Fig. 2
From: Self-healing hydrogel as an injectable implant: translation in brain diseases
A Schematic illustration for preparing self-healing hydrogels of HA-gallol/gallol-rich oligomeric crosslinker (OEGCG) with shear-thinning property. Reprinted with permission from [70]. Copyright © 2017 American Chemical Society. B Schematic illustration of Fmoc-dipeptide self-assembly hydrogels with shear-thinning and self-healing properties. Reprinted with permission from [71]. Copyright © 2020 American Chemical Society. C Schematic diagram of the preparation of the dual ionic crosslinking hydrogel and a possible network structure of the hydrogel. Reprinted with permission from [72]. Copyright © 2019 Springer Science Business Media, LLC, part of Springer Nature. D Scheme of electrostatic interactions between hyaluronic acid and chitosan. Reprinted with permission from [75]. Copyright © 2021 Elsevier B.V