title: Molecularly engineered dual-crosslinked hydrogel with ultrahigh mechanical strength, toughness, and good self-recovery.
abstract: 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.
authors: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors: Peng
authors: P
authors: Lin
authors: Shuanhong
authors: S
authors: Ma
authors: Xiaolong
authors: X
authors: Wang
authors: Feng
authors: F
authors: Zhou
mesh_terms: D000178:Acrylamides / Q000737:chemistry; D004738:Engineering; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry*; D008422:Materials Testing; D055595:Mechanical Phenomena; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D016474:Weight-Bearing
chemical_list: D000178:Acrylamides; C431184:poly(acrylamide-co-acrylic acid); D014867:Water; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate
keywords: dual-crosslinking; hydrogels; self-recovery; ultrahigh strength