Study of the tribocorrosion behaviors of albumin on a cobalt-based alloy using scanning Kelvin probe force microscopy and atomic force microscopy
| Autor: | Lijie Qiao, Hongjuan Yang, Yu Yan, Yanjing Su |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Kelvin probe force microscope
Materials science biology Tribocorrosion Nanotechnology 02 engineering and technology Tribology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Corrosion lcsh:Chemistry Adsorption lcsh:Industrial electrochemistry lcsh:QD1-999 Chemical engineering Microscopy Electrochemistry biology.protein Bovine serum albumin 0210 nano-technology lcsh:TP250-261 Protein adsorption |
| Zdroj: | Electrochemistry Communications, Vol 64, Iss, Pp 61-64 (2016) |
| ISSN: | 1388-2481 |
| Popis: | Once biomaterials are implanted in patients, the first reaction that occurs on the surface is the adsorption of biomolecules such as proteins, amino acids, etc. For load-bearing surfaces, some adsorbed proteins can be removed by relative motion (tribology) and some adsorbed proteins can be denatured due to tribochemical reactions. Although the effect of proteins on the corrosion behaviors of metals has been studied, the local reaction induced by the protein adsorption under tribological contact at the micro level is still unknown. The adsorption of bovine serum albumin (BSA) on CoCrMo alloy surfaces and the tribocorrosion behaviors were studied by AFM and SKPFM. The results showed that adsorbed BSA molecules could decrease the work function and promote the corrosion process for CoCrMo alloys. In the wear track, the albumin denatured, and changed the surface potential as time progressed. Keywords: Protein adsorption, Corrosion, Tribology, AFM, SKPFM |
| Databáze: | OpenAIRE |
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