Hashemifard, S. A. and Ismail, Ahmad Fauzi and Matsuura, T. (2011) Co-casting technique for fabricating dual-layer flat sheet membranes for gas separation. Journal of Membrane Science, 375 (1-2). pp. 258-267. ISSN 0376-7388
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Official URL: http://dx.doi.org/10.1016/j.memsci.2011.03.053
The present research investigated the feasibility of utilizing dual-layer flat sheet membranes for gas separation purpose. Polyetherimide (PEI) was used as top-layer (TL) and blending of polyetherimide and polysulfone (PSF) as sub-layer (SL) polymer matrixes. TL concentration, SL viscosity and SL PEI/PSF composition were chosen as the most important parameters to play with. To study the delamination/adhesion phenomena the PEI/PSF composition of SL was chosen as key-parameter. There was an optimum in the composition which by virtue the delamination phenomenon was suppressed hence guaranteed the TL/SL adhesion. FESEM images were interpreted by solubility analysis and permeation gas testing, and there was a good agreement between the membrane performance and the membrane morphologies. Dual-layer flat sheet membranes at PEI/PSF = 17.5/17.5-25/10, showed an enhancement in both permeance and selectivity. In conclusion, combination of incompatible polymer pairs will be a favourable choice to prepare the substrate membrane. Void spaces between the two incompatible polymers will enhance permeation rate of the substrate membrane, and consequently that of the composite membrane.
|Uncontrolled Keywords:||delamination, dual-layer flat sheet, gas separation, membrane, morphology|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Liza Porijo|
|Deposited On:||29 Nov 2012 08:01|
|Last Modified:||13 Feb 2017 03:25|
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