2017
DOI: 10.1002/adma.201604743
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Strong, Tough, Stretchable, and Self‐Adhesive Hydrogels from Intrinsically Unstructured Proteins

Abstract: Strong, tough, stretchable, and self-adhesive hydrogels are designed with intrinsically unstructured proteins. The extraordinary mechanical properties exhibited by these materials are enabled by an integration of toughening mechanisms that maintain high elasticity and dissipate mechanical energy within the protein networks.

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Cited by 138 publications
(120 citation statements)
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“…Multiple cross-linking mechanisms, often involving physical entanglement and chemical bonding of two types of polymer chains, have been combined to achieve hydrogels with superior toughness and high fracture energy (41, 5356). A highly stretchable and tough hydrogel was synthesized by mixing alginate, ionically cross-linked by Ca 2+ , and covalently cross-linked long-chain polyacrylamide (PAAm).…”
Section: Tuning the Strengthmentioning
confidence: 99%
“…Multiple cross-linking mechanisms, often involving physical entanglement and chemical bonding of two types of polymer chains, have been combined to achieve hydrogels with superior toughness and high fracture energy (41, 5356). A highly stretchable and tough hydrogel was synthesized by mixing alginate, ionically cross-linked by Ca 2+ , and covalently cross-linked long-chain polyacrylamide (PAAm).…”
Section: Tuning the Strengthmentioning
confidence: 99%
“…The adhesive strength and extensibility of the FT hydrogel adhesives were examined by performing lap shear measurements using a universal test machine ( Figure a,b and Video S2, Supporting Information) . Fresh porcine skin tissues were selected as representative substrates, which were tested under moist conditions.…”
mentioning
confidence: 99%
“…The hydration overlayer either prevents the formation of molecular bridges between the adhesive and applied surfaces, or induces swelling stress that leads to the failure of adhesion . To overcome these challenges, underwater adhesive hydrogels based on proteins, synthetic polymers, and biomolecules (i.e., catechol derivatives), have recently been developed recently. These materials can undergo in situ gelation/crosslinking reactions at the interfaces, or form specific interactions with some functional substrates, to generate strong underwater adhesion.…”
Section: Introductionmentioning
confidence: 99%