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Updated: Apr 17, 2026
Preparation of DNA-crosslinked Polyacrylamide Hydrogels
Published on: August 27, 2014
Molecularly engineered dual-crosslinked hydrogel with ultrahigh mechanical strength, toughness, and good
Peng Lin1, Shuanhong Ma, Xiaolong Wang
1State 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.
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.
