Conducting polymer blends : polypyrrole and poly(vinyl methyl ketone)

Blends of polypyrrole (PPy) and poly(vinyl methyl ketone) (PVMK) have been prepared both chemically and electrochemically. Hydrogen bonding between PPy and PVMK has been verified by IR spectroscopy. No significant change in conductivity occurs on stretching the blends over 200%. PPy/PVMK blends prepared chemically and electrochemically exhibit threshold conductivities near 10% PPy. X-ray diffraction spectra suggest that crystallinity does not vary with PPy concentration in the blend. Conductivity vs temperature and conductivity vs moisture are reported as measures of environmental stability