Synthesis, characterization and biodegradable studies of 1,3-propanediol based polyesters

摘要: Abstract A series of biodegradable polyesters were synthesized from dicarboxylic acids and 1,3-propanediol catalyzed by transestrification polycondensation reaction in the bulk. The structure, average molecular weights physical properties resulting aliphatic characterized 1 H NMR, FT-IR, solution viscosity, GPC, DSC TGA. Homopolyesters show higher degree crystallinity, melting thermal stability comparison to copolyesters. biodegradability was determined monitoring normalized weight loss polyester films with time phosphate buffer (pH 7.2) without Rhizopus delemar lipase at 37 °C. rate enzymatic degradation homopolyesters follows path PPSu > PPAd > PPSe. PPSe did not significant presence enzyme which may be due its highest crystallinity point compared PPSu, PPAd In soil burial sample showed severe surface attack microorganism.