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逐层组装的聚丙烯酸多层膜诱导的镁合金AZ31钙磷涂层的耐腐蚀性。

corrosion resistance of layer-by-layer assembled polyacrylic acid multilayers induced Ca-P coating on magnesium alloy AZ31.

作者信息

Cui Lan-Yue, Cheng Shen-Cong, Liang Lu-Xian, Zhang Jing-Chao, Li Shuo-Qi, Wang Zhen-Lin, Zeng Rong-Chang

机构信息

College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.

College of Materials Science and Engineering, Chongqing University of Technology, Chongqing, 400065, China.

出版信息

Bioact Mater. 2020 Feb 10;5(1):153-163. doi: 10.1016/j.bioactmat.2020.02.001. eCollection 2020 Mar.

DOI:10.1016/j.bioactmat.2020.02.001
PMID:32083229
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7016252/
Abstract

Biodegradable magnesium (Mg)-based alloys have aroused great concern owing to their promising characteristics as temporary implants for orthopedic application. But their undesirably rapid corrosion rate under physiological conditions has limited the actual clinical application. This study reports the use of a novel biomimetic polyelectrolyte multilayer template, based on polyvinylpyrrolidone (PVP) and polyacrylic acid (PAA) via layer-by-layer (LbL) assembly, to improve the corrosion resistance of the alloy. Surface characterization techniques (field-emission scanning electron microscopy, Fourier transform infrared (FTIR) spectrophotometer and X-ray diffractometer) confirmed the formation of biomineralized Ca-P coating on AZ31 alloy. Both hydrogen evolution and electrochemical corrosion tests demonstrated that the corrosion protection of the polyelectrolyte-induced Ca-P coating on AZ31 alloy. The formation mechanism of biomineralized Ca-P coating was proposed.

摘要

可生物降解的镁基合金因其作为骨科临时植入物的优良特性而备受关注。但其在生理条件下过快的腐蚀速率限制了实际临床应用。本研究报道了一种基于聚乙烯吡咯烷酮（PVP）和聚丙烯酸（PAA）通过层层（LbL）组装的新型仿生聚电解质多层模板，用于提高合金的耐腐蚀性。表面表征技术（场发射扫描电子显微镜、傅里叶变换红外（FTIR）光谱仪和X射线衍射仪）证实了AZ31合金上形成了生物矿化的钙磷涂层。析氢和电化学腐蚀试验均表明，聚电解质诱导的钙磷涂层对AZ31合金具有腐蚀防护作用。提出了生物矿化钙磷涂层的形成机理。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/709b17587703/gr12.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/e9466e0b5723/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/db88faecaa5d/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/424ed58c765e/gr5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/8d6d8b816384/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/a52c4beb1e43/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/e590d63be1a6/gr11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/709b17587703/gr12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/b7f083cc895f/fx1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/35417f334e39/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/c607bc66f99c/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/e9466e0b5723/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/db88faecaa5d/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/424ed58c765e/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/4eca674cec69/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/1751564e71ef/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/4914a888015e/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/8d6d8b816384/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/a52c4beb1e43/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/e590d63be1a6/gr11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fc60/7016252/709b17587703/gr12.jpg

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