polysulfone polymer is used for preparing asymmetric membrane by inversion phase method , we need to use a solvent like DMF, NMP,... I would like to discuss with you
which solvent is optimum in point of view chemical, economic and environmental ?
N-methylpyrrolidone (NMP) is optimal from many points of view, e.g. price, enviromental issues and recycling.
I think you can try to employ mix solvent of DMSO and water with 1:1 volume ratio.
N-methylpyrrolidone (NMP) is optimal from many points of view, e.g. price, enviromental issues and recycling.
Dear All
Many thanks for your reply. they are very interesting.
please, could you give me some references ?
thank once again and best wishes
In the article below, RG colleagues prepared polysulfone and polysulfone–silica nanocomposite membranes using polymer solutions from various solvents: DMAc, NMP, and THF, which differ in their abilities to dissolve polysulfone. They found out that NMP was the best. My regards.
Article Effect of solvent type on the morphology and gas permeation ...
Dear Nizar Matar,
Many thanks for your kind response, that study show well the effect of solvent on the morphology and permeation through PSF membrane.
I'm very grateful for your nice contribution
N-methylpyrrolidone (NMP) and DMSO seems to be the best optimum from chemical, economic and environmental point of view.
Thank you ankush Gupta for your answer.
I agree with you . many studies confirm your proposition
Various solvents including N, N-dimethylacetamide (DMAc), N, N-dimethyl-formamide (DMF), 1-methyl-2-pyrrolidone (NMP) and dimethyl sulfoxide (DMSO) have different impacts on membrane morphology and separation performance. Therefore, choosing the proper solvent depend on process criteria and feed properties.
For further information, you can check the following article.
Article Surface modification of polyethersulfone ultrafiltration mem...
Hi,
DMSO is not a good solvent. It makes the PES/DMSO membranes too brittle.
Regards
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