Producción Científica Profesorado

Potentiometric Behavior of Diverse Polypyrrolesulphate Films Electro Synthesized on Graphite Epoxy Resin Composite



Páez Hernández, María Elena

2009

J. Licona-Sánchez, T., Álvarez-Romero, G. A. Palomar-Pardavé, M., Galán-Vidal. C.A., Páez-Hernández, M.E. Potentiometric Behavior of Diverse Polypyrrolesulphate Films Electro Synthesized on Graphite Epoxy Resin Composite ECS Transactions, 20:1 (2009) 31-40. http://dx.doi.org/10.1149/1.3268370


Abstract


In 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

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

Chemical studies of anthocyanins: A review

Facilitated transport of Hg(II) through novel activated composite membranes

Silver and Silver Chloride Electrodeposits, an Alternative in the Construction of Ag/AgCl Solid Elec...

Influence of the Cation Nature of the Sulphate Salt on the Electrochemical Synthesis of Sulfate-Dope...

Prevalence and Antimicrobial Resistance Patterns of Salmonella from Different Raw Foods in Mexico

Development of a Polypyrrole Selective Membrane For The Potentiometric Quantification of Saccharinat...

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

Determination of primary amino acids in wines by high performance liquid magneto-chromatography

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