Synthesis of graphene peroxide and its application in fabricating super extensible and highly resilient nanocomposite hydrogels.
Functionalized graphene has been considered as one of the most important materials for preparing polymer nanocomposites due to its unique physical structure and properties. To increase the interfacial interaction between polymer component and graphene oxide (GO) sheets, in situ grafting polymerization initiated by a free radical initiator immobilized on GO sheets is a better choice. We report a facile and effective strategy for preparing graphene peroxide (GPO) via the radiation-induced peroxidation of GO. The formation of peroxides on GO is proven by iodometric measurement and other characterizations. Using GPO as a polyfunctional initiating and cross-linking center, we obtained GO composite hydrogels exhibiting excellent mechanical properties, namely, very high tensile strength (0.2-1.2 MPa), extremely high elongations (2000-5300%), and excellent resilience. This work provides new insight into the fabrication of GO/polymer nanocomposites to fulfill the excellent mechanical properties of graphene.
College of Chemistry, Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100875, People's Republic of China.
Jiaqi
J
Liu
Caifeng
C
Chen
Changcheng
C
He
Jing
J
Zhao
Xiaojing
X
Yang
Huiliang
H
Wang
D003460:Crystallization / Q000379:methods*; D055119:Elastic Modulus; D006108:Graphite / Q000138:chemical synthesis* / Q000737:chemistry*; D006244:Hardness; D020100:Hydrogels / Q000138:chemical synthesis*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D010545:Peroxides / Q000138:chemical synthesis*; D013499:Surface Properties
D020100:Hydrogels; D046911:Macromolecular Substances; D010545:Peroxides; D006108:Graphite