writer：Lizhong Zhou, Linbo Wu*, Pengkai Qin, Bo-Geng Li.
keywords：Bio-based polymers, Biodegradable polymers, Poly(1,5-pentylene dicarboxylate)s, Long chain polyesters, Thermal property, Mechanical property, Gas barrier property
source：期刊
specific source：Polymer Degradation and Stability 187 (2021) 109546
Issue time：2021年
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 α, ω-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( ε-caprolactone) and manifest polyethylene-like rapid crystallization, good thermal stability and ductile tensile behavior. Their melting temperature, crys- tallizablity, 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.