Most hydrogels have poor mechanical properties, severely limiting their scope of applications. Here a hybrid hydrogel, consisting of hydrophilic and crystalline polymer networks, achieves an elastic modulus of 5 MPa, a strength of 2.5 MPa, and a fracture energy of 14 000 J m−2, while maintaining physical integrity in concentrated electrolyte solutions.
J. Li, Z. Suo and J. J. Vlassak, J. Mater. Chem. B, 2014, 2, 6708 DOI: 10.1039/C4TB01194E
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