Figure 4.

Adhesive Properties of Q-hydrogel

(A) Q-hydrogel sticking to different surfaces.

(B) Adhesive strength of Q-hydrogel on pork skin after 50 cycles of adhesion-peeling.

(C) Repeated adhesion-peeling of Q-hydrogel on author's skin. No residue or irritation of the skin was found after 50 cycles of adhesion-peeling.

(D) Adhesion energy of Q-hydrogel/pork skin after treatment of Q-hydrogel with different concentrations of H₂O₂ (error bar means the standard deviation).

(E) Adhesion energy of Q-hydrogel/porcine skin after different storage times. The hydrogel was stored in a sealed environment at room temperature (21°C).