Sulfonated polyphenylene oxide–polyethersulfone thin-film composite membranes: Effect of counterions on the gas transport properties

Thin film composite membranes based on sulfonated poly(phenylene oxide) (SPPO) as the top selective layer and PES ultrafiltration membrane as the support layer, were prepared. The effect of the support membrane pore size distribution, and the effect of exchanging the proton of the sulfonic acid grou...

Full description

Saved in:
Bibliographic Details
Published in:Journal of membrane science 2001-09, Vol.191 (1), p.71-83
Main Authors: Hamad, Feras A, Chowdhury, Geeta, Matsuura, Takeshi
Format: Article
Language:English
Subjects:
Composite membranes
Gas separations
Ion-exchange membranes
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thin film composite membranes based on sulfonated poly(phenylene oxide) (SPPO) as the top selective layer and PES ultrafiltration membrane as the support layer, were prepared. The effect of the support membrane pore size distribution, and the effect of exchanging the proton of the sulfonic acid groups with mono-, di- and trivalent cations on the gas transport properties of the TFC membranes were studied. It was found that the resistance to gas permeation imposed by the PES support layer increased significantly upon exposure to the solvent in the coating solution. The differences in the performance of the TFC membranes having different metal cation replacing the proton of the sulfonic acid groups were explained in terms of the metal cations’ electronegativities and sizes. Very high selectivity associated with reasonable permeance was obtained when the SPPO was in the Al 3+-form.
ISSN:0376-7388
1873-3123
DOI:10.1016/S0376-7388(01)00451-3