Enzymatic synthesis of bio-based polyesters derived from vanillin
Cicely M. Warne, Maria Jose Calandri, Myleidi Vera, Georg M. Guebitz, Alessandro Pellis
TL;DR
This paper explores the enzymatic synthesis of bio-based polyesters from vanillin, a renewable resource, aiming to replace fossil-based materials.
Contribution
The study introduces a vanillin-derived bio-based diol and evaluates enzymatic polycondensation with various diesters and solvents.
Findings
Vanillin-derived diol was synthesized using less toxic reagents.
Polyesters with higher molecular weights were obtained using shorter-chain diesters and para-substituted aromatic monomers.
Anisole emerged as a viable green solvent alternative to diphenyl ether.
Abstract
Aromatic polymers are known for their thermal stability as well as their good mechanical properties, but most of these polymers are synthesised from fossil resources. Vanillin is one of the few aromatic chemicals that is currently commercially produced from biomass and can be derivatised to make it suitable for polycondensation reactions. In this work a vanillin-derived bio-based diol was synthesised exploiting the potential of more benign reagents to replace toxic dimethylformamide. The resulting monomer was utilised in a series of enzymatic polycondensation reactions with different diesters including dimethyl succinate (DMSu), dimethyl adipate and dimethyl sebacate (DMSe), and the aromatic monomers diethyl terephthalate diethyl isophthalate diethyl pyridine-2,5-dicarboxylate (PD25) and diethyl pyridine-2,4-dicarboxylate (PD24) using a lipase to produce semi-aromatic polyesters. The…
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Taxonomy
TopicsBiochemical and biochemical processes · biodegradable polymer synthesis and properties · Catalysis for Biomass Conversion