| 초록 |
Cellulose/CNT (and Cellulose/Graphene) nanocomposite films (and fibers) were prepared with graphene oxides (GOs) and acid-treated CNTs (A-CNTs) using a so-called "Lyocell" method, and their structures and properties were studied by SEM, universal testing machine, TGA, WAXS and conductometer to establish the structure and property relationship. The GO (functionalized by acid treatment with a mixture of sodium nitrate, sulfuric acid and potassium permanganate to form hydroxyl, epoxy and carboxylic groups on the surface of the graphite) and A-CNT were well dispersed in monohydrated N-methylmorpholine-N-Oxide (NMMO) (the solvent of cellulose) by sonication. The improvement of the mechanical/thermal/electrical properties of the Cellulose/Graphene and Cellulose/CNT composite films made them possible to use as conducting electrodes, transparent electrodes, photodiodes, carbonization films, field effect transistors and hole transport materials. |
