In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids

doi:10.1016/j.msec.2019.110042

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	In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids
	Wang, Yu 1; Ding, Bao-Hua 1; Gao, Shi-Yu 1; Chen, Xiao-Bo 2; Zeng, Rong-Chang 1,5; Cui, Lan-Yue 1; Li, Shu-Juan 1; Li, Shuo-Qi 1; Zou, Yu-Hong 3; Han, En-Hou 4
刊名	MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
	2019-12-01
卷号	105 页码:13
关键词	Biomaterials Potentiodynamic polarisation curves Amino acids Magnesium Degradation
ISSN号	0928-4931
DOI	10.1016/j.msec.2019.110042
通讯作者	Zeng, Rong-Chang(rczeng@foxmail.com) ; Liu, Qing-Yun(qyliu@sdust.edu.cn)
英文摘要	Influences of proteins on degradation of magnesium alloys are of great significance but not well understood. In particular the roles of amino acids, the basic unit of proteins in regulating the progress of biodegradation of magnesium based materials remain unclear. This study aims to investigate the impacts of alanine, glutamic acid and lysine on degradation of pure magnesium in phosphate buffer solution through SEM, XPS, FTIR, potentio-dynamic polarisation curves, electrochemical impedance spectroscopy and immersion tests. The changed contents of amino acids in solutions were detected by UV-vis spectrophotometer. Results demonstrate that the charges of the selected amino acids imposed significant contribution to suppressing the degradation of pure magnesium in phosphate buffer solution. The presence of amino acids led to the formation of phosphate-based corrosion products, increasing free corrosion potential, and reduction in corrosion current density and solution pH depending on their isoelectric points and molecular structures. A plausible corrosion mechanism organised by amino acids on pure magnesium was proposed.
资助项目	National Natural Science Foundation of China[51571134] ; SDUST Research Fund[2014TDJH104]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000490044700056
资助机构	National Natural Science Foundation of China ; SDUST Research Fund
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/135763]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zeng, Rong-Chang; Liu, Qing-Yun
作者单位	1.Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China 2.RMIT Univ, Sch Engn, Carlton, Vic 3053, Australia 3.Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Shandong, Peoples R China 4.Chinese Acad Sci, Natl Engn Ctr Corros Control, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 5.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450002, Henan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yu,Ding, Bao-Hua,Gao, Shi-Yu,et al. In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids[J]. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,2019,105:13.
APA	Wang, Yu.,Ding, Bao-Hua.,Gao, Shi-Yu.,Chen, Xiao-Bo.,Zeng, Rong-Chang.,...&Liu, Qing-Yun.(2019).In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids.MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,105,13.
MLA	Wang, Yu,et al."In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids".MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS 105(2019):13.