An Alternative Method for Synthesis of Thermally Stable Aromatic Polyesters Containing Schiff Base Unites

Document Type: Research Paper



In this paper, an efficient method for synthesis of aromatic polyesters containing schiff base
units is described by preparation of two polyesters. These polyesters have been prepared by
the reaction of terephthaloyl dichloride on Schiff bases derived from p-hydroxybenzyldehyde
and 4,4-diamino diphenyl ether, 4,4-diamino diphenyl methane. The Polymers were
characterized by IR, CHNS, thermal analyses (TGA) and viscosities. Inherent viscosities of
polyesters were in the range of 0.28-0.31 dLg-1 and thermal stability determined by TGA in
nitrogen atmosphere.