Fig. 1
From: A rigid and healable polymer cross-linked by weak but abundant Zn(II)-carboxylate interactions

Preparation and characterizations of PDMS-COO-Zn polymer. a Synthesis and structure of PDMS-COO-Zn polymer. b The ITC titration data of the PDMS-COO- with ZnCl2 in anhydrous ethanol at 25 °C. c Hot compressing of the powder lead to the block sample. d Schematic structure of the polymer network at different temperatures