SEPARATION METHOD AND DEVICE WITH SEMI-PERMEABLE MEMBRANES COMPRISING SULPHONATED POLYIMIDES

摘要

The invention concerns a separation method and device with semi-permeable membranes wherein said membranes comprise sulphonated polyimides. The invention also concerns the use of sulphonated polyimide membranes in separation processes and devices using semi-permeable membranes. Said membranes comprise a sulphonated polyimide corresponding to the general formula (I).