Park, Min Lee, Ji Eun Park, Chun Gwon Lee, Seung Ho Seok, Hyun Kwang Choy, Young Bin 2024-01-20T11:33:01Z 2024-01-20T11:33:01Z 2022-01-25 2013-09 1547-0091 https://pubs.kist.re.kr/handle/201004/127682 Controlled corrosion of magnesium is critical for its clinical application to orthopedic devices. For this purpose, we coated the surface of Mg with a biodegradable polymer, polycaprolactone (PCL) and attempted to control the Mg corrosion with varied coating thicknesses in a reproducible manner. As we increased the coating thickness from 0 to 13.31 +/- A 0.36 mu m, the volume of hydrogen gas and amount of Mg ions, the indicators of Mg corrosion, decreased by almost half from 0.57 mL/cm(2)/day and 0.55 mg/day to 0.20 mL/cm(2)/day and 0.26 mg/day, respectively. However, the elemental compositions on the surface revealed possible detachment of polymer coating and rapid water absorption at the early stage of corrosion for all coating thicknesses. Therefore, the lessons learned from this study suggest pre-treatment of the Mg surface for better polymer-metal adhesion, as well as preparation of the coating with lowered porosity as a stronger water-permeation barrier, to eventually allow precise control on Mg corrosion. English Federation of Societies for Coatings Technology Polycaprolactone coating with varying thicknesses for controlled corrosion of magnesium Article 10.1007/s11998-013-9474-6 1 Journal of Coatings Technology and Research, v.10, no.5, pp.695 - 706 Journal of Coatings Technology and Research 10 5 695 706 N scie scopus 000324136800011 2-s2.0-84884280775 Chemistry, Applied Materials Science, Coatings & Films Chemistry Materials Science Article IN-VITRO BIODEGRADATION BEHAVIOR PURE MAGNESIUM ALLOY DEGRADATION RESISTANCE IMPLANTS DEVICES Biodegradability Corrosion Coating Magnesium Polycaprolactone