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

IMR OpenIR

	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; Guan, Shao-Kang 5; Liu, Qing-Yun 3
通讯作者	Zeng, Rong-Chang(rczeng@foxmail.com) ; Liu, Qing-Yun(qyliu@sdust.edu.cn)
	2019-12-01
发表期刊	MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
ISSN	0928-4931
卷号	105 页码:13
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.
关键词	Biomaterials Potentiodynamic polarisation curves Amino acids Magnesium Degradation
资助者	National Natural Science Foundation of China ; SDUST Research Fund
DOI	10.1016/j.msec.2019.110042
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51571134] ; SDUST Research Fund[2014TDJH104]
WOS研究方向	Materials Science
WOS类目	Materials Science, Biomaterials
WOS记录号	WOS:000490044700056
出版者	ELSEVIER
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/135764
专题	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.