Fig. 4.

a) DPPH clearance ratios of different hydrogels; b) Schematic diagram of pigskin adhesion experiment of hydrogels; c) Adhesion strength of pigskin with hydrogel; d) Hemostatic properties of gelatin sponge, OSD/CMC, OSD/CMC/Fe and OSD/CMC/Fe/PA3; e) Schematic diagram of rat liver hemorrhage model; f) Coagulation properties of gauze and hydrogels; g) Hemolytic activity test results of hydrogels; h) Hydrogel hemolytic activity test graphs; i) The cytocompatibility of these hydrogels was assessed by the viability of L929 cells in the hydrogel leachate; j) LIVE/DEAD staining of L929 cells after 24 h of leachate incubation. *P < 0.05, **P < 0.01, ***P < 0.001.