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http://dx.doi.org/10.9713/kcer.2016.54.4.510

Thin-Film Composite (TFC) Membranes with Hydrophilic Ethyl Cellulose-g-poly(ethylene glycol) (EP) Substrates for Forward Osmosis (FO) Application  

Yu, Yun Ah (School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University)
Kim, Jin-joo (School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University)
Kang, Hyo (Department of Chemical Engineering, Dong-A University)
Lee, Jong-Chan (School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University)
Publication Information
Korean Chemical Engineering Research / v.54, no.4, 2016 , pp. 510-518 More about this Journal
Abstract
Ethyl cellulose-g-poly(ethylene glycol) (EP) was synthesized by esterification of carboxylic acid functionalized methoxy polyethylene glycol (MPEG-COOH) with ethyl cellulose (EC) in order to develop a hydrophilic substrate for thin-film composite (TFC) membrane in a forward osmosis (FO) system. A porous EP substrate, fabricated by a non-solvent induced phase separation method, was found to be more hydrophilic than the EC substrate due to the presence of polyethylene glycol (PEG) side chains in the EP. Since the EP substrate exhibits smaller water contact angles and higher porosity, the structural parameter (S) of TFC-EP is smaller than that of TFC-EC, indicating that internal concentration polarization (ICP) within porous substrates can occur less when TFC-EP is used as a membrane. For example, the water flux value of the TFC-EP is 15.7 LMH, whereas the water flux value of the TFC-EC is only 6.6 LMH. Therefore, we strongly believe that the TFC-EP could be a promising candidate with good FO performances.
Keywords
Forward osmosis; Thin-film composite membrane; Hydrophilic substrates; Ethyl cellulose; Structural parameter;
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Times Cited By KSCI : 3  (Citation Analysis)
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