Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01523-5/MediaObjects/12951_2022_1523_Fig2_HTML.png)
a Display of the macroscopic self-healing performance of RPC/PB-0.5 hydrogel. b Repair efficiency of RPC/PB-0.5 hydrogel. c Strain-dependent rheology measurement of the RPC/PB hydrogels with the strain sweeping from 1 to 200% at an angular frequency of 10Â rad/s. d Tixotropic experiment during the cyclic strain changes between 1% strain and 200% strain of RPC/PB-0.5 hydrogel. e Influences of urea and glucose on repair efficiency of RPC/PB-0.5 hydrogel. f Schematic diagram of hydrogel repair mechanism