Producción Científica Profesorado

Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epoxy Resin Composite



Alvarez Romero, Giaan Arturo

2009

Licona-Sánchez T. J., Álvarez-Romero G. A., Palomar-Pardavé M. E., Galán-Vidal C. A., Páez Hernández M. E., Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epoxy Resin Composite, ECS Transactions, 2009, Vol. 20, Núm . 1, ISSN 1938-5862


Abstract


n this work, polypyrrole films are electrosynthesized in aqueous media over graphite-epoxy resin composite; sulphate ions used to dope the polymer are obtained from different salts (Na2SO4, Li2SO4, (NH4)2SO4 and K2SO4). Potentiostatic techniques are used to induce the polymerization. Potentiometric response of Ppy-SO4-2 films was evaluated by calibration curves. Analyzing the slope sign, behavior of the different films can be classified in three responses: anionic, cationic and anionic-cationic. These behaviors were observed for all synthesized films, independently of the sulphate salt used. When analyzing the transients obtained for the different salts, similarities where found for those with the same potentiometric behavior, but significative differences where observed when comparing transients of different potentiometric response. It was determined that the cation size of the sulphate salt influences the Ppy-SO4-2 film response. Boundaries on the potentiostatic synthesis parameters are suggested to induce a specific potentiometric response.



Producto de Investigación




Artículos relacionados

Simultaneous determination of tetracyclines in poultry muscle by capillary zone electrophoresis

Nucleation and Growth Kinetics of Electrodeposited Sulfate-Doped Polypyrrole: Determination of the D...

Presence and antimicrobial resistance of Escherichia coli isolated from foodstuffs in Hidalgo State ...

Evaluación del contenido de metales y su efecto en la estabilidad de antocianinas

Determination of non-steroidal anti-inflammatory drugs in wastewaters by magnetic matrix solid phase...

Potentiometric quantification of saccharin by using a selective membrane formed by pyrrole electropo...

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

Synthesis and crystal structures of cis-palladium(II) and cis-platinum(II) complexes containing dipy...

Chemical studies of anthocyanins: A review

Development of a novel nitrate-selective composite sensor based on doped polypyrrole