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Influence of solvent and non-solvent on polyimide asymmetric membranes formation in relation to gas permeation

Abstract : Asymmetric 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA)-2-methyl-1, 3-phenylenediamine (mPDA) polyimide membranes were prepared by phase inversion process. Using different non-solvents and solvents, the correlation between membrane elaboration conditions and final morphology and properties has been investigated. Equilibrium thermodynamics and diffusion coefficients data were determined as a preliminary analysis in order to underline competitivity between thermodynamic and kinetic parameters. Scanning electron microscopy and gas permeation experiments (CO2, N2) were used for the determination of structure-permeability relationships. Sponge-like structure membranes and highest selectivity were obtained when using non-solvent/solvent/6FDA-mPDA systems having important coagulation time.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-01869136
Contributor : Didier Le Cerf <>
Submitted on : Thursday, September 6, 2018 - 11:53:06 AM
Last modification on : Wednesday, December 4, 2019 - 11:18:05 AM

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Nathalie Leblanc, Didier Le Cerf, Corinne Chappey, Dominique Langevin, Michel Métayer, et al.. Influence of solvent and non-solvent on polyimide asymmetric membranes formation in relation to gas permeation. Separation and Purification Technology, Elsevier, 2001, 22-23, pp.277-285. ⟨10.1016/S1383-5866(00)00129-5⟩. ⟨hal-01869136⟩

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