Synergistic Crosslinking of Triglycidyl Ether of Resveratrol With Amino Acids as a Novel Pathway to Design Sustainable High‐Performance Thermosets

This study explores the use of amino acids as renewable curing agents for the synthesis of fully biobased epoxy thermosets derived from triglycidylether of resveratrol (TGER). Combining the multifunctionality of amino acids with the aromatic rigidity of resveratrol, high-performance sustainable thermosets were designed. To increase the green metrics, series of TGER/amino acid formulations were prepared and polymerized under controlled thermal conditions consistent with green chemistry principles. Differential scanning calorimetry and temperature-assisted FTIR analyses demonstrated complete functional conversion and network formation through amino ether and ester linkages while dynamic mechanical analysis revealed that the prepared thermosets show glass transition values between 115 and 250 °C and high storage moduli up to 3.6 GPa. Among the examined systems, aromatic amino acids such as tyrosine, tryptophan, and histidine produced the most rigid and performant materials. Tensile and hardness tests confirmed that the designed thermosets are tough, moderately brittle, with Shore D values up to 87. Thermogravimetric and moisture absorption analyses indicated good thermo-oxidative resistance and low water uptake for aromatic amino acid-based networks. Overall, the study underscores the feasibility of achieving high-performance, sustainable thermosets using amino acids as curing agents, supporting the transition toward fully biobased polymers.