New ultrastiff bio-furan epoxy networks with high Tg: facile synthesis to excellent properties

Abstract Novel resins were synthesized from diglycidyl ester of 2,5-furandicarboxylic acid (DGF) and 3,3'-diamino diphenylsulfone (33DDS) and 4,4'-diamino diphenyl-sulfone (44DDS), respectively. The networks possessed ultra high stiffness (E'= 4.02 GPa) and the highest Tg (216 oC) in biomass-based epoxy resins to date, which allows their potential applications in many cutting-edge areas.