Journal
POLYMER DEGRADATION AND STABILITY
Volume 187, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2021.109546
Keywords
Bio-based polymers; Biodegradable polymers; Poly(1,5-pentylene dicarboxylate)s; Long chain polyesters; Thermal property; Mechanical property; Gas barrier property
Categories
Funding
- National Key Research and Development Program [2016YFB0302402]
- National Natural Science Foundation of China [51773177]
- State Key Laboratory of Chemical Engineering [SKL-ChE-18D02]
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Several aliphatic long chain polyesters were synthesized from biobased materials, showing promising biodegradability and superior mechanical and barrier properties compared to widely used copolyesters.
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.
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