In Vitro Corrosion Behavior of Biodegradable Iron Foams with Polymeric Coating

Materials

Lucia Haverová¹  Radka Gorejová¹  František Kaľavský¹  Renáta Oriňaková¹  Andrej Oriňak¹  Zuzana Orságová Králová¹  Matej Baláž²  Karol Kovaľ³  Miroslav Džupon³  Miriam Kupková³  Monika Hrubovčáková³ 

[1] Department of Physical Chemistry, Faculty of Science, Pavol Jozef Šafárik University in Košice, Moyzesova 11, 041 54 Košice, Slovakia;Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01 Košice, Slovakia;Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia;

关键词: iron foam;    polyethyleneimine (pei);    biodegradation;    powder metallurgy;    coating;   

DOI  :  10.3390/ma13010184

来源: DOAJ

【 摘 要 】

Research in the field of biodegradable metallic scaffolds has advanced during the last decades. Resorbable implants based on iron have become an attractive alternative to the temporary devices made of inert metals. Overcoming an insufficient corrosion rate of pure iron, though, still remains a problem. In our work, we have prepared iron foams and coated them with three different concentrations of polyethyleneimine (PEI) to increase their corrosion rates. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX), Fourier-transform infrared spectroscopy (FT-IR), and Raman spectroscopy were used for characterization of the polymer coating. The corrosion behavior of the powder-metallurgically prepared samples was evaluated electrochemically using an anodic polarization method. A 12 weeks long in vitro degradation study in Hanks’ solution at 37 °C was also performed. Surface morphology, corrosion behavior, and degradation rates of the open-cell foams were studied and discussed. The use of PEI coating led to an increase in the corrosion rates of the cellular material. The sample with the highest concentration of PEI film showed the most rapid corrosion in the environment of simulated body fluids.

【 授权许可】

Unknown