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银基蒙脱土/壳聚糖的制备及性能

, PP. 88-92

Keywords: 壳聚糖,银基蒙脱土,抑菌,动态力学性能,复合材料

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Abstract:

为了在改善壳聚糖(CS)抑菌性能的同时提高其强度,将银基蒙脱土(Ag-MMT)在CS的醋酸溶液中通过溶液插层法制备了银基蒙脱土/壳聚糖(Ag-MMT/CS)。在模拟体液环境中测得的银离子释放性能显示Ag-MMT/CS中的银离子可以达到平稳缓慢释放;通过最小抑菌圈法对Ag-MMT/CS进行抑菌性能测试,结果表明,Ag-MMT/CS对金黄色葡萄球菌有良好的抑菌效果,抑菌圈直径可达9.2mm,比CS增大50.6%,抑菌率测试结果显示蒙脱土的加入有助于吸附并杀死更多的细菌;动态热机械分析(DMA)测试结果显示,Ag-MMT/CS的储能模量最高可达3261MPa,比CS提高195%,显示出良好的动态力学性能。

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