Abstract
An inexpensive one-pot route to self-healing hydrogels with pH-tunable modulus is presented. Hydrogels were formed by reacting tannic acid, trivalent metal ions and polyallylamine. Below pH 8 the hydrogels were supramolecular while above, covalent cross-linking strengthened the hydrogels. From concentrated mixtures, threads were spun, acting as water sensitive mechanical locks.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adhesiveness
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Animals
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Biomimetic Materials / chemical synthesis*
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Biomimetic Materials / chemistry
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Bivalvia / chemistry*
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Ferric Compounds / chemistry*
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Hydrogels / chemical synthesis*
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Hydrogels / chemistry*
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Hydrogen-Ion Concentration
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Molecular Structure
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Polyamines / chemistry*
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Tannins / chemistry*
Substances
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Ferric Compounds
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Hydrogels
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Polyamines
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Tannins
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polyallylamine