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Effects of functionalized protonic acids on the miscibility of polyaniline/poly(2-ethyl-2-oxazoline) blends

✍ Scribed by C.H. Ong; S.H. Goh; H.S.O. Chan

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 490 KB
Volume: 38
Category: Article
ISSN: 0032-3861
DOI: 10.1016/s0032-3861(96)00618-0

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✦ Synopsis

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 (Tg) for each of the blends containing 5-60 wt% of PANI. The Tg 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 3 I 10 Scm .

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