SYNTHESIS AND CHARACTERIZATION OF ALIPHATIC-AROMATIC POLY(ETHER AMIDE)S

Four aromatic diamines containing aliphatic spacers and meta and para oriented oxyphenylene rings, and their corresponding hydrochlorides, w ere combined with isophthaloyl chloride (IPC) and terephthaloyl chlori de (TPC) to give high molecular weight polyamides by interfacial and l ow-temperature solution methods. The synthesis and characterization of monomers and polymers are reported, and the differences observed in p olycondensation yields, molecular weights and molecular weight distrib utions, as a function of the method of synthesis, are discussed. Value s of number-average molecular weight ((M) over bar(n)) up to 8 x 10(4) g/mol and weight-average molecular weight ((M) over bar w) up to 1 x 10(5) g/mol could be measured by gel permeation chromatography using a romatic polyamide standards, and values of (M) over bar(n), up to 2 x 10(5) g/mol and (M) over bar(w) up to 3.6 x 10(5) g/mol by using polys tyrene standards.