Fig. 5

Acid resistance experiment under simulated stomach environment. In the acid solution of pH = 1 (A), the tensile strength change with the time course of the sutures of DCSS and catgut (B) (n = 5). The SEM morphology investigation of DCSS (C) (D) and catgut sutures (E) (F). G After soaking in acid solution of pH = 1 and weighing, the mass loss rate change with the time course of the sutures of DCSS and catgut (n = 3) (H)