One of the materials that present special potential as biobased alternatives for TPA-based polymers such as poly(ethylene terephthalate) (PET) or poly(butylene terephthalate) (PBT) are poly(ethylene furanoate) (PEF) and poly(butylene furanoate) (PBF), whereas PEF is already produced at pilot scale and used in commercial applications as packaging material for soft drinks, films, and fibers. These semicrystalline engineering thermoplastics exhibit similar and even better mechanical properties, increased chemical and thermal stability, electrical insulation, excellent barrier properties, and higher ability of polymer chain orientation compared to its TPA-based analogs. For example, Papageorgiou et al. analyzed in detail the phase transitions and crystal structure of 2,5-FDCAbased and TPA-based polyesters. The obtained results suggest that barrier properties against oxygen, carbon dioxide, and water vapor were significantly improved in the case of 2,5-FDCA analog compared to PET, which means that these materials could be suitable for food packaging applications.