dc.contributor.authorLiu, Li-Fen
dc.contributor.authorGu, Xing-Ling
dc.contributor.authorQi, Sa-Ren
dc.contributor.authorXie, Xin
dc.contributor.authorLi, Rui-Han
dc.contributor.authorLi, Ke
dc.contributor.authorYu, Chun-Yang
dc.contributor.authorGao, Cong-Jie
dc.identifier.citationLiu, L.-F., Gu, X.-L., Qi, S.-R., Xie, X., Li, R.-H., Li, K., et al. (2018). Modification of polyamide-urethane (PAUt) thin film composite membrane for improving the reverse osmosis performance. Polymers, 10(4), 346-.en_US
dc.description.abstractIn the current study, the poly (amide-urethane) (PAUt) membranes were successfully fabricated by interfacial polymerization of m-phenylenediamine (MPD) and 5-choroformyloxyisophaloyl chloride (CFIC) on the polysulfone substrates. Two modification methods based on layer-by-layer assembly were applied to modify the PAUt membrane surface to achieve antifouling property: 1. Chitosan (CS) was directly self-assembled on the PAUt membrane (i.e., PAUt-CS); and 2. polydimethyl diallyl ammonium chloride (PDDA), polystyrene sulfonate (PSS), and CS were successively self-assembled on the membrane surface (i.e., PAUt-PDDA/PSS/CS). The resultant membranes were symmetrically characterized by Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Contact Angle Meter (CAM), respectively. The results indicated that the modified membranes had much smoother and more hydrophilic surfaces as compared to the nascent PAUt membrane. Meanwhile, the modified membranes exhibited better reverse osmosis performance in terms of water permeability and salt rejection. After the modified membranes were fouled by lake water, the PAUt-PDDA/PSS/CS membrane presented the best antifouling performance among the three types of membranes. Combining the reverse osmosis performance with the anti-fouling property obviously, the PAUt-PDDA/PSS/CS membrane behaved as a promising candidate to be used in real applications.en_US
dc.format.extent13 p.en_US
dc.rights© 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.subjectPoly (amide-urethane)en_US
dc.subjectReverse Osmosisen_US
dc.titleModification of polyamide-urethane (PAUt) thin film composite membrane for improving the reverse osmosis performanceen_US
dc.typeJournal Article
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.description.versionPublished versionen_US

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