High water content clay-nanocomposite hydrogels incorporating guanidinium-pendant methacrylamide: Tuning of mechanical and swelling properties by supramolecular approach
0 wt %), a self‐standing hydrogel with satisfactory mechanical toughness and elasticity results, despite its highwatercontent (95–98 wt %). The mechanicalproperties and swelling behaviors of the hydrogels can be tuned by the amount of the guanidinium‐pendant acrylamide. A systematic study indicates that the ion pairs, formed between the guanidinium groups in the polymer chains and the oxyanions