An initial mole ratio of [APS] and [ANI] was 1.25. 1.00 g of PET fabric was immersed in 80ml 0.2MTiO2 colloid and stirred for 10 min. Afterwards, 10ml of 1.2 MHCl solution containing ANI dissolved at various concentrations (5.33 × 10−2–2.29 × 10−2 M) and 10ml of 1.2 M HCl solution containing APS in concentrations ranging from 6.66 × 10−2 to 2.86 × 10−2 M, were added into reaction mixture. The PANI/TiO2 nanocomposites prepared at initial
[TiO2]/[ANI]mole ratios of 30, 50 and 70 are labeled as TP-30, TP-50 and TP-70, respectively. The reaction mixturewas stirred for 3 days. In order to remove residual monomer, oxidant and low-molecular weight fractions, samples were rinsed in 0.01 M HCl. Finally, the nanocomposites were dried at room temperature until a constant mass was reached. The PANI coated PET fabricwas fabricated in the samemanner butwithout colloidal TiO2 NPs. Pure PET fabricwas used as a reference sample. It should be emphasized that during the polymerization of ANI in the presence of PET fabric (without TiO2 NPs) the formation of the precipitate of PANI in reaction suspension and deposition of generated polymer onto the surface of PET fabric went on simultaneously. In contrast, by adding TiO2 NPs, colloidal polymerization process occurred. In this case, the deposition of PANI/TiO2 nanocomposite onto the surface of PET fabric occurs with the formation of stable and transparent dispersion of PANI/TiO2 nanocomposite.