Figure 2.
Physicochemical characterization and adhesion properties of injectable microsphere-based hydrogels. (A) Schematic diagram of the device for the preparation of injectable hydrogels. (B) Shear thinning property test. (C) Injection force of the hydrogel through a 20 G needle at a rate of 2 mL min-1 (n = 3). (D) The thermogravimetric analysis (TGA) curves. (E) Oscillatory strain scan at a constant angular frequency of 10 rad s-1. (F) Temperature stability test. (G) Schematic diagram of the device for lap-shear adhesion test (glass slide). (H) Adhesion of GM-Lap@PDAII hydrogel to the surface of different organ tissues. (I) Adhesion strength of GM-Lap@PDA hydrogels to glass slides (n = 4). (J) Schematic diagram of the device for lap-shear adhesion test (porcine skin). (K) The adhesion strength-time curve of GM-Lap@PDAII hydrogel to porcine skin in different environments. (L) Adhesion strength of GM-Lap@PDA hydrogels to porcine skin (n = 4). **p < 0.01, ***p < 0.001, and ns indicates no significant difference between groups.
