title: Research on super-hydrophobic surface of biodegradable magnesium alloys used for vascular stents.
abstract: Micro-nanometer scale structure of nubby clusters overlay was constructed on the surface of an AZ31 magnesium alloy by a wet chemical method. The super-hydrophobicity was achieved with a water contact angle of 142° and a sliding angle of about 5°. The microstructure and composition of the super-hydrophobic surface were characterized by SEM and FTIR. Potentiodynamic polarization and electrochemical impedance spectroscopy were used to evaluate the corrosion behavior, and the hemocompatibility of the super-hydrophobic surface was investigated by means of hemolytic and platelet adhesion tests. Results showed that the super-hydrophobic treatment could improve the corrosion resistance of magnesium alloys in PBS and inhibit blood platelet adhesion on the surface, which implied excellent hemocompatibility with controlled degradation.
authors.affiliation: Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China. pwan@imr.ac.cn
authors.forename: Peng
authors.initials: P
authors.lastname: Wan
authors.forename: Jingyao
authors.initials: J
authors.lastname: Wu
authors.forename: LiLi
authors.initials: L
authors.lastname: Tan
authors.forename: Bingchun
authors.initials: B
authors.lastname: Zhang
authors.forename: Ke
authors.initials: K
authors.lastname: Yang
mesh_terms: D000497:Alloys; D001672:Biocompatible Materials; D001808:Blood Vessels; D058266:Dielectric Spectroscopy; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008274:Magnesium / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared; D015607:Stents; D013499:Surface Properties; D017155:Wettability
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D008274:Magnesium