MORPHOLOGY OF POLY(VINYLIDENE FLUORIDE) AND POLY(O-METHOXYANILINE) BLENDS

Blends of poly(o-methoxyaniline) - POMA - and poly(vinylidene fluoride ) - PVDF - of various compositions were prepared from organic solvent solutions. Flexible, free-standing and stretchable films were obtained by casting, which were characterized by conductivity measurements, el ectron microscopy and differential scanning calorimetry. As expected, the blends conductivity increases with increasing contents of the cond ucting polymer. The onset of the conductivity at low contents of condu cting polymer indicates a low percolation threshold for the blends. De spite the presence of the conductive host, the blends displayed the cr ystalline spherulitic morphology and the beta-phase characteristic of pure PVDF. This morphology appears to be destroyed, however, if the fi lm is stretched by zone-drawing.