Fig. 3: Evaluation of adhesive ability.
From: Mussel-inspired thermo-switchable underwater adhesive based on a Janus hydrogel
a Representative underwater adhesion strength curves of the hydrogel on glass plates (1 × 1 cm2) at 40 and 25 °C. The inset image is a magnified adhesion curve at 25 °C. b Slopes during the peeling tests shown in a of the TSA hydrogel at 25 °C (blue) and 40 °C (red). c Mechanical strength of the bulk hydrogel at 25 °C (blue) and 40 °C (red). d Underwater adhesion to glass plates with a 100 g weight. e Repeatability of the underwater adhesion of the hydrogel to glass plates with changes in temperature. f Effects of different salt concentrations (Dulbecco’s phosphate-buffered saline) on the adhesion strength. g Adhesion strength of the hydrogel to glass, Ti, Al, and polytetrafluoroethylene (PTFE) plates at 25 °C (blue) and 40 °C (red). h Comparison of the adhesion strengths of reported thermoresponsive hydrogels at low and high temperatures. The inserted numbers indicate refs. 42,43,57,59,61.
