Abstract: A new bisphenol monomer (3,4–difluoro)phenylhydroquinone, was thesised in a three-step synthesis. Fluoropoly (aryl ether ketone)s (FPAEK) and Fluoropoly (aryl ether sulfone)s (FPAEF) were prepared from the three bisphenol monomers and 4,4′ -diflourodiphenylketone or bis-(4- chlorophenyl) sulfone via a nucelophilic aromatic substitution polycondensation, respectively. The structures of the monomer and polymers were confirmed by 1H-NMR and FT-IR, and the properties of FPAEK and FPAEF were also studied by DSC, TGA, WXRD, etc. It was found FPAEK and FPAEF show high temperature stability, i.e the 5% weight loss temperatures were above 527℃ and 507℃ in N2, and their glass transition temperatures (Tg) ranged from 150℃ to 159℃ for FPAEK and from 177℃ to 196℃ for FPAEF in N2. Furthermore, these polymers have good solubility in some polar aprotic solvents such as NMP, DMAc, CHCl3, etc, which is an important advantage to process them for practical applications.

Key words: fluoropoly (aryl ether ketone), fluoropoly (aryl ether sulfone), fluoropolymer, thermal property, solubility