Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation

doi:10.1007/s11998-024-01017-z

IMR OpenIR

	Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation
	Liu, Dexiao 1,2; Ma, Jing 1; Yang, Hui 3; Yang, Ke 1; Chen, Shanshan 1
通讯作者	Chen, Shanshan(sschen@imr.ac.cn)
	2024-11-11
发表期刊	JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
ISSN	1547-0091
页码	16
摘要	Biodegradable magnesium alloy vascular stents need to undergo complex deformation (crimping and expanding) in the body during implantation, which puts forward higher requirements for the protective coating material on stents. In this study, a drug-carrying polymer with larger elongation at break, poly(D,L-lactide-co-epsilon-caprolactone) (PLCL), was used as a new protective coating for AZ31 magnesium alloy stents to improve the corrosion resistance of the stents with deformations. PLCL coating was prepared on the surface of HF-treated AZ31 block samples by dip coating method to study the corrosion resistance of the alloy without deformation, while the conventional poly(D,L-lactide) (PDLLA) was used as a control. Through electrochemical and immersion tests, it was found that AZ31 samples with PLCL coating exhibited superior corrosion resistance. AZ31 stents with two different coatings prepared by ultrasonic spraying were crimped, expanded and immersed. The surface morphology and degradation behavior of the stents after the above deformation showed that the PLCL coating presented better mechanical adaptability to the stents with deformation, with reduced degradation rate, and especially, the pitting corrosion was inhibited. Meanwhile, the PLCL coating endowed great biocompatibility, which can be a promising protective coating for biodegradable magnesium alloy stents.
关键词	Biodegradable magnesium alloy Vascular stent Polymer coating Deformation Biocompatibility
DOI	10.1007/s11998-024-01017-z
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Applied ; Materials Science, Coatings & Films
WOS记录号	WOS:001352557700001
出版者	SPRINGER
引用统计	被引频次：1[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/321006/191424
专题	中国科学院金属研究所
通讯作者	Chen, Shanshan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Zhongke Yian Med Technol Beijing Co LTD, 2 Xiang St, Zone B, Airport Dev Tone, Shunyi Dist, Beijing 101318, Peoples R China
推荐引用方式 GB/T 7714	Liu, Dexiao,Ma, Jing,Yang, Hui,et al. Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation[J]. JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,2024:16.
APA	Liu, Dexiao,Ma, Jing,Yang, Hui,Yang, Ke,&Chen, Shanshan.(2024).Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation.JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH,16.
MLA	Liu, Dexiao,et al."Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation".JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH (2024):16.