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首页> 外文期刊>Materials science & engineering >Antibacterial durability and biocompatibility of antibacterial-passivated 316L stainless steel in simulated physiological environment
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Antibacterial durability and biocompatibility of antibacterial-passivated 316L stainless steel in simulated physiological environment

机译：316L不锈钢在模拟生理环境中的抗菌耐久性和生物相容性

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摘要

Stainless steel (SS) has been widely applied as one of the most efficient implant metal materials, although corrosion and infection in body environment are still challenging. Herein, an antibacterial passivation method was employed to enhance the antibacterial performance and corrosion resistance of the medical 316L SS. The result proved that the antibacterial-passivated 316L SS exhibited stable antibacterial activity and effectively inhibited the formation of bacterial biofilm. Electrochemical measurements combined with X-ray photoelectron spectroscopy technique were used to study the corrosion resistance and semiconductor behavior of passivated 316L SS immersed in simulated physiological environment. The results indicated that the 316L SS after anti-bacterial passivation treatment for 1 h, soaking in the medium for 10 days, showed satisfactory corrosion resistance attributing to proper Cu deposition in the passive film. The anodic stripping voltammetry measurement further confirmed that the Cu-bearing passive film could continuously release Cu ions into medium. The zebrafish test demonstrated an excellent in vivo biocompatibility for the 316L SS with antibacterial passivation for 0.5 and 1 h, respectively. In addition, changes of surface roughness, contact angle and chemical composition after antibacterial passivation played an important role in explaining the antibacterial mechanism, which could be clearly divided into contact killing and ionic release killing. Hence, the antibacterial passivation treatment was preliminarily proved as a potential way for enhancing the persistent antibacterial activity and corrosion resistance of 316L SS.
机译：不锈钢（SS）已被广泛用作最有效的植入金属材料之一，尽管在人体环境中的腐蚀和感染仍然具有挑战性。在本文中，采用抗菌钝化方法来增强医用316L SS的抗菌性能和耐腐蚀性。结果证明，抗菌钝化的316L SS表现出稳定的抗菌活性，并有效地抑制了细菌生物膜的形成。将电化学测量与X射线光电子能谱技术相结合，研究了浸入模拟生理环境中的钝化316L不锈钢的耐腐蚀性和半导体性能。结果表明，经过抗菌钝化处理1 h，在介质中浸泡10天后的316L SS表现出令人满意的耐腐蚀性，这归因于钝化膜中适当的Cu沉积。阳极溶出伏安法的测量进一步证实了含铜钝化膜可以连续释放铜离子到介质中。斑马鱼测试证明了316L SS具有出色的体内生物相容性，且分别具有0.5 h和1 h的抗菌钝化作用。此外，抗菌钝化后表面粗糙度，接触角和化学成分的变化在解释抗菌机理方面也起着重要作用，可以明确地分为接触杀灭和离子释放杀灭。因此，初步证明了抗菌钝化处理是增强316L SS的持久抗菌活性和耐腐蚀性的潜在途径。

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  • 来源
    《Materials science & engineering》 |2019年第7期|396-410|共15页
  • 作者

    Zhao Jinlong; Zhai Zhaofeng; Sun Da; Yang Chunguang; Zhang Xinrui; Huang Nan; Jiang Xin; Yang Ke;

  • 作者单位

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China;

    Wenzhou Univ, Inst Life Sci, Wenzhou 325000, Peoples R China|Wenzhou Med Univ, Sch Nursing, Chinese Amer Res Inst Diabet Complicat, Sch Pharmaceut Sci, Wenzhou 325000, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China|Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Stainless steel; Passive film; Antibacterial passivation treatment; Cu ion; Antibacterial activity;

    机译：不锈钢;钝化膜;抗菌钝化处理;铜离子;抗菌活性;

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