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Biolignin™ based epoxy resins

Abstract : Wheat straw Biolignin™ was used as a substitute of bisphenol-A in epoxy resin. Synthesis was carried out in alkaline aqueous media using polyethyleneglycol diglycidyl ether (PEGDGE) as epoxide agent. Structural study of Biolignin™ and PEGDGE was performed by solid-state 13C NMR and gel permeation chromatography, respectively, before epoxy resin synthesis. Biolignin™ based epoxy resins were obtained with different ratios of Biolignin™ : PEGDGE and their structures were analyzed by solid-state 13C NMR. The crosslinking of PEGDGE with Biolignin™ was highlighted in this study. Properties of Biolignin™ based epoxy resins were analyzed by differential scanning calorimetry and dynamic load thermomechanical analysis as well as compared with those of a bisphenol-A epoxy-amine resin. Depending on the epoxy resin formulation, results confirmed the high potential of Biolignin™ as a biosourced polyphenol used in epoxy resin applications.
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Submitted on : Monday, December 6, 2021 - 3:00:04 PM
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Guo-Hua Delmas, Bouchra Benjelloun-Mlayah, yves Le Bigot, Michel Delmas. Biolignin™ based epoxy resins. Journal of Applied Polymer Science, Wiley, 2013, 127 (3), pp.1863-1872. ⟨10.1002/app.37921⟩. ⟨hal-03467413⟩



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