Electrical conductivity values of the films.

Sample	Electrical conductivitya (S cm−1)
HPMC	Insulating material
PANI	17 × 10−3 ± 5.7 × 10−4
PANI_5%HPMC	11 × 10−3 ± 7.3 × 10−4
PANI_10%HPMC	9.1 × 10−3 ± 1.9 × 10−4
PANI_20%HPMC	7.6 × 10−3 ± 2.9 × 10−5
PANI_30%HPMC	6.3 × 10−3 ± 1.6 × 10−3
PANI_40%HPMC	5.4 × 10−3 ± 6.9 × 10−4

^aArithmetic average.