A series of blends of dodecylbenzenesulfonic acid (DBSA)-doped polyaniline (PANDR) and PVC were synthesized by solution blending
technique and investigated by heatflow microcalorimetry (HFC) for thermal and oxidative stability and for PVC–PANDR compatibility.
FTIR results provided evidence for strong dipole–dipole interactions between PANDR and PVC. The energy of the oxidation is
independent of the composition. The interaction energy and thermal stability increased with the increase of PANDR content
in the blend. The activation energies calculated by using Arrhenius relationship can be employed for accelerated ageing of
the synthesized blends. It has been observed that the average degradation of PANDR component is higher than that of PVC.