Fully Biobased Epoxy Resins from Fatty Acids and Lignin

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Pablo OrtizWalter Eevers

Abstract

The use of renewable resources for plastic production is an imperious need for the reduction of the carbon footprint and the transition towards a circular economy. With that goal in mind, fully biobased epoxy resins have been designed and prepared by combining epoxidized linseed oil, lignin, and a biobased diamine derived from fatty acid dimers. The aromatic structures in lignin provide hardness and strength to an otherwise flexible and breakable epoxy resin. The curing of the system was investigated by infrared spectroscopy and differential scanning calorimetry (DSC). The influence of the different components on the thermo-mechanical properties of the epoxy resins was analyzed by DSC, thermal gravimetric analysis (TGA), and tensile tests. As the content of lignin in the resin increases, so does the glass transition, the Young's modulus, and the onset of thermal degradation. This correlation is non-linear, and the higher the percentage of lignin, the more pronounced the effect. All the components of the epoxy resin being commodity chemicals, the present system provides a realistic opportunity for the preparation of fully biorenewable resins at an industrial scale.

References

Oct 16, 2013·Chemical Reviews·Rémi AuvergneJean-Pierre Pascault
Nov 5, 2016·Chemical Reviews·Vincent FroidevauxBernard Boutevin
Mar 3, 2018·Journal of the American Chemical Society·Claudio GioiaLars Berglund
Jul 12, 2018·Topics in Current Chemistry·Elias FeghaliRichard Vendamme

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Citations

Jun 3, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Julia R GouveiaDemetrio J Dos Santos
Jun 27, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Chiara AllegrettiPaola D'Arrigo
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Alejandro Rodríguez, Eduardo Espinosa
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sandra CorderiKathy Elst

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Methods Mentioned

BETA
differential scanning calorimetry

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