| 초록 |
It is generally accepted that most conducting polymers have defects in its application due to the lack of processability. To solve this problem, various techniques have been proposed such as soluble conducting polymer formatting by introducing functional surfactant and blend or composite formation with conventional polymers. The composites, one of these techniques, have been employed as the simplest ways to enhance the processability and the physical properties. In the last few years, many researchers have reported colloidal polypyrrole and polyaniline nanocomposites by using colloidal silica instead of polymeric stabilizers. Since Jonas et al first synthesized it in early 1990s, Poly(3,4-ethylenedioxythiophene) (PEDOT) has been attracting great interest because of its excellent properties, but for all that the experimental result of PEDOT-silica composites have not been reported yet. Hence, in our study, PEDOT nanocomposites were prepared in the presence of ultrafine colloidal silica particles(35±5nm, determined by FE-SEM). Even if there were some aggregates between particles, the characteristic raspberry type PEDOT-silica nanocomposites were formed. These composites have been characterized by various techniques including thermogravimetric analysis(TGA), scanning electron microscopy(SEM), transmission electron microscopy(TEM), FT-IR spectroscopy, electron spin resonance(ESR) and conductivity measurements. |
