Abstract
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.
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