Nicotinamide-based poly(ether amide)s: a novel type of soluble thermally stable polyamides

摘要

In order to obtain a novel type of thermally stable polyamides with enhanced solubility, design and synthesis of a diamine were achieved. A nicotinamide-based dichloro compound was obtained via nucleophilic substitution reaction of 2,6-diaminopyridine with 6-chloronicotinoyl chloride. The final diamine was attained through reaction of dichloro product with 5-amino-1-hydroxynaphthalene. The obtained materials were completely characterized by common spectroscopic methods and elemental analysis. Polycondensation reaction of the diamine with different diacid chlorides led to the preparation of related nicotinamide-based poly(ether amide)s. Polymers were well characterized, and their physical and thermal properties including viscosity, solubility, thermal behavior and stability, flame retardancy, and crystallinity were studied. The polymers showed high thermal stability and flame retardancy together with enhanced solubility. Copyright (C) 2015 John Wiley & Sons, Ltd.