In January 2019, scientists at the University of Groningen, in the Netherlands, published a study on the application of enzymatic polymerization techniques in the preparation of sustainable furan-based copolyesters. With increased content of aromatic units, two different synthetic approaches are introduced in the article. Financially supported by the Indonesian Endowment Fund for Education, the study provides the necessary background to design sustainable, high-performance polymers that can provide an alternative to plastics made from polyethylene terephthalate (PET). PET, which is a petroleum-based material used in plastics, is able to keep the fizz in drink bottles because of its barrier properties. The new furan-based copolyesters have been discovered to have the same barrier-like properties, providing an opportunity for the conversion of renewable sources into polymeric materials.