Characterization of filter media prepared from aligned nanofibers for fine dust screen

Abstract

Nanofibers for fine dust filters of four structures (random, aligned, orthogonal, and nanofiber net) were prepared by electrospinning method using polymers such as PAN and PA6. While conventional electret filters experienced deterioration problems in fine dust(PM1.0) capture as its surface charge decayed, the electrospun nanofibers prepared contributed to the removal capacity. The filters from aligned fibers showed high quality factors ( q F: filter performance indicator) and filtration efficiency from 22 to 50% depending on particle size than simple electret media at a face velocity of 15.92 cm/s. The fiber structure of nanofiber net (NFN) presented almost absolute collection efficiency, particularly on dust particles smaller than 300 nm. Furthermore, the composite filters which are composed both of a commercial electret mask filters and nanofiber nets effectively enhanced the overall filtration efficiency by 59.46%, resulting in more than 99% for PM1.0. Consequently, electrospun polymer nanofibers offer a promising plausible mask filter material with air permeability. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48166.

Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas

“…In the literature, different approaches can be found to reach this goal. Often a high-speed rotating collector is used [21][22][23], but fiber orientation can also be reached by using a pair of blades as the collector [24,25] or stretching the electrospun mat in ethanol [2].…”

Large-Scale Centrifugal Multispinning Production of Polymer Micro- and Nanofibers for Mask Filter Application with a Potential of Cospinning Mixed Multicomponent Fibers

“…Capture efficiency of the fabricated filters gradually increased from 82.97% to 96.63% as the weight of nanofiber increased ( Figure 4 B), showing a slightly higher performance than that of filters consisting of nanofibers with a similar average diameter (∼500 nm; Table S2 ). 61 − 66 Moreover, the performance is almost equal to that of commercial filters with KF80 and KF94 grades, implying excellent performance of our filter made of fibers spun by a centrifugal multispinning system. For the particle removal, inertial impaction and interception effect may be dominant among the well-established mechanisms ( Figure 4 C) considering that the average aerosol size corresponds to submicroscale.…”

A comprehensive study on Plantago ovata/PVA biocompatible nanofibers: Fabrication, characterization, and biological assessment

“…[8] Nanofibers can also find applications in air filtration and protective clothing. [9][10][11] Electrospinning has been successfully and most commonly employed to produce nanofibers with controllable diameters. [12,13] In this method, fiber formation can be influenced by both electrospinning process [14] and solution parameters.…”