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镁合金表面功能化需要获得具有良好耐蚀性和抗菌性的表面。基于壳聚糖与聚谷氨酸之间的静电吸附作用,利用层层组装方法在镁合金AZ31表面获得一种既耐蚀又抗菌的涂层。利用高分辨扫描电子显微镜、傅里叶红外光谱仪以及电化学测试对这种功能涂层进行了表面形貌、化学成分以及耐蚀性能表征。通过平板计数法评定该涂层耐金黄葡萄球菌的性能。结果表明,该涂层具有良好的耐蚀性与抗菌性。
Functionalization of magnesium alloy surfaces requires obtaining a surface that has good corrosion and antibacterial properties. Based on the electrostatic adsorption between chitosan and polyglutamic acid, an anti-corrosion and antibacterial coating was obtained on AZ31 magnesium alloy by layer-by-layer assembly. The functional coatings were characterized by surface morphology, chemical composition and corrosion resistance using high resolution scanning electron microscopy, Fourier transform infrared spectroscopy and electrochemical tests. The coating was evaluated for its resistance to Staphylococcus aureus by plate counting. The results show that the coating has good corrosion resistance and antibacterial properties.