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Ti3Zr2Sn3Mo25Nb醫(yī)用鈦合金表面載銀復(fù)合抗菌涂層的制備及其抗菌性能
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更新時(shí)間：2015-09-13
采用陽極氧化在醫(yī)用β鈦合金Ti3Zr2Sn3Mo25Nb表面制備TiO2納米管預(yù)涂層，然后通過AgNO3溶液浸泡和紫外光照射處理實(shí)現(xiàn)銀顆粒在預(yù)涂層上的固定，再在含銀電解液中經(jīng)過微弧氧化處理制備出載銀多孔涂層。利用SEM、EDS對(duì)涂層表面形貌、元素構(gòu)成和載銀量進(jìn)行表征，并通過金黃葡萄球菌評(píng)價(jià)涂層的抗菌性能。
Ti3Zr2Sn3Mo25Nb醫(yī)用鈦合金表面載銀復(fù)合抗菌涂層的制備及其抗菌性能Preparation and antibacterial properties of Ag-loaded antimicrobial coatings on Ti3Zr2Sn3Mo25Nb alloy
采用陽極氧化在醫(yī)用β鈦合金Ti3Zr2Sn3Mo25Nb表面制備TiO2納米管預(yù)涂層，然后通過AgNO3溶液浸泡和紫外光照射處理實(shí)現(xiàn)銀顆粒在預(yù)涂層上的固定，再在含銀電解液中經(jīng)過微弧氧化處理制備出載銀多孔涂層。利用SEM、EDS對(duì)涂層表面形貌、元素構(gòu)成和載銀量進(jìn)行表征，并通過金黃葡萄球菌評(píng)價(jià)涂層的抗菌性能。結(jié)果表明：通過陽極氧化和微弧氧化兩步電化學(xué)處理可以在Ti3Zr2Sn3Mo25Nb合金表面制備出含銀量較高的多孔涂層，且銀多為小于100nm的熔融狀顆粒。當(dāng)載銀涂層與金黃葡萄球菌接觸1 d后，平均殺菌率達(dá)到96.94%，7 d后抑菌率仍可達(dá)71.27%。
The pre-coatings were prepared on Ti3Zr2Sn3Mo25Nb alloy by anodic oxidation, and then soaked in the AgNO3?solution followed by UV irradiation treatment, after micro-arc oxidation treatment the Ag-loaded composite coatings were prepared finally. The surface topography of the Ag-loaded coatings, the element characteristics and the amount of Ag loading in the coatings were characterized by SEM and EDS. And the Staphylococcus aureus was used to evaluate the antibacterial activity of the coatings. The results show that the coatings prepared by two- step electrochemical method contain a high amount of silver, and most of silver is present as molten particles with the size less than 100 nm. In vitro antibacterial activity tests indicate that the composite coating incorporated with silver has efficient antibiotic ability. 96.94% of the Saphylococcus aureus are killed in the first day and the antibacterial ratio is as high as 71.27% after 7 d-incubation.
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