Rheology
The rheological properties of the conductive hydrogel were analyzed
using the Discovery HR-2 rheometer (TA Instruments, UK) with a Peltier
plate. The measurements were performed at 25 °C, and the samples were
allowed to reach equilibrium temperature for 60 s prior to each
measurement. An aluminum plate-plate (20 mm, gap = 500 μm) was used and
the shear viscosity was evaluated by increasing the shear rate from 0.1
to 1000 s−1 at 25 °C.