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, were combined with isophthaloyl chloride (IPC) and terephthaloyl chloride (TPC) to give high molecular weight polyamides by interfacial and low‐temperature solution methods. The synthesis and characterization of monomers and polymers are reported, and the differences observed in polycondensation yields, molecular weights and molecular weight distributions, as a function of the method of synthesis, are discussed. Values of number‐average molecular weight (M̄n) up to 8 × 104 g/mol and weight‐average molecular weight (M̄w) up to 1 × 105 g/mol could be measured by gel permeation chromatography using aromatic polyamide standards, and values of M̄n up to 2 × 105 g/mol and M̄w up to 3.6 × 105 g/mol by using polystyrene standards.