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High efficiency poly(acrylonitrile) electrospun nanofiber membranes for airborne nanomaterials filtration

journal contribution
posted on 2018-01-01, 00:00 authored by Riyadh AL-Attabi, Ludovic DumeeLudovic Dumee, Lingxue KongLingxue Kong, J A Schütz, Y Morsi
The potential of poly(acrylonitrile) electrospun membranes with tuneable pore size and fiber distributions were investigated for airborne fine-particle filtration for the first time. The impact of solution concentration on final membrane properties are evaluated for the purpose of designing separation materials with higher separation efficiency. The properties of fibers and membranes are investigated systematically: the average pore distribution, as characterized by capillary flow porometry, and thermo-mechanical properties of the mats are found to be dependent on fiber diameter and on specific electrospinning conditions. Filtration efficiency and pressure drop are calculated from measurement of penetration through the membranes using potassium chloride (KCl) aerosol particles ranging from 300nm to 12μm diameter. The PAN membranes exhibited separation efficiencies in the range of 73.8-99.78% and a typical quality factor 0.0224 (1Pa -1 ) for 12wt% PAN with nanofibers having a diameter of 858nm. Concerning air flow rate, the quality factor and filtration efficiency of the electrospun membranes at higher face velocity are much more stable than for commercial membranes. The results suggest that the structure of electrospun membranes is the best for air filtration in terms of filtration stability at high air flow rate.

History

Journal

Advanced engineering materials

Volume

20

Issue

1

Article number

1700572

Pagination

1 - 10

Publisher

John Wiley & Sons

Location

Chichester, Eng.

ISSN

1438-1656

eISSN

1527-2648

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2017, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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