Abstract: A series of fluorene-containing cross-linkable poly(arylene ether ketone)s (PAEKs) with pendant propenyl group was synthesized by copolymerization from 9,9-bis(4-hydroxyphenyl)fluorene, diallyl bisphenol-A, and 4,4'-difluorobenzophenone via the gradual addition reaction of nucleophilic substitution. FTIR, NMR, DSC, and TG were emloyed to characterized the structure, thermal cross-linking reaction, and the thermal stability of the polymers. It showed that the cross-linking reaction occurred under heating, with the gel content reaching to 97.5 %. After cross-linking, the thermal stability and solvent resistance of the polymer were increased.

Key words: poly(arylene ether ketone)s, fluorene, cross-linking, synthesis