Abstract
The semiconducting polymer and inorganic metal oxide nanocomposites composed of polypyrrole/titanium dioxide (PPy/TiO2) were synthesized by in situ chemical oxidative polymerization of pyrrole in the presence of TiO2 particles in supercritical carbon dioxide (scCO2). TiO2 nanoparticles with average particle size of 5nm were surface modified by 3-(trimethoxysilyl)propyl methacrylate (γ-MPS) in order to disperse effectively in CO2 before the polymerization. Transmission electron microscope (TEM) image of the nanocomposite revealed well-dispersed TiO2 particles in PPy matrix. The nanocomposites were also confirmed by X-ray diffraction (XRD), thermogravimetric analysis (TGA) and FT-IR spectroscopy.
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