Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys

doi:10.3390/ma13173834

IMR OpenIR

	Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys
	Weng, Wenxian 1; Wu, Weiwei 1; Yu, Xiaoming 2; Sun, Mingyue 1; Lin, Zhensheng 1; Ibrahim, Muhammad 3; Yang, Huazhe 1
通讯作者	Yang, Huazhe(hzyang@cmu.edu.cn)
	2020-09-01
发表期刊	MATERIALS
卷号	13 期号:17 页码:15
摘要	Micro-arc oxidation (MAO) treatment is a simple and effective technique to improve the corrosion resistance for magnesium alloys. However, the presence of micro-pores and cracks on the coatings provides paths for corrosive ions to penetrate into and react with the substrate, limiting the long-term corrosion resistance. In this paper, we designed a composite coating with which GelMA hydrogel coatings with varying thicknesses were prepared on the surface of MAO-coated magnesium alloys via a dip-coating method, aiming to improve the biocorrosion resistance and biocompatibility. The surface morphology, the chemical composition of GelMA hydrogels, and the crystallographic structure of magnesium alloys were characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD), respectively. The corrosion resistance and biocompatibility of all samples were evaluated through electrochemical and biological experiments. The results demonstrated that the addition of GelMA hydrogel could effectively seal the pores and improve the corrosion resistance and biocompatibility of MAO-coated magnesium alloys, especially for the sample with one layer of GelMA hydrogel, showing high cell proliferation rate, and its current density (I-corr) was two orders of magnitude lower than that of the MAO coating. Besides, the balance mechanism between corrosion and protection was proposed. As a result, the GelMA hydrogel coatings are beneficial to the application of MAO-coated magnesium alloys in bone tissue engineering and other fields.
关键词	MAO Mg alloys GelMA hydrogel
资助者	Natural Science Foundation of Liaoning Province of China ; Foundation of the Education Department of Liaoning Province in China ; National Natural Science Foundation of China
DOI	10.3390/ma13173834
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Liaoning Province of China[2020-MS-166] ; Foundation of the Education Department of Liaoning Province in China[QN2019035] ; National Natural Science Foundation of China[81500897]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000569614700001
出版者	MDPI
引用统计	被引频次：21[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/321006/140537
专题	中国科学院金属研究所
通讯作者	Yang, Huazhe
作者单位	1.China Med Univ, Sch Fundamental Sci, Shenyang 110122, Peoples R China 2.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Weng, Wenxian,Wu, Weiwei,Yu, Xiaoming,et al. Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys[J]. MATERIALS,2020,13(17):15.
APA	Weng, Wenxian.,Wu, Weiwei.,Yu, Xiaoming.,Sun, Mingyue.,Lin, Zhensheng.,...&Yang, Huazhe.(2020).Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys.MATERIALS,13(17),15.
MLA	Weng, Wenxian,et al."Effect of GelMA Hydrogel Coatings on Corrosion Resistance and Biocompatibility of MAO-Coated Mg Alloys".MATERIALS 13.17(2020):15.