This invention discloses a method for preparing recyclable, anti-swelling hydrogels based on synergistic hydrophobicity and the Hofmeister effect, belonging to the technical field of
polymer functional materials and flexible electronic devices. The preparation method of the recyclable, anti-swelling hydrogel of this invention includes the following steps: dissolving a hydrophobically modified
polymer in an
organic solvent to obtain a
polymer solution, then adding an amine compound to obtain a mixture, and performing gelation treatment to obtain a gel precursor; immersing the gel precursor in an
aqueous solution containing salt ions for
salting-out enhancement treatment to obtain the recyclable, anti-swelling hydrogel. This method, through molecular design, stably introduces specific salt ions (CO3-) into the hydrophobically modified
polymer network. 2‑ SO4 2‑ By utilizing the synergistic enhancement effect of hydrophobic interactions and the Hofmeister
salting-out effect, a dense composite
network structure full of dynamic physical cross-links was successfully constructed.