Permeability of electrospun fiber mats under pressure driven flow
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choong_ms.pdf
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1.46 MB
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Checksum (MD5)
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Author(s)
Choong, Looh Tchuin (Simon)
Khan, Zafarullah
Rutledge, Gregory C.
Alternative Title
Permeability of electrospun fiber mats under hydraulic flow
Date Issued
October 2013
Journal
Journal of Membrane Science
Publisher
Elsevier
Citation
Choong, Looh Tchuin (Simon), Zafarullah Khan, and Gregory C. Rutledge. “Permeability of Electrospun Fiber Mats Under Hydraulic Flow.” Journal of Membrane Science 451 (February 2014): 111–116.
Version
Author's final manuscript
Abstract
The hydraulic permeabilities of electrospun fiber mats are found to be functions of their compressibility. Hydraulic permeabilities of electrospun mats of bis-phenol A polysulfone (PSU) comprising fibers of different mean diameters, annealed at temperatures at and above the glass transition of the polymer, were measured for feed water pressures ranging from 5 kPa to 140 kPa. The electrospun mats experience a decrease of more than 60% in permeability between 5 kPa and 140 kPa, due to the loss of porosity, attributed to flow-induced compression. This behavior is explained using a simple model based on Darcy's law applied to a compressible, porous medium. Happel's equation is used to model the permeability of the fiber mats, and Toll's equation is used to model their compressibility. The permeation model accurately estimates the changes in solidity, and hence the permeability of the electrospun mats, over a range of pressure differentials.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.memsci.2013.09.051
