Synthesis and properties of long chain polyesters from biobased 1,5-pentanediol and aliphatic α,ω-diacids with 10-16 carbon atoms

Several aliphatic long chain polyesters with intrinsic viscosity of 0.80-1.47 dL/g were synthesized from biobased 1,5-pentanediol and long chain alpha,omega-diacids with 10-16 carbon atoms. Their chemical structure was characterized, and thermal, mechanical and gas barrier properties were assessed. These long chain polyesters have a melting temperature higher than poly(epsilon-caprolactone) and manifest polyethylene-like rapid crystallization, good thermal stability and ductile tensile behavior. Their melting temperature, crystallizablity, tensile modulus and oxygen and water vapor barrier performance all increase with increasing the chain length of diacid. In comparison with the widely used biodegradable poly(butylene adipate-co-terephthalate) copolyester, these potentially biodegradable polyesters show comparable tensile strength, ductility and oxygen barrier performance, but obviously superior crystallizability, tensile modulus and water vapor barrier performance. (C) 2021 Elsevier Ltd. All rights reserved.

Automated summary

Several aliphatic long chain polyesters were synthesized from biobased materials, showing promising biodegradability and superior mechanical and barrier properties compared to widely used copolyesters.