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Devin G. Barrett, Dominic E. Fullenkamp, Lihong He, Niels Holten-Andersen, Ka Yee C. Lee and Phillip B. Messersmith pH-Based Regulation of Hydrogel Mechanical Properties Through Mussel-Inspired Chemistry and Processing Advanced Functional Materials 23

Version of Record online: 2 OCT 2012 | DOI: 10.1002/adfm.201201922

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Novel bioinspired and tough hydrogels are designed by regulating the pH of the reaction between catechol-terminated poly(ethylene glycol) (PEG) and Fe3+. A covalently cross-linked network is fortified with a series of coordination bonds, which act as sacrificial and reversible interactions to dissipate energy during deformation. These hydrogels represent a novel class of mussel-mimetic biomaterials inspired in both content and processing.

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