Figure 4.

Self-healing of the C-PU-PTMEGs. (a) Schematic illustration of self-healing process through a variety of hydrogen bond interactions and a dynamics of molecular chain segments for C-PU-PTMEGs. (b) Digital photographs of C-PU-PTMEGs healing in air and PBS for 5 h at 37°C temperature after being cut into two pieces. (c) Dependency of self-healing efficiency of C-PU-PTMEGs on time at 37°C. Tensile stress-strain curve of the original and self-healing (d) C-PU-PTMEG (0.65 K), (e) C-PU-PTMEG (1 K), and (f) C-PU-PTMEG (2 K) after different healing times at a 37°C temperature in PBS.