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A green approach to modify surface properties of polyamide thin film composite membrane for improved antifouling resistance

Khoo, Ying Siew and Lau, W. J. and Liang, Y. Y. and Karaman, Mustafa and Gürsoy, Mehmet and Ahmad Fauzi, Ismail (2020) A green approach to modify surface properties of polyamide thin film composite membrane for improved antifouling resistance. Separation and Purification Technology, 250 (116976). pp. 1-11. ISSN 1383-5866

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Abstract

A green approach based on plasma enhanced chemical vapour deposition (PECVD) method was adopted in this work to modify surface properties of thin film composite (TFC) membranes for improved antifouling resistance during desalination process. Two types of hydrophilic monomers, i.e., acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA) was respectively deposited onto the surface of commercial TFC membranes (XLE and NF270) and the effect of plasma deposition time (15 s, 1 min and 5 min) on the membrane physiochemical properties was investigated using different analytical instruments. The deposition of AA and HEMA was able to improve the membrane hydrophilicity owing to the presence of hydroxyl and carboxyl functional groups. However, prolonged plasma polymerization period was not encouraged as it led to the formation of thicker skin layer that significantly reduced water permeability. With 15-s plasma deposition time, AA and HEMA-modified XLE and NF270 membranes could achieve higher NaCl and Na2SO4 rejections as well as demonstrate 100% flux recovery rate. The improved antifouling resistance of modified TFC membranes is mainly due to the improved surface hydrophilicity coupled with greater surface charge properties. This work demonstrated a rapid solvent-free surface modification method that can be employed to enhance TFC membrane properties for desalination process.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Surface modification; TFC membrane; PECVD; Hydrophilic monomers; Anti-fouling
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical and Process Engineering Technology
Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Institute of Postgraduate Studies
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 12 Aug 2020 02:28
Last Modified: 12 Aug 2020 02:28
URI: http://umpir.ump.edu.my/id/eprint/28937
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