溶胶-凝胶法制备不锈钢基Ag-SiO2抗菌膜及其结构性能表征

Preparation and characterization of antibacterial Ag-SiO2 films on stainless steel by sol-gel method

  • 摘要: 采用溶胶-凝胶法和浸渍提拉法在不锈钢板上制备了含银的二氧化硅薄膜.利用X射线衍射仪(XRD)分析了膜层的组成,通过测试接触角研究了薄膜的亲水性,测试了薄膜对质量分数10%的FeCl3溶液的耐腐蚀性能,并对覆膜不锈钢的抗菌性和附着性进行了测定.结果表明:采用溶胶-凝胶法可在不锈钢基板上制得含银的SiO2抗菌膜,经过10min氧化处理和5次提拉,并经热处理后,抗菌膜与不锈钢结合牢固,亲水性和耐蚀性提高,对金黄色葡萄球菌抑菌率达到100%.

     

    Abstract: A Ag-SiO2 film was prepared on a stainless steel surface using sol-gel method and soak-lifting method. The structure of the film was studied by X-ray diffraction analysis, the hydrophilicity was characterized by measuring the contact angle, the corrosion resistance was determined in a 10% FeCl3 solution, and the adhesion properties and antibacterial performance were tested. It is shown that the antibacterial Ag-SiO2 film can be obtained on the stainless steel by sol-gel method. After oxidization for 10 min and five times dip-coating, as well as heat treatment, the film is firmly bonded with the stainless steel. The hydrophilicity and corrosion resistance of the film are improved, and the inhibitory rate to Staphylococcus aureus reaches up to 100%.

     

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