Fig. 10

Self-removal wound dressings. A A reversible PEG-thiol-Aldehyde Addition Reaction and a Thiol-Hemithioacetal Exchange Reaction are used to make moldable and removable wound dressings, and a Thiol-Hemithioacetal Exchange Reaction is used to dissolve hydrogels. Reprinted with permission from ref [151]. Copyright 2019 American Chemical Society. B An easily removable wound dressing with supramolecular hydrogel. (a) Fabrication of supramolecular hydrogels from supramonomers and their breakdown under memantine irrigation and (b) its utilization as a wound dressing. Reprinted with permission from ref [152]. Copyright 2017 American Chemical Society. C A Michael addition reaction between dopamine, poly(ethylene glycol) diacrylate (PEGDA700), and pentaerythritol triacrylate was used to create an injectable adhesive hydrogel-based bandage (PETA). Spraying zinc ions on the dressing could quickly replace it. Reprinted with permission from ref [70]. Copyright 2020 Royal Society of Chemistry