Fully Biobased Epoxy Resins from Fatty Acids and Lignin

Springer Science and Business Media LLC - Tập 25 Số 5 - Trang 1158
Pablo Ortiz1,2, Richard Vendamme1,2, Walter Eevers3,2
1Biorizon, Auvergnedijk 2, 4612 PZ Bergen op Zoom, The Netherlands
2Flemish Institute for Technological Research–VITO, Separation & Conversion Technology, Boeretang 200, 2400 Mol, Belgium
3Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium

Tóm tắt

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.

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Springer Science and Business Media LLC

Tập 25 Số 5

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