The miscibility of polyaniline (PANI) salts, doped with p-phenol sulfonic acid (PSA) or 5-sulfosalicylic acid (SSA), with poly(2-ethyl-2-oxazoline) (PEOx) was studied by differential scanning calorimetry (d.s.c.) and Fourier-transform infra-red spectroscopy (FTi.r.). D.s.c. measurements show a single glass transition temperature (T-g) for each of the blends containing 5-60 wt% of PANI. The T-g value shifts away from that of PEOx with increasing PANI content. FTi.r. studies show the presence of specific interactions between the polymers. The interaction in the PEOx/PANI-SSA system is stronger than that in the PEOx/PANI-PSA system. Electrical conductivities of the blends, determined by four-point probe, range from 10(-5) to 10(-3) S cm(-1).