---|
| Přispěvatelé: | School of Materials Science & Engineering |
| Rok vydání: | 2012 |
| Předmět: |
Atom-transfer radical-polymerization
General Chemical Engineering Bilayer Metallurgy Sulfonyl halide General Chemistry Electrochemistry Industrial and Manufacturing Engineering Engineering::Materials [DRNTU] chemistry.chemical_compound Aniline chemistry Polymerization Chemical engineering Trichlorosilane Polyaniline |
| Zdroj: | Industrial & Engineering Chemistry Research. 51:14738-14751 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie302303x |
| Popis: | A novel strategy by combination of surface-initiated atom transfer radical polymerization (ATRP) and in situ chemical oxidative graft polymerization was employed to tether stainless steel (SS) with poly(4-vinylaniline)-polyaniline (PVAn-PANI) bilayer coatings for mitigating biocorrosion by sulfate-reducing bacteria (SRB) in seawater. A trichlorosilane coupling agent was first immobilized on the SS surfaces to provide sulfonyl halide groups for surface-initiated ATRP of 4-VAn. A subsequent grafting of PANI onto the PVAn-grafted surface was accomplished by in situ chemical oxidative graft polymerization of aniline. The PVAn-PANI bilayer coatings were finally quaternized by hexylbromide to generate biocidal functionality. The so-synthesized SS surface was found to significantly reduce bacterial adhesion and biofilm formation. Electrochemical results revealed that the PVAn-PANI modified SS surface exhibited high resistance to biocorrosion by SRB. With the inherent anticorrosion capability and antibacterial properties of quaternized PVAn-PANI bilayers, the functionalized SS substrates are potentially useful to steel-based equipment under harsh marine environments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|