Externally Triggered Healing of a Thermoreversible Covalent Network via Self-Limited Hysteresis Heating



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A thermally reversible polymeric network with imbedded ferromagnetic particles was synthesized via the Diels-Alder reaction. When placed in an alternating magnetic field (see figure) the material is heated in situ by the self-limiting heating behavior of ferromagnetic particles and subsequently reverts to a liquid. As a consequence, the material properties are unchanged even after ten cycles of fracture and repair.