Polysulfone — sulfonated poly(ether ether) ketone blend membranes: systematic synthesis and characterisation

Bowen, W. R., Doneva, T. A. and Yin, H.B. (2001) Polysulfone — sulfonated poly(ether ether) ketone blend membranes: systematic synthesis and characterisation. Journal of Membrane Science, 181(2), pp. 253-263. (doi:10.1016/S0376-7388(00)00541-X)

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Abstract

The effect of sulfonated poly(ether ether ketone) (SPEEK) in membrane formation and separation properties has been investigated in polysulfone(PSU)/SPEEK/N-methyl-2-pyrrolidinone (NMP) systems. Charged ultrafiltration/nanofiltration membranes were obtained reliably in the range of 0.5–5 wt.% SPEEK in the polymer blend. All PSU/SPEEK blend membranes had substantially higher water flux, salt rejection, porosity and greatly reduced particle adhesion compared to the PSU base membrane. Further, all of these properties varied systematically with variation of SPEEK content. Reproducibility and stability of the membrane properties was excellent. Pore sizes determined from dextran retention data and AFM measurements showed reasonable agreement. Membranes with 5 wt.% SPEEK demonstrated excellent overall properties. Such membranes had very high permeability, 22.6±1.6×10−11 m3 s−1 N−1, 0.999 fractional rejection of 4000 Da dextran, 0.65 rejection of 0.001 M NaCl, and only 0.75 mN m−1 adhesion of a 4 μm silica particle. Such membranes are very promising for scale-up of production and testing on real process streams.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Yin, Professor Huabing
Authors: Bowen, W. R., Doneva, T. A., and Yin, H.B.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Journal of Membrane Science
Publisher:Elsevier
ISSN:0376-7388
ISSN (Online):1873-3123
Published Online:10 January 2001

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