The FTIR absorption band at 3325 cm1 was assigned to N-H stretching of the amine group of polyaniline (spectrum not shown). The peaks at 1596 and 1493 cm1, which are characteristics of polyaniline, were most probably due to the
C=C stretching of quinoid and benzinoid groups, respectively (Lakshmi et al. 2009; Kim et al. 2001).