In vitro degradation of biodegradable polymer-coated magnesium under cell culture condition

► Degradation behavior of 4 kinds of polymer-coated Mg under cell culture condition. ► All kinds of polymer coating effectively decreased Mg2+ release. ► SEM and EDX analysis revealed corrosion layer underneath the polymer coating. ► X-ray CT showed corrosion depth of PLLA-coated Mg 3 times smaller than PCL-coated.