Multi-stimuli responsive hydrogels are synthesized by using self-assembled nanomicelles of Pluronic F127 diacrylate triblock copolymer as non-covalent macrocrosslinkers to in situ copolymerize with acrylamide and methyl chloride quarternized N,N-dimethylamino
ethylacrylate monomers, generating positively charged hydrogels. These hydrogels showed high strength, toughness, and outstanding fatigue resistance, and are reversibly responsive to changes in pH and ionic strength.

Chemical Communications, 2015, DOI: 10.1039/C4CC10094H

http://pubs.rsc.org/en/Content/ArticleLanding/2015/CC/C4CC10094H