摘要：Four new thermotropic liquid crystalline random copolyesters with ethereal linkages were prepared from mesogenic 4,4'-oxybis(benzoic acid) by direct polycondensation with different aliphatic and aromatic diols in pyridine solution. Diphenylchlorophosphate (DPCP) was employed as the condensation agent. Viscosity measurements, FT IR and 1H spectral data were used for investigating their structural features. The thermal phase transitions and thermotropic liquid crystalline (TLC) behaviour of these polymers were investigated differential scanning calorimetry (DSC)
