In pursuit of poly(ethylene 2,5-furandicarboxylate) PEF materials with high molecular weight, satisfactory appearance and faster crystallization rate, its preparation from dimethyl furan-2,5-dicarboxylate (DMFD) with ethylene glycol (EG) in the trace presence of metal zinc was performed via transesterification method. Optimization of the main polymerization parameters enabled Zn-catalyzed PEF to gain high molecular weight (M_n, 5.40 × 10⁴ g mol⁻¹) and low content of diethylene glycol furandicarboxylate unit (DEGF, 2.91%). On the basis of experimental phenomena and high performance liquid chromatography (HPLC), the actual catalytic active species of metal zinc in the polymerization was speculated to be a salt of 2, 5-furandicarboxylate derivative (Zn(II)). The in-stiu catalyst can efficaciously inhibit the influence of by-product FDCA on the color of PEF, which displayed quite better appearance (close to white). Differential Scanning Calorimetry (DSC) showed that the in-stiu catalytic system acted as nucleating agent (NA) and the crystallization half-time (t_1/2) of PEFs-Zn was only 1/4 of that of PEF-tin. Additionally, series of high molecular weight furan-based polyesters from DMFD and diols with different methylene (3, 5, 6 and 8) were obtained by zinc powder as in-stiu catalyst, which further evidenced it to be efficiency and universality.

为追求高分子量，令人满意的外观和更快的结晶速度的聚（2,5-呋喃二甲酸乙二醇酯）PEF材料，在微量存在下由呋喃-2,5-二羧酸二甲酯（DMFD）和乙二醇（EG）制备通过酯交换法进行金属锌的制备。主要聚合参数的优化使得Zn催化的PEF能够获得高分子量（M _n，5.40  ×  10 ⁴  g  mol ^-1）和低含量的二乙二醇呋喃二甲酸酯单元（DEGF，2.91％）。根据实验现象和高效液相色谱法（HPLC），推测聚合反应中金属锌的实际催化活性物质为2，5-呋喃二甲酸衍生物（Zn（II））的盐。惰性催化剂可以有效地抑制副产物FDCA对PEF颜色的影响，而PEF的外观表现得更好（接近白色）。差示扫描量热法（DSC）表明，缸内催化体系起成核剂（NA）的作用，且结晶时间为半衰期（t _1/2PEFs-Zn的）仅为PEF-锡的1/4。此外，通过锌粉作为In-situ催化剂，获得了来自DMFD的一系列高分子量呋喃基聚酯和具有不同亚甲基（3、5、6和8）的二醇，这进一步证明了它的有效性和通用性。