Synthesis and Characterization of Poly(oxy-2,6-naphthalenediylcarbonyl)

The synthesis of oligomeric and high molecular weight polyesters of 6-hydroxy-2-naphthoic acid in therminol is described. The polyesters are characterized by X-ray, DSC, TMA, light microscopy, and SEM. Close analogies are found to exist between the polycondensation reaction, thermal transitions, and solid-state structures of poly(oxy-2,6-naphthalenediylcarbonyl) and poly(oxy-p-phenylenecarbonyl). The composition versus Tc→ndiagram for the copolyesters of 6-hydroxy-2-napthoic acid and 4-hydroxybenzoic acid is described. © 1989, American Chemical Society. All rights reserved.