以载锌蒙脱土为前驱体, 在蒙脱土的层间, 引入吡啶硫酮阴离子, 原位制备了新型的吡啶硫酮锌/蒙脱土(ZPT/MMT)抗菌材料. 采用XRD、FT-IR、TG、DSC和UV-Vis DRS对材料的插层结构、耐光、耐热性能进行分析,结果表明, 蒙脱土层间的吡啶硫酮阴离子以吡啶硫酮锌的形式存在, 致使层间距d001值由1.29nm增至1.85nm, 并且ZPT/MMT具有较好的耐光性和耐热性(热分解温度高于240℃).抗菌试验结果表明, ZPT/MMT对大肠杆菌和金黄色葡萄球菌具有较好的抗菌活性.
A novel antibacterial composite, zinc pyrithione/montmorillonite(ZPT/MMT) was in situ prepared by introducing pyrithione anion into the galleries of zinc-exchanged montmorillonite. The results of XRD, FT-IR, TG, DSC and UV-Vis DRS show that pyrithione anion exists in the form of zinc pyrithione, resulting in an increase of basal spacing of montmorillonite (d001 value) from 1.29nm to 1.85nm, and the ZPT/MMT has a favorable light and thermal stability (the decomposition temperature is above 240℃). Antibacterial assays indicate that ZPT/MMT has an excellent antibacterial activity against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus.
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