Costantino Creton: From the tensile curves, it looks like there is significant plasticity. I am wondering if the material becomes more elastic on the second cycle when you perform loading-unloading cycle tests. Have you tried that? If you stop before breaking the sample and go back, do you observe hysteresis?
Answer: Thank you very much for mentioning this point. Yes. The material becomes more elastic after the first mechanical cycle. For instance, Fig. S5 shows the results of five successive tensile cycles up to a maximum strain of 70%. The first loading-unloading cycle exhibits a large hysteresis as compared to the following cycles. Moreover, the second to fifth cycles are close to reversible with an almost constant hysteresis energy Uhys. For instance, for the IPN with 30 wt. % IIR-g-UAc, Uhys for the first and following cycles are 2.1 and 0.5 ± 0.1 MJ m−3,...
