标题：Biocorrosion resistance and biocompatibility of Mg-Al layered double hydroxide/poly(L-lactic acid) hybrid coating on magnesium alloy AZ31
作者：Sun X.; Yao Q.-S.; Li Y.-C.; Zhang F.; Zeng R.-C.; Zou Y.-H.; Li S.-Q.
作者机构：[Sun, X] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 更多[Sun, X] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;[ Yao, Q.-S] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;[ Li, Y.-C] School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252059, China;[ Zhang, F] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;[ Zeng, R.-C] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China;[ Zou, Y.-H] College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;[ Li, S.-Q] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China 收起 通讯作者：Zhang, F(zhangfen2011@hotmail.com)
通讯作者地址：[Zhang, F] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Corrosi 更多[Zhang, F] Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and TechnologyChina; 收起 来源：Frontiers of Materials Science
出版年：2020
DOI：10.1007/s11706-020-0522-8
关键词：biocompatibility; corrosion resistance; layered double hydroxide; magnesium alloy; poly(L-lactic acid)
摘要：A Mg-Al layered double hydroxide (Mg-Al-LDH) coating was firstly synthesized via an in-situ steam coating growth method on the AZ31 Mg alloy, and then was modified with poly(L-lactic acid) (PLLA) via dipping and vacuum freeze-drying. The microstructure and composition of LDH/PLLA hybrid coating were analyzed by XRD, SEM, EDS and FT-IR. The biocorrosion behavior of hybrid coating was evaluated by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and hydrogen evolution test in the Hank’s solution. The results showed that LDH/PLLA coatings exhibited a much dense layer compared to the unmodified Mg-Al-LDH coating with unobvious boundary between PLLA and LDH coatings. The corrosion current density of the LDH/PLLA-10 hybrid coating decreased three orders of magnitude in comparison to its substrate. It was proven that the existence of the PLLA coating further prolonged the service life of the Mg-Al-LDH coating. What’s more, the MTT assay and live/dead staining showed that the LDH/PLLA-10 coating had good biocompatibility for Mouse NIH3T3 fibroblasts. The formation mechanism and the anti-corrosion mechanism of hybrid coatings were proposed. © 2020, Higher Education Press.
收录类别：SCOPUS
资源类型：期刊论文
原文链接：https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091732078&doi=10.1007%2fs11706-020-0522-8&partnerID=40&md5=2e481a14bd28d193963c262392365608
