Synthesis and properties of novel aromatic polyamides based on 4-aryl-2,6-bis(4-chlorocarbonylphenyl) pyridines

A facile synthesis of three new diacid chlorides containing pyridine ring bearing aromatic type pendant groups on its 4-position is described. The monomers were characterized by FTIR, 1HNMR, mass spectroscopies and elemental analysis. Polycondensation reactions of the prepared diacid chlorides with different commercially available diamines resulted in the preparation of novel polyamides. Optimal conditions for polyamidations were obtained via study of the model compounds. The polymers were characterized by FTIR, 1HNMR, and elemental analysis and their physical properties including solution viscosity, solubility properties, thermal stability and thermal behavior were studied as well. The polyamides show excellent thermal stability and solubility in polar aprotic solvents.