Figure 4

(a) Time-dependent change for the cut on the surface of PBZ-SA2 film, (b) storage modulus of PBZ-SA2 after the damage-healing cycle, (c) an illustration of the self-healing process for the PBZ-SA thermoset.
(a) Time-dependent change for the cut on the surface of PBZ-SA2 film, (b) storage modulus of PBZ-SA2 after the damage-healing cycle, (c) an illustration of the self-healing process for the PBZ-SA thermoset.