| 초록 |
Reduced graphene oxide-carbon nanotubes functionalized with 1-pyrenebutyric chloride(rGO-OCNT-PBC) were prepared from Multi-walled carbon nanotubes(MWCNTs), and then melt-mixed with nylon 6,6(PA66) in twin extruder to produce composites with improved mechanical properties. Graphene oxide-carbon nanotubes(GO-OCNT) were produced from the strong acid oxidation of MWCNTs, and then reduced at a high temperature. The overall surface area of GO-OCNT increased due to the creation of GO sheets surrounding MWCNTs. Later, physically adsorbed PBC formed more covalent bonds between the PA66 and MWCNTs matrix with wider surface area. TEM, FESEM, FTIR and XPS were carried out to investigate the formation of rGO-OCNT-PBC. The interfacial adhesion energy results between PA66 and rGO-OCNT-PBC were higher than those between PA66 and pristine MWCNTs. Owing to the increase in energy, PA66/rGO-OCNT-PBC reached a higher dispersibility and mechanical properties than PA66/pristine MWCNTs. |
