| 초록 |
In the last few years, many researchers have reported colloidal polypyrrole and polyaniline nanocomposites by using colloidal silica instead of polymeric stabilizers. Poly(3,4-ethylene -dioxythiophene) (PEDOT) has been attracting the great interest because of its excellent properties since Jonas et al. first synthesized it in early 1990s, but PEDOT-silica composites have not been studied yet. Hence, in our research, we have focused on the preparation of stable colloidal nanocomposites of conducting polymers using small silica particles of 25±5nm diameter. These colloidal composites consist of microaggregates of the silica particles and conducting polymers. Although the full details of the mechanism of the particle formation have not been reported, most of the result presents that these silica particles are incorporated with synthesized polymer rather than just on their surfaces. This approach can improve the colloidal stability and thermal stability of the conducting polymer by nature of the colloidal silica particles. These composites have been characterized by various techniques including thermogravimetry(TGA), scanning electron microscopy(SEM), elemental analysis(EA), FTIR spectroscopy, X-ray photoelectron spectroscopy(XPS) and conductivity measurements.
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