SYNTHESIS AND CHARACTERIZATION OF POLY(AMIDE SULFONAMIDE)S (PASAS)

New diamino monomers IIa-IIg were synthesized in a two-step reaction sequence starting from p-acetamidobenzenesulfonyl chloride. Solution polymerization of these monomers in DMAC with terephthaloyl or isophthaloyl chloride resulted in the formation of a series of 14 poly(amide sulfonamide)s (PASAs) in excellent yield (>95%). The polymers have intrinsic viscosities of 0.32-1.11 dL g(-1). Except for polymers IIIa-p and IIId-p, all other PASAs were readily soluble in aprotic polar solvents including DMAC, DMF, and DMSO. Thermogravimetric analyses of the polymers showed moderate thermal stability with 10% weight loss being recorded in the range of 325-408 degrees C. In addition, these polymers exhibit moderate chemical stabilities toward alkali, acidic, and chromic acid solution. (C) 1995 John Wiley & Sons, Inc.