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Study on a new prospective coating for improving corrosion resistance of magnesium alloy stents with deformation
Liu, Dexiao1,2; Ma, Jing1; Yang, Hui3; Yang, Ke1; Chen, Shanshan1
通讯作者Chen, Shanshan(sschen@imr.ac.cn)
2024-11-11
发表期刊JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
ISSN1547-0091
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
DOI10.1007/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
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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.
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