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(A) Thermally driven shape-memory process of PU0, PU1, and PU2. (B) Representative SEM surface micrographs of PU2 before and after healing. (C) Photographs of consecutive thermal induced self-healing and shape-memory functions triggered in PU2, also showing the mechanical strength of this sample by lifting a 200 g weight. Adapted with permission from ref (293). Copyright 2018 John Wiley and Sons.
