Abstract A series of aromatic-aliphatic poly(propylene succinate-co-furandicarboxylate) (PPSF) copolyesters, with compositions varied over the whole range from that of poly(propylene succinate) (PPS) to poly(propylene furandicarboxylate) (PPF), were synthesized by transesterification and melt polycondensation. 1H NMR study suggested the random segment distribution of PPSF. The copolymer showed slower crystallization rate than that of terephthalate based copolyesters, as indicated by DSC tests. PPSFs with low furandicarboxylate molar content (mPF) (from 10% to 50%) were soft and elastic due to their poor crystallization ability and low Tg. In contrast, they owned relatively high elastic modulus, tensile strength and excellent barrier properties with high mPF (from 60% to 90%). Annealing treatment could speed up the crystallization of PF units and increase the elastic modulus and tensile strength of PPSFs. The chemical composition of the copolymer strongly influenced its permeability to CO2 and O2, and PPSF owned better CO2, O2 and H2O barrier properties than commercial PBAT and PLA. Furthermore, enzymatic degradation study suggested that copolymers with mPF up to 60 mol% could be degraded and PPSF became easier to degrade with the increasing content of succinate units (mPS).

中文翻译：

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全生物基聚（琥珀酸丙酯-共-呋喃二甲酸丙酯）共聚酯，具有适合绿色包装应用的适当机械、降解和阻隔性能

摘要 一系列芳香族-脂肪族聚（琥珀酸丙二醇酯-呋喃二甲酸丙酯）（PPSF）共聚酯，其组成范围从聚（琥珀酸丙二醇酯）（PPS）到聚（丙二醇呋喃二甲酸酯）（PPF）。通过酯交换和熔融缩聚合成。1 H NMR 研究表明PPSF 的随机片段分布。DSC 测试表明，该共聚物显示出比基于对苯二甲酸酯的共聚酯更慢的结晶速率。具有低呋喃二甲酸摩尔含量 (mPF)（10% 至 50%）的 PPSF 由于结晶能力差和 Tg 低而柔软且富有弹性。相比之下，它们具有相对较高的弹性模量、拉伸强度和优异的阻隔性能以及高 mPF（从 60% 到 90%）。退火处理可以加速PF单元的结晶，提高PPSFs的弹性模量和拉伸强度。共聚物的化学成分强烈影响其对 CO2 和 O2 的渗透性，PPSF 比商业 PBAT 和 PLA 具有更好的 CO2、O2 和 H2O 阻隔性能。此外，酶促降解研究表明，随着琥珀酸单元 (mPS) 含量的增加，mPF 高达 60 mol% 的共聚物可以被降解，PPSF 变得更容易降解。