Preparation of new composite membranes for water desalination using electrodialysis

Chalida Klaysom; Leatitia Germain; Shawn Burr; Bradley P. Ladewig; Lianzhou Wang; Joe D. da Costa; G. Q. Max Lu

doi:10.1117/12.810443

30 December 2008 Preparation of new composite membranes for water desalination using electrodialysis

Chalida Klaysom, Leatitia Germain, Shawn Burr, Bradley P. Ladewig, Lianzhou Wang, Joe D. da Costa, G. Q. Max Lu

Proceedings Volume 7267, Smart Materials V; 72670C (2008) https://doi.org/10.1117/12.810443
Event: SPIE Smart Materials, Nano- and Micro-Smart Systems, 2008, Melbourne, Australia

Abstract

The use of polyethersulfone (PES), an excellent but highly hydrophobic thermoplastic, as a matrix material for ionexchange membranes was investigated. To make PES ion-exchangeable, sulfonate groups were introduced to the polymer chains by sulfonation reaction with chlorosulfonic acid. The degree of sulfonation of sPES was estimated to be 21%. Preliminary experiments investigated the effect of polyethylene glycol (PEG) and Pluronic F127 as fillers to improve the hydrophilicity of the membranes. Moreover, a lab scale electrodialysis cell has been designed and set up to evaluate the performance of these novel membranes compared to the benchmark of commercial membranes. The results show promising properties of ion-exchange capacity, water uptake, conductivity and hydophilicity from blended membranes, comparable to commercial membranes, though the performance of the prepared membranes did not exceed the commercial one. Further characterization of the transport properties of ion-exchange membranes need to be investigated to be able to understand the effects of the fillers on the performance of the membranes in ED application.

Citation Download Citation

Chalida Klaysom, Leatitia Germain, Shawn Burr, Bradley P. Ladewig, Lianzhou Wang, Joe D. da Costa, and G. Q. Max Lu "Preparation of new composite membranes for water desalination using electrodialysis", Proc. SPIE 7267, Smart Materials V, 72670C (30 December 2008); https://doi.org/10.1117/12.810443

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