| 초록 |
To take full advantage of epoxy nanocomposites with carbon nanotubes homogeneous dispersion and strong interfacial bonding are essential and these can be achieved by an effective functionalization of carbon nanotubes. Therefore, in this study, amine groups were introduced on the surface of multi-wall carbon nanotubes (MWNTs) via treating them with 4-aminobenzoic acid in polyphosphoric acid. FT-IR spectroscopy and TGA were used to confirm the functionalization. Epoxy/MWNT nanocomposites were prepared and their curing behavior and physical properties were investigated by DSC, DMA and TMA. Fracture surface of the nanocomposites were investigated by SEM. The functionalization induced strong interfacial bonding and resulted in considerable improvements in the properties of the nanocomposites. |
