| 摘要 |
Membrane for the tangential filtration of a fluid, said membrane comprising a porous support ( 2 ) delimiting at least one flow channel ( 3 ) for the fluid flowing in a given direction (f) between an inlet ( 6 ) and an outlet ( 7 ), the inner surface ( 4 ) of the porous support ( 2 ) which delimits channel ( 3 ) being coated with at least one separator layer ( 5 ) for the fluid, characterized in that the support has variable partial pore-filling (c) extending from the inner surface ( 4 ) of support ( 2 ) on which the separator layer ( 5 ) is deposited, said variable partial pore-filling creating a mean porosity gradient on portion ( 8 ) of support ( 2 ) of given constant thickness (e) extending from the inner surface ( 4 ) of support ( 2 ), the minimum mean porosity being located at the inlet ( 6 ) and the maximum mean porosity at the outlet ( 7 ).
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