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Electrochemical, atomic force microscopy and infrared reflection absorption spectroscopy studies of pre-formed mussel adhesive protein films on carbon steel for corrosion protection
YKI – Ytkemiska institutet.
2012 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 520, no 24, 7136-7143 p.Article in journal (Refereed)
Abstract [en]

Electrochemical measurements, in situ and ex situ atomic force microscopy (AFM) experiments and infrared reflection absorption spectroscopy (IRAS) analysis were performed to investigate the formation and stability as well as corrosion protection properties of mussel adhesive protein (Mefp-1) films on carbon steel, and the influence of cross-linking by NaIO 4 oxidation. The in situ AFM measurements show flake-like adsorbed protein aggregates in the film formed at pH 9. The ex situ AFM images indicate multilayer-like films and that the film becomes more compact and stable in NaCl solution after the cross-linking. The IRAS results reveal the absorption bands of Mefp-1 on carbon steel before and after NaIO 4 induced oxidation of the pre-adsorbed protein. Within a short exposure time, a certain corrosion protection effect was noted for the pre-formed Mefp-1 film in 0.1 M NaCl solution. Cross-linking the pre-adsorbed film by NaIO 4 oxidation significantly enhanced the protection efficiency by up to 80%.

Place, publisher, year, edition, pages
2012. Vol. 520, no 24, 7136-7143 p.
Keyword [en]
Electrochemical, atomic force microscopy and infrared reflection absorption spectroscopy studies of pre-formed mussel adhesive protein films on carbon steel for corrosion protection Adsorption, Chemical analysis, Corrosion protection, Cross-linking, Films, In situ AFM, Mussel adhesive protein
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27531DOI: 10.1016/j.tsf.2012.07.115OAI: oai:DiVA.org:ri-27531DiVA: diva2:1054536
Note
A3056Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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