Journal
ADVANCED MATERIALS
Volume 27, Issue 12, Pages 2054-2059Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201405022
Keywords
hydrogels; dual-crosslinking; ultrahigh strength; self-recovery
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Funding
- NSFC [21125316, 21434009]
- CAS [KJZD-EW-M01]
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A molecularly engineered dual-crosslinked hydrogel with extraordinary mechanical properties is reported. The hydrogel network is formed with both chemical crosslinking and acrylic-Fe(III) coordination; these, respectively, impart the elasticity and enhance the mechanical properties by effectively dissipating energy. The optimal hydrogel achieves a tensile stress of ca. 6 MPa at a large elongation ratio (> 7 times), a toughness of 27 MJ m(-3), and a stiffness of ca. 2 MPa, and has good self-recovery properties.
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