Influence of albumin interaction on corrosion resistance of sintered iron biomaterials with polyethyleneimine coating
| Autor: | Zuzana Orságová Králová, Radka Gorejová, Michal Oriňak, František Kaľavský, Renáta Oriňáková, Matej Baláž, Monika Hrubovčáková, Zdenka Bujňáková, Andrej Oriňák, Nikolas Király, Miriam Kupková, Mária Kaňuchová, Ivan Shepa, Alexandra Kovalčíková, Jana Hovancová, Magdaléna Strečková |
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| Rok vydání: | 2020 |
| Předmět: |
General Physics and Astronomy
macromolecular substances 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Corrosion Metal Adsorption Carbonyl iron Coating Powder metallurgy Pitting corrosion Bovine serum albumin biology Chemistry technology industry and agriculture Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Chemical engineering visual_art visual_art.visual_art_medium biology.protein engineering 0210 nano-technology |
| Zdroj: | Applied Surface Science. 509:145379 |
| ISSN: | 0169-4332 |
| Popis: | Bioresorbable biomaterials are expected to degrade or to be resorbed within the body at an appropriate degradation rate rather than removing the implant after fulfilling its function. Adsorption of proteins on the metal surface and its subsequent detachment can affect the degradation mechanism and induce health complications. The iron samples were produced from carbonyl iron powder by powder metallurgy and coated by thin layer of polyethyleneimine (PEI). The effect of both PEI coating and bovine serum albumin (BSA) interaction on corrosion resistance of iron biomaterials in Hanks’ solution was investigated. Adsorption of BSA onto Fe + PEI was more rapid in comparison to adsorption onto bare Fe due to the electrostatic nature of BSA adsorption to polymeric layer. The corrosion behavior of sintered samples in Hanks’ solution without and with protein was investigated. Alteration of degradation mechanism was observed in the presence of PEI and/or BSA. PEI was observed to avoid the pitting corrosion while presence of BSA resulted in surface-induced complexation. The extensive pitting with high extent of metal release was observed in the presence of PEI and BSA. The additional spectroscopic and microscopic methods were used to prove the suggested alteration of corrosion mechanism. |
| Databáze: | OpenAIRE |
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