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Heat induced self-healing can be performed in reversible or dynamic chemical bonds, such as DA reaction, radical based systems or supramolecular interactions: ionic interactions, halogen or hydrogen bonds, metal–ligand interactions, π–π interactions or host-guest interactions [29].

The DA reaction is the most commonly used mechanism when it comes to thermo-reversible self-healing based on covalent bonds [30, 31]. Authors describe the healing process in four steps: a) the material is heated up to break the DA bonds, b) part of thermal energy becomes in kinetic energy that increases the mobility of chains, promoting the filling of the voids; c) cool the sample, allowing the formation of DA bonds; and d) the mechanical properties of the material are recovered.