• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Large scale poly(vinyl alcohol-co-ethylene)/TiO2 hybrid nanofibrous filters with efficient fine particle filtration and repetitive-use performance
【24h】

Large scale poly(vinyl alcohol-co-ethylene)/TiO2 hybrid nanofibrous filters with efficient fine particle filtration and repetitive-use performance

机译：具有高效细颗粒过滤和重复使用性能的大型聚乙烯醇/乙烯/ TiO2杂化纳米纤维过滤器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Severe air pollution results in a great demand for high-yielding nanofiber-based materials with excellent filtration performance. In this work, PVA-co-PE/TiO2 hybrid nanofibrous filters on PP nonwoven supports were prepared on a large scale via a melt phase separation and suspension coating technique. The hybrid nanofibers doped by TiO2 nanoparticles have a diameter in the range from about 50 nm to 300 nm. With increasing fiber coverage density, the average pore size of the hybrid nanofibrous filter media declines from 10 mu m for PP nonwoven to less than 500 nm. Compared to pristine PVA-co-PE nanofibrous filter media, the hybrid nanofibrous filters exhibit much higher filtration efficiency and lower pressure drop, which further induces an increased quality factor by about 167%. This is mainly attributed to the enhanced electrostatic absorption between hybrid nanofibers and NaCl aerosol nanoparticles caused by the polarity of TiO2. Besides, the secondary factor is the slightly weakened direct-interception ability of the filter media with increased pore size. Furthermore, it was found that a multilayered-structure was generated by the cyclic swilling-drying handling. This structure results in the steadily increasing particle-collection capability and quality factor of PVA-co-PE/TiO2 hybrid nanofibrous filter media, implying its superiority in the application as an air filter media with high filtration efficiency and repetitive-use performance.
机译：严重的空气污染导致对具有优异过滤性能的高产量纳米纤维基材料的大量需求。在这项工作中，通过熔体相分离和悬浮涂覆技术大规模制备了PP无纺布载体上的PVA-co-PE / TiO2杂化纳米纤维滤料。由TiO 2纳米颗粒掺杂的杂化纳米纤维的直径在约50nm至300nm的范围内。随着纤维覆盖密度的增加，杂化纳米纤维滤料的平均孔径从PP无纺布的10微米下降到小于500 nm。与原始的PVA-co-PE纳米纤维滤料相比，混合纳米纤维滤料显示出更高的过滤效率和更低的压降，这进一步导致品质因数提高了约167％。这主要归因于由TiO2的极性引起的杂化纳米纤维和NaCl气溶胶纳米颗粒之间增强的静电吸收。此外，次要因素是随着孔径的增加，过滤介质的直接拦截能力略有减弱。此外，发现通过循环干燥和干燥产生了多层结构。这种结构导致PVA-co-PE / TiO2杂化纳米纤维过滤介质的颗粒收集能力和品质因数稳定提高，这暗示了其在作为具有高过滤效率和重复使用性能的空气过滤介质的应用中的优越性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号