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. 2021 May 18;12:2916. doi: 10.1038/s41467-021-23204-x

Fig. 2. Mechanical properties of artifical muscle material.

Fig. 2

a The FTIR spectra of EPDM/lignin composites with different content of ZDMA (a.u. means absorbance unit). b The engineering stress–strain curves of EPDM/lignin composites with different content of ZDMA. c The engineering stress–strain curves of EPDM composites after mechanical training for 250 cycles at the stretching speed of 200 mm/min under different training strain. d The tensile stress–strain curve of L40Z12@600% after mechanical training for 250 cycles at 600% strain. Source Data for Fig. 2a–d are available as an associated article file.