An exception to this, is
the behaviour of the film with 3% PANI–BS which shows nearly the same
|Z|0.01 Hz values than the film with no PANI. With the exception
of the coating with 3% PANI–BS (|Z|0.01 Hz = 2.8 × 105 after 40 days), the
|Z|0.01 Hz for the PANI-based coatings was in the range 1.1 × 106–1.4 × 107cm2 at the end of the 40 day-test period, indicating that the coating has not failed.