FUNCTIONALIZATION OF POLY(ARYL ETHER ETHER KETONE) - SYNTHESIS OF BROMOMETHYLATED PEEK AND ITS FUNCTIONALIZATION

Bromomethyl poly (aryl ether ether ketone) has been prepared from meth yl poly (aryl ether ether ketone) (MePEEK) and has been used as the pr ecursor to many forms of functionalized PEEK. MePEEK was brominated di rectly with bromine. Bromination takes place exclusively at the methyl group. The reaction conditions for bromination have been studied. The bromination level can be controlled by the amount of bromine used, up to 90% of the methyl groups can be brominated to mono-bromo and di-br omo methyl PEEK. Modification reactions have been carried out on the b rominated methyl PEEK. The bromomethyl group has been converted to dif ferent functional groups, such as - CH2OH, - CH2OCH3, -COOCH3, -CH2 ($ ) under bar CN, -CH2COOH, -CH2OCOCH3, -CH2N+H (CH2CH3Br-,-CH2N(CH2CH3) (2), -CH2N+(CH2CH3)(3) Br-.