Highly efficient transparent air filter prepared by collecting-electrode-free bipolar electrospinning apparatus
Highly efficient transparent air filter prepared by collecting-electrode-free bipolar electrospinning apparatus
复制标题
无收集电极双极静电纺丝装置制备的高效透明空气过滤器。
DOI：
10.1016/j.jhazmat.2019.121535
复制
发表时间：
2020-03-05
影响因子：
13.6
通讯作者：
Long, Yunze
中科院分区：
文献类型：
--
作者：
Wang, Xiaoxiong;Xiang, Hongfei;Long, Yunze
静电纺丝技术已经使用了很长时间。通过施加高电压形成来自针的射流，然后将纳米纤维沉积到收集电极（通常是金属）上，并将多余的电荷传导走以完成静电纺丝。或者，也可以通过电荷中和来防止电荷积累阻碍静电纺丝的进行。发展了一种双极静电纺丝技术（B-EEM），通过一组极性相反的高压电源诱导不同电荷的射流，两股射流在绝缘网上相互中和，从而完成静电纺丝过程。不需要收集电极来完成静电纺丝过程。我们已经发现，通过新技术生产的过滤器具有更好的过滤效率，同时相对于原始技术保持相同的透明度，这种优化是由于纳米纤维在网格上的分布改变。
Electrospinning technology has been used for a long time. A jet from a needle was formed by applying high voltage, and then the nanofibers are deposited onto a collecting electrode (usually metal) and the excess charge is conducted away to complete the electrospinning. Alternatively, it is also possible to prevent charge accumulation from hindering the progress of electrospinning by means of charge neutralization. A bipolar electrospinning technique (B-EEM) was developed to induce jets with different charges through a set of high-voltage power supplies of opposite polarity, and the two jets neutralize each other on the insulating mesh, thus completing the electrospinning process. There is no need for a collecting electrode to complete the electrospinning process. We have found that the filters produced by the new technology have better filtration efficiency while maintaining the same transparency in relative to the original technology, and this optimization is due to the distribution modification of the nanofibers on the mesh.