Abstract In the present work, biodegradable polyesters were synthesized by polycondensation reactions of renewable 1,4:3,6-dianhydrohexitols (isosorbide, IS; isomannide, IM) with aliphatic dicarboxylic acid chlorides containing 4, 6 and 10 carbons (namely, C4, C6 and C10) using a non-solvent method. All polyesters showed a thermal stability up to 320 °C and the glass transition temperature varied from 0 to 68 °C. Films were prepared by hot pressing. The semi-crystalline ISC10 and IMC10 films showed good mechanical properties with Young’s modulus E = 127 ± 20 MPa, E = 125 ± 10 MPa and elongation at break e = 19 ± 5%, e = 16 ± 3%, respectively. The water sorption (liquid and vapor) of films was slow and low due to their crystalline micro-structures. The films were strongly barrier for gases with permeability coefficients PN2 = 0.09, PO2 = 0.26, PCO2 = 1.32 barrer for ISC10, and PN2 = 0.18, PO2 = 0.46, PCO2 = 2.04 barrer for IMC10. Furthermore, the high CO2 and O2 selectivity coefficients of ISC10 (αCO2/O2 = 5.1) and IMC10 (αCO2/O2 = 4.4) were favorable for the fruits and vegetables preservation. ISC10 film showed a better quality for food packaging in terms of mechanical and gas permeation properties compared to IMC10 film. A detailed discussion of the relationships between microstructures and sorption/permeation properties was conducted.

中文翻译：

---

用于食品包装的可再生 1,4:3,6-双脱水己糖醇聚酯：合成、热、机械和阻隔性能

摘要 在目前的工作中，通过可再生的 1,4:3,6-二脱水己糖醇（异山梨醇，IS；异甘露醇，IM）与含有 4、6 和 10 个碳原子（即 C4， C6 和 C10) 使用非溶剂方法。所有聚酯都表现出高达 320 °C 的热稳定性，玻璃化转变温度从 0 到 68 °C 不等。通过热压制备薄膜。半结晶 ISC10 和 IMC10 薄膜显示出良好的机械性能，杨氏模量 E = 127 ± 20 MPa、E = 125 ± 10 MPa 和断裂伸长率 e = 19 ± 5%、e = 16 ± 3%。由于其晶体微结构，薄膜的吸水（液体和蒸汽）缓慢且低。该薄膜对渗透系数为 PN2 = 0.09, PO2 = 0.26 的气体具有很强的阻隔性，对于 ISC10，PCO2 = 1.32 barrer，对于 IMC10，PN2 = 0.18，PO2 = 0.46，PCO2 = 2.04 barrer。此外，ISC10（αCO2/O2=5.1）和IMC10（αCO2/O2=4.4）的高CO2和O2选择性系数有利于果蔬保鲜。与 IMC10 薄膜相比，ISC10 薄膜在机械和气体渗透性能方面表现出更好的食品包装质量。对微观结构和吸附/渗透性能之间的关系进行了详细讨论。与 IMC10 薄膜相比，ISC10 薄膜在机械和气体渗透性能方面表现出更好的食品包装质量。对微观结构和吸附/渗透性能之间的关系进行了详细讨论。与 IMC10 薄膜相比，ISC10 薄膜在机械和气体渗透性能方面表现出更好的食品包装质量。对微观结构和吸附/渗透性能之间的关系进行了详细讨论。