A series of poly (propylene naphthalate-co-propylene 2,5-furandicarboxylate)s (PPNFs) were synthesized by the melt polycondensation method from 2,5-furandicarboxylic acid (FDCA), 2,6-naphthalenedicarboxylic acid (2,6-NDCA) and 1,3-propanediol (1,3-PDO). Their composition and sequence distribution were analyzed by ¹H NMR and ¹³C NMR. Crystallization behaviors, thermal and mechanical properties were investigated. The weight-average molecular weights of PPN, PPF and PPNFs were higher than 28 000 g mol⁻¹ and the polydispersity index was between 2.1 and 2.7. DSC and XRD results show that poly (propylene 2,5-furandicarboxylate) (PPF) and poly (propylene naphthalate) (PPN) are semi-crystalline polymers, but all PPNFs are amorphous polymers. With increasing the content of FDCA, the initial temperature of α-relaxation rose significantly. When the content of FDCA was 74 mol%, PPNF74 exhibited the high bio-based content (77.6 wt%) and good mechanical properties (σ_m = 71 MPa and ε_b = 146%).

通过熔融缩聚法，由2,5-呋喃二甲酸（FDCA），2,6-萘二甲酸（2,6-）合成了一系列聚萘二甲酸丙二酯-共丙烯2,5-呋喃二甲酸酯（PPNF）。 NDCA）和1,3-丙二醇（1,3-PDO）。通过¹ H NMR和¹³ C NMR分析它们的组成和序列分布。研究了结晶行为，热和机械性能。PPN，PPF和PPNFs的重均分子量高于28000 g mol ^-1多分散指数在2.1至2.7之间。DSC和XRD结果表明，聚（2,5-呋喃二甲酸丙二酯）（PPF）和聚（萘二甲酸丙二酯）（PPN）是半结晶聚合物，但所有PPNFs都是无定形聚合物。随着FDCA含量的增加，α-松弛的起始温度明显升高。当FDCA的含量为74摩尔％，表现出PPNF74高生物基含量（77.6重量％）和良好的机械性能（σ_米 = 71兆帕和ε _b  = 146％）。