| 초록 |
Carbon nanotubes (CNTs) are extended, cylindrical assemblies of aromatic graphene with a number of unique electronic and mechanical properties dependent on the chirality and form of an individual tube. The ability to handle carbon nanotubes as individual components and the understanding of their solution properties are essential for characterization of their intrinsic properties and for further development of their applications. Chemical functionalization and surfactant adsorption on CNT surfaces are two of the most widely-used methods for solubilization of nanotubes. Unfortunately, both methods have significant drawbacks, as covalent attachment of chemical groups on the CNT surface alters a nanotube’s intrinsic properties and surfactants adsorbed on nanotubes create a physical barrier between the nanotubes and the environment. For many applications, the ideal case would be to have a stable suspension of CNTs that is inherently soluble, stabilized not by the addition of chemical components, but by aspects of the maintain nature of the CNT itself. Among the many materials that have been combined with CNT to form a composite, polyol has been utilized to attain superior material properties. Due to its excellent properties such as viscoelasticity, biocompatibility and good chemical stability, polyol has been considered as a good candidate for various applications such as medicine tablets, biosensor and solid state electrolytes. Based on the previous reports, it was found that both electrical and mechanical properties were considerably enhanced with the increase of CNT weight fraction in the composite material. The aim of this research is to fabricate electroconductive CNF/CNT composite material based polyol. The CNF/CNT composite dispersion was prepared by mechanical process. Using the polyol based dispersion, the CNF/CNT composite films were prepared using casting methods. The composite film samples were investigated about electroconductive and morphology properties. |
