We report on our de conductivity measurements of mixed samples of poly
aniline in the conducting form blended with polyaniline in the insulat
ing form and made conducting subsequent to processing. Emeraldine base
polyaniline (PANEB) dissolved in N-methylpyrrolidinone (NMP) and emer
aldine base polyaniline doped with camphor sulfonic acid (CSA) but dis
solved in NMP [and also in dimethyl sulfoxide (DMSO)] were mixed in va
rious ratios according to the symbolic notation (PANCSA-NMP)(1-x)(PANE
B-NMP)(x) and (PANCSA-DMSO)(1-x)(PANEB-NMP)(x), respectively. Films ob
tained were then equilibrated in 1 M HCl for a period of 40-60 h and v
acuum dried overnight prior to performing conductivity measurements. I
t is shown that the room temperature conductivity increases with incre
asing values of x. (C) 1996 American Institute of Physics.