| 초록 |
Nylon 6,6 (PA66) composites containing nitrogen doped multi-walled carbon nanotubes (N-MWCNTs) were prepared to improve interfacial adhesion between MWCNTs and PA66 and thereby reinforce mechanical properties of the composites. N-MWCNTs produced by this pyrolysis method contains various forms of nitrogen, such as pyrrolic, pyridinic, quaternary, oxidized nitrogen. The prepared N-MWCNTs was mixed with PA66 based composites using a twin screw melting extruder. The formation of N-MWCNTs was observed by some analyses containing FT-IR, FE-SEM, XPS. The interfacial adhesion energy results between PA66 and N-MWCNTs measured by drop on fiber method were higher than those between PA66 and pristine MWCNTs. By the effect of improved interfacial adhesion energies, it was confirmed that PA66 / N-MWCNTs has enhanced dispersion and higher mechanical properties than PA66 / pristine MWCNTs with the same percent contents. |
