Design and synthesis of biobased epoxy thermosets from biorenewable resources

Camille François (1) , Sylvie Pourchet (1) , Gilles Boni (1) , Sari Rautiainen (2) , Joseph Samec (2) , Lucie Fournier (3) , Carine Robert (3) , Christophe M. Thomas (3) , Stéphane Fontaine (4) , Yves Gaillard (5) , Vincent Placet (5) , Laurent Plasseraud (1)

1 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]
2 Department of Organic Chemistry, Stockholm University
3 ENSCP - Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL
4 DRIVE - Département de Recherche en Ingéniérie des Véhicules pour l'Environnement
5 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

Biobased diepoxy synthons derived from isoeugenol, eugenol or resorcinol (DGE-isoEu, DGE-Eu and DGER, respectively) have been used as epoxy monomers in replacement of the diglycidyl ether of bisphenol A (DGEBA). Their curing with six different biobased anhydride hardeners leads to fully biobased epoxy thermosets. These materials exhibit interesting thermal and mechanical properties comparable to those obtained with conventional petrosourced DGEBA-based epoxy resins cured in similar conditions. In particular, a high Tg in the range of 90–130 °C and instantaneous moduli higher than 4.3 GPa have been recorded. These good performances are very encouraging, making these new fully biobased epoxy thermosets compatible with the usual structural application of epoxy materials.

Mots clés: Biobased resins; DEGBA alternative; Epoxy-anhydride thermosets; Curing process; Nanoindentation

Domaines: Chimie

Camille François, Sylvie Pourchet, Gilles Boni, Sari Rautiainen, Joseph Samec, et al.. Design and synthesis of biobased epoxy thermosets from biorenewable resources. Comptes Rendus. Chimie, 2017, 20 (11-12), pp.1006 - 1016. ⟨10.1016/j.crci.2017.10.005⟩. ⟨hal-01680223⟩