FIGURE 7.

Injectability of the hybrid hydrogel: (A) hybrid hydrogel was injected through a 21-gauge needle, (B) diagram of the apparent viscosity rheology as a function of the shear rate of the hybrid hydrogels. (C) Injection of the Gel-ADH/diBA-PEG/LAP hybrid hydrogels into the PBS buffer and the photograph of the formed hydrogel into the PBS solution (D) Gel-ADH/diBA-PEG/LAP hybrid hydrogels injected from a 21-gauge needle onto a Petri dish. Self-healing behavior of the Gel-ADH/diBA-PEG/LAP hybrid hydrogels: the hybrid hydrogel was prepared in two colors, that is, pink and blue, separately, and these two-hybrid hydrogels were allowed to make contact with each other (E) photograph of the self-healed hydrogel after 1 h, and (F) stretching behavior of the self-healing hydrogel after 1 h (G) pH-dependent decomposition−composition behavior of the hybrid hydrogels. Reprinted with permission from (Cimen et al., 2021). Copyright 2021 American Chemical Society.