Thermoregulated gas transport through electrospun nanofiber membranes
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Han_thermoresponse.pdf
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5.09 MB
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Adobe PDF
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cf6fbe892949618a84e8c5e6289ad56e
Author(s)
Han, Sangil
Rutledge, Gregory C
Date Issued
November 2014
Journal
Chemical Engineering Science
Publisher
Elsevier
Citation
Han, Sangil, and Gregory C. Rutledge. “Thermoregulated Gas Transport through Electrospun Nanofiber Membranes.” Chemical Engineering Science 123 (2015): 557–563.
Version
Author's final manuscript
Abstract
Thermoregulation of gas transport using electrospun fiber membranes is demonstrated experimentally for the first time. The fiber membranes comprise three layers: a middle layer of electrospun polystyrene sandwiched between two outer layers of electrospun cellulose acetate mat as supports, bonded together by hot pressing. The electrospun polystyrene layer serves as a phase change material that blocks transport of gases though the membrane when the fibers de-vitrify. The membrane exhibited a reduction in oxygen flux at temperatures in excess of 140 °C. Using a blend of polysulfone and polystyrene resulted in an upward shift of the transition temperature to 250 °C. Modeling of transport was performed to estimate the impact of the morphological properties of the membranes such as tortuosity, fiber diameter, and porosity.
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.ces.2014.11.040
