Electrically Conducting Gels Formed From Polyaniline/Ethylcellulose/m-Cresol Ternary Solutions
✍ Scribed by Ignacio González; Mónica Vecino; M. Eugenia Muñoz; Anton Santamaría; J. Adolfo Pomposo
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 126 KB
- Volume
- 205
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Summary: Polyaniline doped with camphorsulfonic acid (PANI‐CSA) and ethylcellulose (EC), constitutes the basis of the investigated binary PANI(CSA)~0.5~/m‐cresol and ternary PANI(CSA)~0.5~/EC/m‐cresol solutions. Ternary solutions give rise to gels with a lower elastic modulus and electrical conductivity than binary PANI(CSA)~0.5~/m‐cresol gels. However, the dimensional stability is considerably improved, since warping observed in binary gels is eliminated or lessened. These results are explained considering the role played by ethylcellulose, which interacts with the hydroxyl group of m‐cresol, skimping PANI(CSA)~0.5~/m‐cresol specific interactions and retarding solvent evaporation.
Electrical conductivity of binary (▴) and ternary (•) gels as a function of m‐cresol content. The arrow indicates that warping is observed below this solvent level.
magnified imageElectrical conductivity of binary (▴) and ternary (•) gels as a function of m‐cresol content. The arrow indicates that warping is observed below this solvent level.