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本文采用静电纺丝技术制备纳米Ag-聚乙烯醇缩丁醛(PVB)复合纳米纤维,获得一类过滤性能和抗菌性能优异的空气过滤材料。采用TEM分析纳米Ag的形貌,采用SEM、FTIR和XRD等表征手段研究纳米Ag-PVB复合纳米纤维的微观形貌、化学结构以及结晶行为,并对其空气过滤性能、透气性能和抗菌性能进行了研究。结果表明:以乙醇为溶剂,当PVB含量为10 wt%、纳米Ag含量为0.25 wt%时,得到的纤维尺寸均一,平均直径为542.14 nm。性能测试结果表明,纺丝最佳时间为10 min,纳米Ag-PVB复合纳米纤维对PM2.5过滤效率为99.99%,过滤阻力为16 Pa,透气率为155.0 mm/s,并且对于大肠杆菌表现出优异的抗菌性能,其抑菌率为95.52%。
In this paper, nanostructured Ag-polyvinyl butyral (PVB) composite nanofibers were prepared by electrospinning technology, and a kind of air filter material with excellent filtration performance and antibacterial property was obtained. The morphology of nanostructured Ag-PVB nanofibers was characterized by SEM, FTIR and XRD. The morphology, chemical structure and crystallization behavior of nanostructured Ag-PVB nanofibers were studied. The air filtration, air permeability and antibacterial properties Study. The results showed that the average fiber diameter was 542.14 nm when the content of PVB was 10 wt% and the content of nano-Ag was 0.25 wt% using ethanol as solvent. The results of performance test showed that the optimum spinning time was 10 min, the nano-Ag-PVB composite nanofibers had a filtration efficiency of 99.99% for PM2.5, a filtration resistance of 16 Pa and an air permeability of 155.0 mm / s, Outstanding antibacterial properties, the antibacterial rate was 95.52%.