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发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0300944022004301

论文类型：期刊论文

发表时间：2022-08-31

发表刊物：Progress in Organic Coatings

收录刊物：SCI

卷号：172

ISSN号：0300-9440

关键字：Magnesium alloy, Dicalcium phosphate dehydrate, Polycaprolactone, Composite coating, Biocompatibility

摘要：As a new implantable biomaterial, magnesium (Mg) alloy has a broad application prospect. However, it is urgent to solve the disadvantage of rapid degradation. In this work, a composite coating with flaky dicalcium phosphate dihydrate (DCPD) as the bottom layer and polycaprolactone (PCL) incorporated with titania (TiO2) as the sealing layer was synthesized by electrodeposition and spin coating. Due to the sealing effect of the PCL layer and the blocking effect of TiO2 nanoparticles on the corrosive solution, the corrosion resistance of the composite coating sample is significantly improved, and its impedance could reach 628 times that of Mg alloy, and the total hydrogen evolution amount of the composite coating is only 1/19 of that of Mg alloy after immersion for 14 days. Besides, the addition of TiO2 not only further improved the biocompatibility of the sample, but also endowed it with excellent bacteriostasis, which was expected to meet the standard of clinical implantation.

DOI码：10.1016/j.porgcoat.2022.107133

影响因子：7.3