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Molecularly Engineered Dual‐Crosslinked Hydrogel with Ultrahigh Mechanical Strength, Toughness, and Good Self‐Recovery
Author(s) -
Lin Peng,
Ma Shuanhong,
Wang Xiaolong,
Zhou Feng
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201405022
Subject(s) - toughness , materials science , ultimate tensile strength , stiffness , elongation , composite material , elasticity (physics) , self healing hydrogels , dual (grammatical number) , polymer science , polymer chemistry , art , literature
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.