Fig. 5: Tensile recovery properties of hydrogels and effects of ions on mechanical properties of hydrogels.
From: Stretchable slide-ring supramolecular hydrogel for flexible electronic devices
a Cyclic loading−unloading tensile curves of the Hy-α-CD/ACA-PEG20000-ACA hydrogel (ACA-PEG20000-ACA: Hy-α-CD = 1:5) at 1300% strain for three cycles (no waiting time between cycles). b Plastic strain as a function of cycle times at strain of 1100% (no waiting time between cycles, ACA-PEG20000-ACA: Hy-α-CD = 1:5). c Tensile stress−strain curves of hydrogel doped with CaCl2 compared with the hydrogel without CaCl2 (ACA-PEG20000-ACA: Hy-α-CD = 1:5). d Fracture energy of hydrogel doped with CaCl2 compared with the hydrogel without CaCl2 (ACA-PEG20000-ACA: Hy-α-CD = 1:5). (Error bars indicate the average value and certain error obtained from three experiments for every sample).
