Figure 3: Controlling rate of shapeshifting.
(a) Kinetics of shape recovery (50:50 MAAc-co-DMAA gel, 70 wt% water, Protocol 2: uniaxial extension, 
, ɛ=0.5, T=25 °C) for different programming times tp as indicated. Inset: The strain recovery curves collapse on a single curve upon time normalization t/τr. (b) Plotting rate of strain recovery versus strain (Supplementary Equation 37) allows extraction of activation volume and lifetime of the physical crosslinks (Supplementary Fig. 14) based on a ‘standard linear solid’ model (Supplementary Equations 30–40).
