Corrosion Behavior, Antioxidation Property, Antibacterial Ability, and Osteogenic Activity of Zn / Chitosan-Catechol Coating Prepared on NiTi Alloy

IF 4.2 2区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Sinica-English Letters Pub Date : 2025-09-26 DOI:10.1007/s40195-025-01922-1

Shuaiwu Peng, Zejun Chen, Runhua Yao, Sen Pei, Ruiqiang Hang, Yonghua Sun, Xiaohong Yao, Ying Lu

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引用次数: 0

Abstract

NiTi alloy has been widely used as orthopedic implant materials due to its unique shape memory properties and superelasticity. However, implantation failure often occurs because of the poor antibacterial ability, antioxidation property and corrosion resistance of the NiTi alloy. In order to overcome the above problems, we constructed Zn/ polydopamine (PDA)/Chitosan-Catechol (CS-C) composite coating on the surface of NiTi alloy in this paper. The surface morphology and wettability of the coating were characterized by scanning electron microscopy (SEM) and optical contact angle measuring instrument, respectively. The results showed that the Zn/ CS-C coating was successfully prepared, and exhibited good hydrophilic property, especially the sample Zn/PDA/CS-C-24 h. In addition, the corrosion resistance, antioxidation property and biological properties of the coating were systematically analyzed. The results indicated that the Zn/PDA/CS-C composite coating exhibited good corrosion resistance and antibacterial property, antioxidant property and osteogenic activity, especially sample Zn/PDA/CS-C-24 h. The sample Zn/PDA/CS-C-24 h could effectively protect osteoblasts from reactive oxygen species (ROS) damage and promote cell proliferation and osteoblast differentiation. This study provides a feasible and effective strategy for the surface modification of orthopedic implant.

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NiTi合金表面Zn /壳聚糖-儿茶酚涂层的腐蚀行为、抗氧化性能、抗菌性能及成骨活性

NiTi合金以其独特的形状记忆性能和超弹性被广泛应用于骨科植入材料。然而，由于NiTi合金的抗菌能力、抗氧化性能和耐腐蚀性较差，植入失败的情况时有发生。为了克服上述问题，本文在NiTi合金表面构建了Zn/聚多巴胺(PDA)/壳聚糖-儿茶酚（CS-C）复合涂层。利用扫描电子显微镜（SEM）和光学接触角测量仪对涂层的表面形貌和润湿性进行了表征。结果表明：成功制备了Zn/ CS-C涂层，并表现出良好的亲水性，特别是样品Zn/PDA/CS-C-24 h。此外，对涂层的耐蚀性、抗氧化性和生物性能进行了系统的分析。结果表明，Zn/PDA/CS-C复合涂层具有良好的耐蚀性、抗菌性、抗氧化性和成骨活性，特别是Zn/PDA/CS-C-24 h样品能有效保护成骨细胞免受活性氧（ROS）损伤，促进细胞增殖和成骨细胞分化。本研究为骨科种植体的表面修饰提供了一种可行有效的策略。

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来源期刊

Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

6.60

自引率

14.30%

发文量

122

审稿时长

2 months

期刊介绍： This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.