Phytic acid coatings on magnesium alloy

A new review portrays recent developments of biodegradable phytic acid conversion coatings on magnesium alloy for temporary orthopedic implants.

Medical staff in the operating theatre.
Biofilms on surfaces causes persistent infections and is an issue of considerable concern to healthcare providers. Image source: sasint - Pixabay (symbol image). 

Magnesium (Mg) alloys have been favored by numerous researchers due to their excellent biocompatibility and degradability. Whereas, the rapid corrosion rate cannot guarantee the integrity of temporary repair implant during the healing period, this will lead to surgical failure. Phytic acid (PA), is a non-toxic organic macromolecule, with several active ligands. Depend on the characteristic of easy complexation with metal ions, it has been practiced on the surface of metal implanted materials.

Research progress of PA coating on biological Mg

The PA conversion coating can not only improve the corrosion resistance of the Mg matrix but also possess osteogenic inducement and environmental friendliness. In a recently published paper, the research progress of PA coating on biological Mg alloy in recent decades is reviewed from the structure of PA, influence factors and the strategy of combining with other coatings to improve its deficiency.

The review has been published in Progress in Organic Coatings, Volume 169, August 2022.

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