fig4

Figure 4. Extremotolerance of cellulose/PVDF GGs. (A) Evaluation of the effect of low (-20 °C), ambient (25 °C), and high (80 °C) temperatures on the cellulose/PVDF GGs. (B) Variation in the weight fractions of the (1/2)% cellulose/PVDF gel during long-term (7 d) exposure to air at -20, 25, and 80 °C and corresponding (C) tensile stress-strain and (D) compressive stress-strain curves. (E) Cyclic compression of the (1/2)% cellulose/PVDF gel at 25 °C with a strain rate of ~830% min^-1 (0.277 mm s^-1).