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Ionically Crosslinked Gels with High Toughness

We present a novel class of ionically crosslinked gels showcasing mechanical properties akin to cartilage tissue. These materials predominantly consist of water and are formed from engineered polymers combined with soluble metal ions—specifically calcium and zinc. Their unique strength, derived from non-covalent interactions, imparts a "self-healing" quality, enabling them to endure repetitive deformation, even after partial failure. This work, supported by NSF Grant DMR-0520513, contributes to advancing soft materials in biomedical and engineering applications.

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Ionically Crosslinked Gels with High Toughness

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  1. Ionically Crosslinked Gels with High Toughness Monica Olvera, Northwestern University, DMR 0520513 We have developed a set of materials with mechanical performance similar to the mechanical properties of cartilage tissue. The materials contain water as their majority component and assemble from a combination of appropriately designed polymers and soluble metal ions such as calcium and zinc. Because the materials do not rely on the formation of irreversible covalent bonds for their strength, they have a “self-healing” character that allows them to be repetitively deformed many times, even after partial failure of the material has occurred. K. J. Henderson, T. C. Zhou, K .J. Otim, and K. R. Shull, Macromolecules43, 6193-6201 (2010) NSF Grant #DMR-0520513

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