Fig. 3
From: A rigid and healable polymer cross-linked by weak but abundant Zn(II)-carboxylate interactions
Thermal healing and reshaping properties of PDMS-COO-Zn polymer. a Flexural stress-strain curves of PDMS-COO-Zn before and after healing at 80 °C for different time. b Flexural stress-strain curves of PDMS-COO-Zn before and after healing at different temperature for 4 h. c Microscopic images of a film before (left) and after (right) healing at 80 °C for 4 h. Scale bar, 100 μm. d The weight-bearing test of PDMS-COO-Zn polymer after healing. e A fusilli-shaped polymer made by local heating within tens of seconds can sustain a weight of 100 g immediately. f A rigid flaky sample can be reshaped and adapted into an orthosis upon heating
