Abstract:

Two novel poly(ether ether ketone)s(PEEK) containing imide moiety with inherent viscosities of 0.98 dL/g and 0.61 dL/g were respectively prepared by low temperature solution polycondensation from 1,4diphenylbenzene(DPB) with N,N′-(4,4′-diphenylmethane) bistrimelletimide diacid chloride(DCDI-M) or N,N′-(4,4′-diphenylsulfone) bistrimelletimide diacid chloride(DCDI-S). The polymers were characterized by FT-IR,¹H NMR, DSC, TGA and WAXD. The results show that the polymers are amorphous. The glass transition temperatures(T_g) are 236 ℃ and 263 ℃, respectively. The onset temperatures taken at a 5% mass loss of each of the polymers in nitrogen atmosphere are all over 512 ℃. The polymers are soluble in common organic solvents such as N,N-dimethylacetamide(DMAc), N-methylpyrrolidone(NMP), cresol and chloroform at room temperature.

Key words: imide moiety,diphenoxylbenzene,poly(ether ether ketone)