| 초록 |
To secure efficient interactions between polymer matrices and graphenes, as-received graphenes were functionalized to create surface methacrylate groups, which could be crosslinked with matrix polymers in the existence of radical generators. Graphens were reacted with a silane coupling agent in a solution of ethanol, water and acetic acid to functionalize the surface of them. Radiation curable resins composed of oligomers, a monomer, a photoinitiator and a crosslinker were prepared, and then cured by exposure to 365-nm irradiation. Thermal and mechanical properties of the cured films were evaluated, and the swelling ratio, cross-linking density and average molecular weight between cross-linking points in the films were also quantified. In addition, the radiation-cured films reinforced with the methacrylated graphenes or as-received non-functionalized graphens were also prepared, and their physical properties were compared. |
