Kannan, M. Bobby (2015) Biodegradable polymeric coatings for surface modification of magnesium-based biomaterials. In: Sankara Narayanan, T.S.N., Park, Il-Song, and Lee, Min-Ho, (eds.) Surface Modification of Magnesium and its Alloys for Biomedical Applications, Volume II: modification and coating techniques. Woodhead Publishing Series in Biomaterials, 90 . Elsevier, Cambridge, UK, pp. 355-376.

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Abstract

Magnesium, a light-weight engineering metal, is a potential biomaterial for orthopaedic biodegradable mini-implant applications due to its compatible mechanical properties, biodegradability and biocompatibility. However, magnesium-based implants will become a reality only if the degradation rate of magnesium is controlled. Alloying has shown to reduce the degradation rate of magnesium to some degree, but magnesium alloys are highly susceptible to localized degradation, which can affect the mechanical integrity during service. In orthopaedic applications, mechanical integrity of the implant is a key factor to be considered, especially during the initial service period. Hence, surface modification techniques to delay the general and localized degradation behaviour of magnesium-based materials have gained increased interest in recent years. This chapter reviews the use of biodegradable polymers as coating materials on magnesium-based materials for enhancing the general and localized degradation resistance.

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