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Chemically fueled covalent crosslinking of polymer materials
- ZhangAuthors contributed equally., Borui, Jayalath, Isuru M., Ke, Jun, Sparks, Jessica L., Hartley, C. Scott, Konkolewicz, Dominik
- Chemical communications 2019 v.55 no.14 pp. 2086-2089
- anhydrides, carboxylic acids, chemical communication, crosslinking, hydrogels, hydrolysis, polymers, storage modulus
- Transiently crosslinked dynamic polymer networks are developed, using carbodiimide hydration to link carboxylic acids as anhydrides. From aqueous polymer solutions, non-equilibrium hydrogels are transiently formed, which dissolve upon anhydride hydrolysis. The materials can be refueled using a subsequent injection of carbodiimide. The gels exhibit higher storage moduli compared to transient supramolecular gels as a result of their covalent crosslinks.