Corrosion resistance evaluation of biodegradable magnesium alloy vascular stents optimized by mechanical adapted polymer coating strategy
文献类型：期刊论文
| 作者 | Shi, Liqian1,3; Chen, Shanshan1; Zheng, Feng1; Liu, Mingming2; Yang, Hui1; Zhang, Bingchun1 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2023-02-05 |
| 卷号 | 658页码:9 |
| ISSN号 | 0927-7757 |
| 关键词 | Magnesium alloy Cardiovascular stent Mechanical adaptability Corrosion resistance Biodegradable polymer |
| DOI | 10.1016/j.colsurfa.2022.130664 |
| 通讯作者 | Chen, Shanshan(sschen@imr.ac.cn) |
| 英文摘要 | Surface modification coating of magnesium alloy stents as a physical barrier is to inhibit the corrosive medium from contact with matrix. In view of the complex deformation behavior of stent, mechanical adopted polymer coating strategy was considered in our work. Here, a relatively high plasticity polymer-poly(butyl acrylate) (PBA) was applied as the outer protective layer on the surface of magnesium alloy discs and stents through a dip -coating method and ultrasonic spraying system respectively. Compared with low plasticity poly(d,L-lactide) (PDLLA) control group, mechanical property of PBA polymer film were detected, furthermore, the static corrosion behaviors of PBA/MgF2 flake samples were investigated by electrochemical and immersion tests for a period time. The morphologies and degradation behaviors of stents after grip-expansion were conducted to explore the mechanical adaptability of PBA/MgF2 coating with magnesium alloy stent. PBA/MgF2 composite coating could improve the corrosion resistance of both static and deformed magnesium alloys, exhibiting a long-term protection. Especially, PBA-coated stent maintained the structural integrity and a relatively smooth surface after 21 days of service. Therefore, it is inferred that a coating material with high elongation at break is more mechanical adaptability with stent deformation to reduce the degradation rate of magnesium alloy stents. |
| 资助项目 | National Natural Science Foundation of China[51901227] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2019194] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000918776600003 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| 源URL | [http://ir.imr.ac.cn/handle/321006/175341]  |
| 专题 | 金属研究所_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.Shenyang Univ, Normal Coll, Shenyang 110044, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Liqian,Chen, Shanshan,Zheng, Feng,et al. Corrosion resistance evaluation of biodegradable magnesium alloy vascular stents optimized by mechanical adapted polymer coating strategy[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2023,658:9. |
| APA | Shi, Liqian,Chen, Shanshan,Zheng, Feng,Liu, Mingming,Yang, Hui,&Zhang, Bingchun.(2023).Corrosion resistance evaluation of biodegradable magnesium alloy vascular stents optimized by mechanical adapted polymer coating strategy.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,658,9. |
| MLA | Shi, Liqian,et al."Corrosion resistance evaluation of biodegradable magnesium alloy vascular stents optimized by mechanical adapted polymer coating strategy".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 658(2023):9. |
入库方式： OAI收割
来源：金属研究所
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