Issue 33, 2020, Issue in Progress
From the journal:

RSC Advances

Continuous production and properties of mutil-level nanofiber air filters by blow spinning†

Jianan Song,‡a   Zhenglian Liu,‡b   Ziwei Lia  and  Hui Wu ORCID logo *a  

* Corresponding authors

a State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
E-mail: huiwu@mail.tsinghua.edu.cn

b School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China

Abstract

Nanofibers are gradually being widely used in air filtration due to their unique characteristics. However, the mass production of nanofiber filter material faces several problems. Blow spinning is an emerging technology, which have great potential for mass production of nanofibers. In this work, we have successfully realized the continuous production of 500 mm wide nanofiber membranes by blow spinning, which enables continuous preparation of multi-level nanofiber filter materials: PAN60 (filtration efficiency is 63.2%, pressure drop is 18 Pa), PAN80 (filtration efficiency is 80.7%, pressure drop is 38 Pa), PAN90 (filtration efficiency is 92.9%, pressure drop is 58 Pa) and PAN99 (filtration efficiency is 99.5%, pressure drop is 123 Pa). In order to improve the stability performance of melt-blown filters, we provide a strategy that combines nanofibers with a melt-blown filter. PAN nanofibers were sprayed directly on the melt-blown filter by blow spinning. The composite filters have more stable filtration performance and higher efficiency when intercepting particles with a diameter below 100 nm than melt-blown filters.

Graphical abstract: Continuous production and properties of mutil-level nanofiber air filters by blow spinning

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Article information

DOI
https://doi.org/10.1039/D0RA01656J
Article type
Paper
Submitted
21 Feb 2020
Accepted
22 Apr 2020
First published
22 May 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 19615-19620

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Continuous production and properties of mutil-level nanofiber air filters by blow spinning

J. Song, Z. Liu, Z. Li and H. Wu, RSC Adv., 2020, 10, 19615 DOI: 10.1039/D0RA01656J

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