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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2014.24.4.317

Preparation and Characterization of Polyamide Thin Film Composite Reverse Osmosis Membranes Using Hydrophilic Treated Microporous Supports  

Son, Seung Hee (Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology)
Jegal, Jonggeon (Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology)
Publication Information
Membrane Journal / v.24, no.4, 2014 , pp. 317-324 More about this Journal
Abstract
It is very well known that the conventional polyamide (PA) thin film composite (TFC) reverse osmosis (RO) membranes have excellent permselective properties, but their chlorine tolerance is not good enough. In this study, to improve such chlorine tolerance, microporous membranes containing hydrophilic functional groups such as -COOH were used as a support to prepare PA TFC RO membranes, employing the conventional interfacial polymerization method. Meta-phenylene diamine (MPD) and 2,6-diamine toluene (2,6-DAT) were used as diamine monomers and tri-mesoyl chloride (TMC) as an acid monomer. The membranes prepared were characterized using various instrumental analytical methods and permeation test set-up. The flux obtained from the membranes prepared so was more than $1.0m^3/m^2day$ at 800 psi of operating pressure, while the salt rejection was over 99.0%. The chlorine tolerance of them was also found to be better than that of the membrane prepared by using conventional polysulfone support without hydrophilic functional groups.
Keywords
RO Membrane; Chlorine tolerance; Hydrophilic functional group; support;
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