A series of novel multiblock copolymers poly(hexamethylene 2,5-furandicarboxylate)-b-poly(ethylene glycol) (PHFEGs) were synthesized from available biobased 2,5-furandicarboxylic acid (FDCA), 1,6-hexanediol (HD), and poly(ethylene glycol) (PEG) by a two-step melt polycondensation method. A systematic investigation of microstructure, molecular weight and its distribution, crystallization behavior, thermal stability of PHFEGs was performed using ¹H NMR, GPC, DSC, and TGA, respectively. Moreover, effects of composition on mechanical and shape memory properties of PHFEGs were investigated systematically. Results showed that the weight percentage of PEG in PHFEGs was consistent with that in feed. DSC data showed most PHFEGs were double-crystalline block copolymers. All PHFEGs exhibited the excellent thermal stability. In summary, compared with PHF, the addition of PEG toughened PHF to the extent and endowed the double-crystalline block copolymers with excellent shape-memory ability, suggesting PHFEGs with excellent shape-memory properties have great potential in application.

从可用的生物基2,5-呋喃二甲酸（FDCA），1,6-己二醇（HD）合成了一系列新型的多嵌段共聚物聚（己二酸2,5-呋喃二甲酸酯）-b-聚乙二醇（PHFEG），通过两步熔融缩聚法制得的聚乙二醇（PEG）。使用¹对PHFEG的微观结构，分子量及其分布，结晶行为和热稳定性进行了系统研究1 H NMR，GPC，DSC和TGA。此外，系统地研究了组成对PHFEGs的力学性能和形状记忆性能的影响。结果表明，PHFEG中PEG的重量百分比与饲料中的重量百分比一致。DSC数据显示大多数PHFEG是双晶嵌段共聚物。所有PHFEG均表现出出色的热稳定性。综上所述，与PHF相比，加入PEG使PHF增韧到一定程度，赋予双晶嵌段共聚物优异的形状记忆能力，表明具有优异形状记忆性能的PHFEG具有广阔的应用前景。