期刊
JOURNAL OF MEMBRANE SCIENCE
卷 452, 期 -, 页码 11-19出版社
ELSEVIER
DOI: 10.1016/j.memsci.2013.10.017
关键词
Surface topography; Thin film composite membrane; Interfacial polymerization; Concentration polarization
资金
- National Science Foundation [CBET-1031785]
- National Science Foundation (NSF) Industry/University Cooperative Research Center for Membrane Science, Engineering and Technology (MAST) at the University of Colorado Boulder (NSF) [IIP 1034720]
- Office of the Vice Chancellor for Research at CU-Boulder
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1264276] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1034720] Funding Source: National Science Foundation
Thin film composite (TFC) membranes are critical components for reverse osmosis (RO) and nanofiltration (NF) processes. Similar to other liquid-based filtration membranes, TFC membranes are susceptible to concentration polarization and fouling/scaling. Recently, surface topography modification has been shown as a potential approach for fouling mitigation. However, for TFC membranes, tailoring the surface topography remains a challenge. Here, we demonstrate for the first time, successful fabrication of a patterned TFC membrane. A two-step fabrication process was carried out by (1) nanoimprinting a polyethersullone (PES) support, and (2) forming a thin dense film atop the FES support via interfacial polymerization (IF) with trimesoyl chloride and 1,3-phenylenediamine solutions. Chemical, topographic, and permeation characterization was performed on the imprinted lP membranes, and their permselectivity was compared with that of a flat (non-imprinted) TFC membrane prepared using he same lP procedure. (C) 2013 Elsevier B.V. All rights reserved.
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