Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 56, Issue 19, Pages 5724-5733Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b00631
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Funding
- UMass as part of (NIH, National Research Service Award) [T32 GM108556]
- National Science Foundation [NSF CBET-1342343, NSF CBET-1719747]
- Professor James M. Douglas Career Development Faculty Award
- U.S. Geological Survey State Water Resources Institute Program (USGS WRIP) [2015MA436B]
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In this study, we have improved membrane performance by enhancing ultrafiltration membranes with electrospun nanofibers. The high-porosity nanofiber layer provides a tailorable platform that does not affect the base membrane structure. To decouple the effects that nanofiber chemistry and morphology have on membrane performance, two polymers commonly used in the membrane industry, cellulose and polysulfone, were electrospun into a layer that was 50 mu m thick and consisted of randomly accumulated 1-mu m-diameter fibers. Fouling resistance was improved and selectivity was retained by ultrafiltration membranes enhanced with a layer of either cellulose or polysulfone nanofibers. Potentially because of their better mechanical integrity, the polysulfone nanofiber-membranes demonstrated a higher pure-water permeance across a greater range of transmembrane pressures than the cellulose nanofiber-membranes and control membranes. This work demonstrates that nanofiber-enhanced membranes hold potential as versatile materials platforms for improving the performance of ultrafiltration membranes.
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