Lorero, IsaacRodríguez, A.Campo, MónicaGonzález Prolongo, Silvia2023-09-222023-09-222022I. Lorero, A. Rodríguez, M. Campo, S.G. Prolongo, Thermally remendable, weldable, and recyclable epoxy network crosslinked with reversible Diels-alder bonds, Polymer, Volume 259, 2022, 125334, ISSN 0032-3861, https://doi.org/10.1016/j.polymer.2022.1253341873-2291https://hdl.handle.net/10115/24473The authors acknowledge the assistance of Gilberto Del Rosario from the Technological Center Support of University Rey Juan Carlos.The development of epoxy resins through Diels-Alder crosslinking is challenging: the synthesis is complex, and the mechanical properties are hindered by the brittleness of these bonds. In this work, an epoxy/amine resin with different Diels-Alder crosslinking ratios is manufactured, achieving a simplified route that enhances both sustainability and industrial transferability. The curing temperatures are carefully studied, defining a two-step method (100 ◦C, 6 h + 60 ◦C, 12 h) that generates the thermo-reversible resins dispending the use of solvents or intermediate oligomers synthesis. Besides NMR, FTIR, and DSC characterization, the influence of Diels-Alder bonds on mechanical properties is analyzed. The addition of Diels-Alder crosslinking up to a 0.6 ratio of the stoichiometry provides an epoxy with an optimal compromise between recyclability and mechanical properties. Using this ratio, the effect of Diels-Alder crosslinking and disengagement is analyzed through DMTA and microhardness, demonstrating the network reversibility and the feasibility of this techniques to monitor its evolution.engAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/Diels-Alder resinSelf-healing epoxyReprocessable thermosetsRecyclable resinThermo-reversible crosslinkinginfo:eu-repo/semantics/article10.1016/j.polymer.2022.125334info:eu-repo/semantics/openAccess