fig7
![Zwitterionic hydrogels and their biomedical applications: a review](https://image.oaes.cc/e5c927e2-0cf9-4a49-9ed5-851d2f6e14b9/cs3050.fig.7.jpg)
Figure 7. (A) The zwitterionic polyCBMA hydrogel deformed under a tiny pressure and generates ions in a pure water system with no additional mobile ions. Reproduced with permission from[114]. Copyright 2023, Springer Nature; (B) A plant-inspired zwitterionic hydrogel was prepared through rapid UV initiation in the existence of cellulose nanocrystals as a physical crosslinker and reinforcing agent. Reproduced with permission from[25]. Copyright 2019, American Chemical Society; (C) High mechanical properties of zwitterionic hydrogel with multi-molecule cooperation. Reproduced with permission from[115]. Copyright 2022, Elsevier; (D) The strong tough PA hydrogel via the synergy of ionic and metal-ligand bonds. Reproduced with permission from[117]. Copyright 2021, Wiley-VCH. GmbH. SBMA: Sulfobetaine methacrylate; AA: acrylic acid; CBMA: carboxybetaine methacrylate; PA: polyampholyte.