Copolyesters are one of the most important class of polymers with repeating carboxylate group in their backbone. In the present work, copolyesters based on isophthaloyl chloride with aromatic diols were synthesized by solution polycondensation method . A copolyester was synthesized using 1,4- Napthalenediol as one of the diols with isophthaloyl chloride as Diacid chloride. Quinol was used as another diols for the synthesis of random copolymer. The obtained polymer (P9NIQ) was identified and confirmed by various spectral studies like FTIR, NMR and UV spectroscopy. The thermal stability of the polymer was studied by TGA and DSC. The texture morphology and crystallinity of the polymer was monitored using SEM and XRD. Elemental analysis further confirms the formations for the copolymer. Results of the investigation confirm a relatively new entry copolymer in the family of liquid crystalline copolymers.
