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Synthesis and characterization of new polyesters derived from diphenols and aromatic diacids chlorides

Abstract:

A series of aromatic polyesters, were synthesized under phase transfer conditions. The copolymers were obtained in an essentially quantitative yield. These polyesters were soluble in chloroform and readily form clear, colorless films from solution. The optimum conditions of polymerization were obtained via interfacial polymerization at room temperature and with a reaction time of 4h in chloroform. All polymers were characterized by FTIR, GPC, viscosity, water contact angle, water absorption, TGA, DSC, X-ray, and NMR. The structures of the polymers were confirmed by NMR and FTIR spectroscopy. The prepared polyesters showed excellent thermal stability as measured by TGA (10% wt. loss) is moderate and ranges from 438 to 473°C in argon, glass transition temperatures are between 147 and 215 °C, water contact angles for these polymers ranged were from 74 ° to 90 °, Inherent viscosity values range obtained from 0.35 to 1.3 dL.g-1 and Mw values range from 30.5 to 159×10 3.