| 초록 |
The preparation of polymeric carbon nanotube composites is one of the most promising alternatives to the conventional filled polymers. The dispersion of the nanometer-sized carbon nanotubes in a polymer matrix leads to markedly improved physical properties of the polymer. This approach can be also applied to biodegradable synthetic aliphatic polyesters such as poly(L-lactic acid) (PLLA), which has been receiving growing attention due to the environmental concerns. In this study, the mechanical properties of PLLA was enhanced by the incorporation of small amount of carbon nanotubes in melt state, which could make them good competitors for commodity materials such as general purpose plastics, while keeping its complete biodegradability. For homogeneous dispersion of carbon nanotubes in matrix, oxygen-containing groups were introduced on the surface of carbon nanotubes. The electrical conductivity of the composite was also investigated. |
