Fig. 4.

The degradation rate of the synthesized vascular grafts over 60 days. (A) Weight loss percentage in PBS at 37 °C on a logarithmic scale, which was revealed to be linear degradation. (B) Weight loss percentage of grafts in the first 4 days of degradation test in PBS at 37 °C. (C) Weight loss rates of grafts during enzymatic degradation in vitro. (D) Representative SEM micrographs of the vascular grafts degradation after 60 days incubation in PBS at 37 °C (E) pH value versus incubation time. Gray box indication of the normal physiological level (pH between 7.35 and 7.45).