Fig. 1.

Physical characterization of the double adhesive hydrogel. A-B) FTIR spectra of DEX, ODEX, BG and AB; C) SEM images of AB; D) Particle size analysis of AB; E) FTIR spectra of H and A-H; F) 1H NMR of A, H, and A-H; G-I) Swelling test, mechanical test, and weight loss analysis of A-H, A-H + AB, and A-H + AB-O (n = 3); J) ions release behavior of the A-H + AB-O hydrogels (n = 3); K) interior SEM images of A-H,A-H + AB,A-H + AB-O; L) digital images of adhesion between the hydrogel and rat's femur (Plastic ring was 1.01 g, rat's femur was 0.83 g).