Journal article
Robust and Superhydrophobic PTFE Membranes with Crosshatched Nanofibers for Membrane Distillation and Carbon Dioxide Stripping
S Kim, DE Heath, SE Kentish
Advanced Materials Interfaces | WILEY | Published : 2022
Abstract
Polytetrafluoroethylene (PTFE) nanofiber membranes with novel crosshatched structures are developed and applied to both water desalination by direct contact membrane distillation (MD) and CO2 separation by membrane gas absorption. Crosshatched structures are produced from a PTFE-poly(ethylene oxide)(PEO) emulsion by depositing alternating layers of aligned fibers oriented in perpendicular directions. This is followed by sintering to remove the PEO and to stabilize the structure. The crosshatched structure allows for rapid gas and vapor transport due to the low tortuosity and high porosity, leading to fast and effective separation. PTFE nanofiber membranes with these novel structures are idea..
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Awarded by Australian Research Council
Funding Acknowledgements
This research was supported under the Australian Research Council Discovery Projects Scheme (Project number DP190102253). The authors acknowledge the staff of the Materials Characterization and Fabrication Platform (MCFP) at the University of Melbourne and the Victorian Node of the Australian National Fabrication Facility (ANFF) for their technical assistance. Open access publishing facilitated by The University of Melbourne, as part of the Wiley - The University of Melbourne agreement via the Council of Australian University Librarians.