POLYPHENYLENE-TYPE POLYMERS, PREPARATION METHOD THEREOF, MEMBRANES AND FUEL CELL DEVICE COMPRISING SAID MEMBRANES

摘要

The invention relates to polymers comprising phenylene units at least one of which bears laterally a phenylene group which is substituted by a group or a perfluorinated chain which itself bears a -S03H, -P03H2 or -CO2H group. The invention also relates to the use of said polymer in forming fuel cell membranes.