4.7 Article

Chemically fueled covalent crosslinking of polymer materials

Journal

CHEMICAL COMMUNICATIONS
Volume 55, Issue 14, Pages 2086-2089

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc09823a

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Funding

  1. National Science Foundation [DMR-1749730]
  2. U.S. Department of Energy, Office of Science, Basic Energy Sciences (BES) [DE-SC0018645]
  3. U.S. Department of Energy (DOE) [DE-SC0018645] Funding Source: U.S. Department of Energy (DOE)

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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.

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