The effect of polyaniline (PAni) on the tensile properties, electrical conductivity, morphology, and thermal degradation of (poly[vinyl chloride])/(poly[ethylene oxide])/PAni (PVC/PEO/PAni) conductive films was studied. The tensile strength and modulus of elasticity of PVC/PEO/PAni conductive films decreased with an increase in the PAni loading. At high PAni content, the PVC/PEO/PAni conductive films exhibited higher electrical conductivity and thermal stability than lower filler loadings. A scanning electron micrograph morphology study showed that the PAni could significantly improve interaction at the interface of the filler into the PVC/ PEO phase. The PVC/PEO/PAni conductive films are known to interact with chemical samples while maintaining good compatibility and good application of conductive polymer for use in gas sensors. J. VINYL ADDIT. TECHNOL., 00:000-000, 2015.