标題: One-step electrodeposition of Janus chitosan coating for metallic implants with anti-corrosion properties

作者: Jian, YH (Jian, Yinghao); Yang, C (Yang, Chen); Zhang, JX (Zhang, Jingxian); Qi, LH (Qi, Luhe); Shi, XW (Shi, Xiaowen); Deng, HB (Deng, Hongbing); Du, YM (Du, Yumin)

來源出版物: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 卷: 641 文獻号: 128498 DOI: 10.1016/j.colsurfa.2022.128498 出版年: MAY 20 2022

摘要: Hydrophilic-hydrophobic Janus chitosan coating was facilely fabricated by one-step electrodeposition in HCl/ ethanol solvent. The face of chitosan coating attached to the electrode demonstrates a compact structure while the other face away from the electrode demonstrates a porous structure, which endows the chitosan coating asymmetric wettability. The concentration of ethanol has a profound effect on the structure and wettability of the chitosan coating and pioneer work on the corrosion resistance of the chitosan coating on metallic implants was carried out. The growth kinetics of the Janus chitosan coating reveals that the coating grows faster and contains more pores in the presence of ethanol. The anticorrosion properties of the Janus chitosan coating were investigated on common metal implants titanium and 316 L stainless steel. The results show that the Janus chitosan coating obtained with 10 wt% ethanol electrolyte has the best anti-corrosion ability due to its compactness and hydrophobic surface. The corrosion rates of the Janus chitosan coating were reduced to 3.94 x 10(-4) mm/yr and 1.77 x 10(-2) mm/yr, respectively, significantly improved as comparison to the bare metal corrosion rates (1.46 x 10(-3) mm/yr for bare titanium and 3.00 x 10(-1) mm/yr for bare stainless steel). The present work provides a simple way to prepare Janus chitosan coating and demonstrates its great potential in implant anticorrosion.

作者關鍵詞: Janus material; Chitosan; Coating; Anti-corrosion; Implants

地址: [Jian, Yinghao; Yang, Chen; Zhang, Jingxian; Qi, Luhe; Shi, Xiaowen; Deng, Hongbing; Du, Yumin] Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Int Sci & Techn, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

通訊作者地址: Shi, XW (通訊作者)，Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Int Sci & Techn, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

電子郵件地址: shixw@whu.edu.cn

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