Oppositely charged polyelectrolytes form tough, self-healing, and rebuildable hydrogels.


A series of tough polyion complex hydrogels is synthesized by sequential homopolymerization of cationic and anionic monomers. Owing to the reversible interpolymer ionic bonding, the materials are self-healable under ambient conditions with the aid of saline solution. Furthermore, self-glued bulk hydrogels can be built from their microgels, which is… (More)
DOI: 10.1002/adma.201500140


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