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Electrochemically deposited polypyrrole films and their characterization

Electrochemically deposited polypyrrole films and their characterization
Electrochemically deposited polypyrrole films and their characterization
Ionically conductive polypyrrole films have been deposited at 295 K from anhydrous acetonitrile, acetonitrile/H2O and NaBF4 aqueous solutions onto platinum, mild steel and stainless steel discs, using cyclic voltammetry, potentiostatic and galvanostatic techniques. Cyclic voltammetry of the polymer films has been studied as a function of water content of the acetonitrile solvent, polypyrrole concentration and potential sweep rate. Potentiostatic growth of thicker (<30 micron) films on stainless steel allowed free-standing polypyrrole membranes to be produced. Well adherent and conductive films were deposited at constant potential in stirred solutions from acetonitrile electrolytes containing 1% (v/v) of water. The membrane resistivity of the reduced films in 0.5 mol dm-3 KCl(aq) at 295 K was ? 1 x 106 ohm cm, while the resistivity of the oxidised membrane was 2700 ohm cm.
conductive polymers, polymer membrane, polypyrrole formation, pyrrole oxidation.
6025-6034
Tietje-Girault, J.
6fb98734-c484-4baf-9f3b-9ff35e9ad514
Ponce de León, C.A.
ee45a26e-db9c-4c51-96b6-26792fbaac3e
Walsh, F.C
309528e7-062e-439b-af40-9309bc91efb2
Tietje-Girault, J.
6fb98734-c484-4baf-9f3b-9ff35e9ad514
Ponce de León, C.A.
ee45a26e-db9c-4c51-96b6-26792fbaac3e
Walsh, F.C
309528e7-062e-439b-af40-9309bc91efb2

Tietje-Girault, J., Ponce de León, C.A. and Walsh, F.C (2007) Electrochemically deposited polypyrrole films and their characterization. Surface and Coatings Technology, 201 (12), 6025-6034. (doi:10.1016/j.surfcoat.2006.11.009).

Record type: Article

Abstract

Ionically conductive polypyrrole films have been deposited at 295 K from anhydrous acetonitrile, acetonitrile/H2O and NaBF4 aqueous solutions onto platinum, mild steel and stainless steel discs, using cyclic voltammetry, potentiostatic and galvanostatic techniques. Cyclic voltammetry of the polymer films has been studied as a function of water content of the acetonitrile solvent, polypyrrole concentration and potential sweep rate. Potentiostatic growth of thicker (<30 micron) films on stainless steel allowed free-standing polypyrrole membranes to be produced. Well adherent and conductive films were deposited at constant potential in stirred solutions from acetonitrile electrolytes containing 1% (v/v) of water. The membrane resistivity of the reduced films in 0.5 mol dm-3 KCl(aq) at 295 K was ? 1 x 106 ohm cm, while the resistivity of the oxidised membrane was 2700 ohm cm.

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More information

Published date: 5 March 2007
Keywords: conductive polymers, polymer membrane, polypyrrole formation, pyrrole oxidation.
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 43883
URI: http://eprints.soton.ac.uk/id/eprint/43883
PURE UUID: c325959e-8da3-419b-b5e9-301281f2af89

Catalogue record

Date deposited: 01 Feb 2007
Last modified: 05 Oct 2018 12:03

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