One-pot Synthesis and Characterization of Poly(meta-aryl sulfide sulfone imide imide)

Poly(meta-aryl sulfide sulfone imide imide) (m-PASSII) was synthesized by one-pot process using 4-chlorophthalic anhydride, 3,3'-diamino diphenyl sulfone and sodium sulfide (Na2S center dot xH2O) as starting materials in N-methyl-2-pyrrolidone at atmospheric pressure. The intrinsic viscosity of m-PASSII was obtained with optimum synthesis conditions is 0.21-0.27 dl/g. The polymer and the separated intermediates which generated during the synthesis process were characterized by elemental analysis, FT-IR spectrum, 1H-NMR spectrum, X-ray diffraction, DSC, TGA and dissolvability experiment. The polymer is found to have excellent thermal performance with glass transition temperature (Tg) of 224 degrees C and initial degradation temperature (Td) of 441 degrees C. Moreover, the polymer is dissolvable in strong polar solvents.