2016 Volume 70 Issue 5 Pages 529-535
We have prepared organic conducting nanocomposite particles which utilize polypyrrole/polyaniline as conducting parts and small silica particles as dispersants. The nanocomposite particles of polypyrrole/polyaniline and silica represent a potentially useful processable form of polypyrrole/polyaniline, a normally intractable conducting polymer. Transmission electron microscopy (TEM) studies confirm that the polypyrrole-silica/poly aniline-silica nanocomposite particles are made up of microaggregates of the original small silica particles, which give rise to a raspberry morphology. The particle diameter of the nanocomposites as measured by the TEM observation can be varied over the range 200-400nm depending on the colloid synthesis conditions. We demonstrated that the polypyrrole-silica/polyaniline-silica nanocomposite particles can be utilized as display elements for electrophoretic display due to their high colloid stabilities. The electrical conductivities of polypyrrole-silica/polyaniline-silica nanocomposite particles are measured and the paper sheets coated with these nanocomposite particles have higher conductivities compared to a conventional paper sheet. The polypyrrole-silica/polyaniline-silica nanocomposite particles can be utilized as conductive paper sheets.
