Extended Data Fig. 8: The generality of the PTPC reaction for constructing strong and tough hydrogels.
a, b, Experimental comparison of the toughness of the hydrogels comprising various linear polymers (tetra-armed poly(propylene glycol)-block-PEG (PPG-PEG), polyacrylamide (PAAm), poly(N,N-dimethylacrylamide acrylamide) (PDMAAm), polyacrylic acid (PAA), or poly(hydroxyethyl acrylate) (PHEA)) as the soft phase and HAMA as the hard phase (a); or hydrogels comprising PAAm as the soft phase and various polysaccharides (gellan gum, chitosan, alginate, carboxymethyl cellulose, or chondroitin sulfate) as the hard phase (b). In the plots, ‘MA’ and ‘NB’ indicate hydrogels fabricated with conventional radical polymerization and our PTPC reaction, respectively. The weight ratio of the soft phase to the hard phase was 15 to 1 ~ 2. Water content was 85 ± 1.5 wt%. Figure 4g and 4h follow the same settings listed above. Data in a and b are presented as mean values ± s.d. (n = 3).
