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Biocidal nanofibers via electrospinning

机译:通过静电纺丝的杀菌纳米纤维

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摘要

To achieve biocidal properties, a cyclic N-halamine precursor, 7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]-decane-2,4-dione (TTDD), was synthesized and introduced into nanosized polyacrylonitrile fibrous mat by an electrospinning technique. It was rendered antimicrobial by exposure to dilute hypochlorite solution. Synthesis routes and characterization data are presented. Scanning electron microscopy (SEM) demonstrated that the ultrafine fiber possessed average diameter 414 nm (from 240 to 650 nm). The chlorinated nanofibrous composites provided about 4.9 log reductions of both Gram-positive bacteria Staphylococcus aureus (ATCC 6538) and Gram-negative bacteria Escherichia coli O157:H7 (ATCC 43895) within 5 min of contact time. This is indicative of promising possible applications in the filtration of water and air.
机译:为了实现杀菌性能,合成了环状N-卤胺前体7,7,9,9-四甲基-1,3,8-三氮杂螺[4.5]-癸烷-2,4-二酮(TTDD),并将其引入纳米级聚丙烯腈纤维毡通过静电纺丝技术。通过暴露于稀释的次氯酸盐溶液使其具有抗菌性。给出了合成路线和表征数据。扫描电子显微镜(SEM)表明,超细纤维的平均直径为414nm(240至650nm)。氯化纳米纤维复合材料在接触时间内5分钟内,革兰氏阳性菌金黄色葡萄球菌(ATCC 6538)和革兰氏阴性菌大肠杆菌O157:H7(ATCC 43895)均降低了约4.9 log。这表明在水和空气的过滤中有望应用。

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