Aliphatic-sulfonated polyesters based on 2,5 FDCA, such as poly(ethylene 2,5-furandicarboxylate)-co-(ethylene sodiosulfonate succinate) or 2,5-PEF-co-PESs were prepared by a melt step-growth polymerization of 2,5-FDCA and Na-DMSS with ethylene glycol. These copolyesters were characterized by ¹H-NMR, DSC and TGA. The degree of randomness determined by ¹H-NMR is less than one, thus indicating that these copolyesters have a character to block. All copolyesters were amorphous, having glass transition temperatures decreasing with the content of ionic units. The thermal stability of 2,5-PEF-co-PESs was slightly reduced by the incorporation of these units. The liquid water sorption mechanism was also discussed as a function of the composition of the copolymer and the predominant role of the content of sulfonated groups on liquid water uptake was highlighted. Finally, oxidative degradation has again supported the role of sulfonated units, whereas hydrolytic degradation was not influenced by the concentration of sulfonated groups. By leveraging on their characteristics, 2,5-PEF-co-PESs copolyesters may be can serve as attractive and innovative bio-polymers for practical applications such as textile and membrane…

通过2,3 FDCA的熔融逐步生长聚合制备了2,5 FDCA的脂族磺化聚酯，如聚（2,5-呋喃甲酸二乙烯酯）-共-（乙二磺酸钠磺酸盐）或2,5-PEF-共PES。 2,5-FDCA和Na-DMSS与乙二醇。这些共聚酯的特征在于¹ H-NMR，DSC和TGA。随机度由¹确定1 H-NMR小于1，因此表明这些共聚酯具有嵌段特性。所有共聚酯都是无定形的，其玻璃化转变温度随离子单元的含量而降低。通过掺入这些单元，2,5-PEF-co-PES的热稳定性略有降低。还讨论了液体吸水机理与共聚物组成的关系，突出了磺化基团含量对液体吸水的主要作用。最后，氧化降解再次支持了磺化单元的作用，而水解降解不受磺化基团浓度的影响。利用它们的特性，2