Abstract
Polyesters and poly(ester-imide)s have been synthesized by polycondensation reaction of terephthaloyl bis-(4-oxybenzoyl-chloride) with a mixture of 1,12-dodecanediol and various aromatic bisphenol containing phosphorous taken in different ratios. The chemical structure of the polymers has been confirmed by FT-IR and H-1 NMR spectroscopy. The thermal stability and char yield at high temperature have been evaluated by TGA. The mesomorphic properties have been investigated by differential scanning calorimetry, polarized light microscopy, and X-ray diffraction measurements.