Tough, Stretchable, Compressive Novel Polymer/Graphene Oxide Nanocomposite Hydrogels with Excellent Self-Healing Performance

• DOI: 10.1021/acsami.7b12932
• Publication Date: 2017-10-11T15:12:48Z
• Authors: Chenguang Pan; Libin Liu; Qiang Chen; Qiang Zhang; Gailan Guo
• Keywords: 01 natural sciences; 0104 chemical sciences

Designing hydrogels with high mechanical properties without sacrificing their self-healing efficiencies remains great challenges. We have fabricated cationic polyacrylamide/graphene oxide (GO) by free-radical polymerization of acrylamide (AM) and 2-(dimethylamino)ethylacrylatemethochloride (DAC) in the presence GO. The ability can be tuned GO content mass ratio AM DAC. ionic bonds between DAC hydrogen efficiently dissipate energy rebuild networks. resulting composite possess stiffness (Young's modulus: ∼1.1 MPa), toughness (∼9.3 MJ m-3), fatigue resistance, as well efficiency (>92% tensile strength, >99% strain >93% toughness). In addition, completely dried recover original values spraying water still outstanding efficiency. Our design provide better fundamental understanding physical should enable development tough, for practical applications.