Snthesis,Chemical and Thermal Characterization of Poly(cis-2-butenylene oxalate)

摘要

A non-teminated,low moecular weight,highly crystalline,linear aliphatic polyester was successfully synthesized via ester-interchange polycondensation of cis-2-butene-1,4-diol and diethyl oxalate by using of lead(II)oxide as the catalyst.No decarboxylation occurred during the optimized polymerization.Structural and Chemical identification was per-formed by elemental analysis,FTIR,~1H-NMR,and Mass spectroscopy.Some macrocycle species were detected in the product,according to GPC.Fragmentation patterns were suggested for the main m/e's of the mass spectrum.Thermal characterization was performed by DSC and TGA.It was found that the overall thermal stability of the polyester is higher than that of the corresponding homologous polyesters.