Herein, two fully renewable copolyester series, namely poly(pentylene 2,5-furandicarboxylate-co-caprolactone) (PPeCFs) and poly(hexamethylene 2,5-furandicarboxylate-co-caprolactone) (PHeCFs) were successfully synthesized with combining ε-caprolactone (CL) with poly(pentylene 2,5-furandicarboxylate) (PPeF) and poly(hexamethylene 2,5-furan dicarboxylate) (PHeF) with different molar ratios. These materials, with a CL content ranging from 10 to 50 mol%, were synthesized for first time using stannous octoate as catalyst via ring opening polymerization (ROP). Their chemical structures and molar composition were evaluated by ¹H NMR, ¹³C NMR and FTIR spectroscopies, while their thermal properties were investigated in detail using Fast Scanning Calorimetry (FSC), Differential scanning calorimetry (DSC) and Thermogravimetric analysis (TGA). The obtained results, in combination with Wide-Angle-X-ray diffractometry (WAXD), showed that copolymerization of CL with PHeF and PPeF led to semi-crystalline and partially amorphous copolyesters respectively, providing the basis for significant thermal properties enhancement with respect to the polycaprolactone (PCL) homopolymer, and therefore a much wider range of melting points (T_m) and glass transition temperatures (T_g) were obtained. TGA of the new copolymers showed excellent thermal stability, exceeding 310 °C and 360 °C for PHeCFs and PPeCFs respectively, while their decomposition mechanism was evaluated by pyrolysis-gas chromatography/mass spectroscopy (Py-GC/MS). Almost all copolyesters and mainly the ones with 40 and 50 mol% CL content showed accelerated enzymatic hydrolysis rate.

在此，通过结合ε-己内酯成功地合成了两个完全可再生的共聚酯系列，即聚（戊二烯2,5-呋喃二甲酸-共己内酯）（PPeCFs）和聚（2,5-呋喃二甲酸己二酯-共己内酯）（PHeCFs） （CL）具有不同摩尔比的聚（戊二酸2,5-呋喃二甲酸酯）（PPeF）和聚（2,5-呋喃二甲酸六亚甲基酯）（PHeF）。通过开环聚合（ROP），使用辛酸亚锡作为催化剂首次合成CL含量为10至50 mol％的这些材料。其化学结构和摩尔组成通过¹ H NMR评估，¹³使用快速扫描量热法（FSC），差示扫描量热法（DSC）和热重分析（TGA）对13 C NMR和FTIR光谱进行了详细研究。结合广角X射线衍射法（WAXD）获得的结果表明，CL与PHeF和PPeF的共聚分别导致半结晶和部分非晶态共聚酯，为显着提高热性能提供了基础聚己内酯（PCL）均聚物，因此熔点（T _m）和玻璃化转变温度（T _g）。新型共聚物的TGA表现出优异的热稳定性，对PHeCFs和PPeCFs分别超过310°C和360°C，同时通过热解-气相色谱/质谱（Py-GC / MS）评估了它们的分解机理。几乎所有共聚酯和主要是CL含量为40和50 mol％的共聚酯均显示出加速的酶水解速率。