INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Electrochemical Ageing of Poly(aniline) and its Ring Substituted Derivatives
Autor/es:
W. A. MARMISOLLÉ; D. POSADAS; M. I. FLORIT
Revista:
JOURNAL OF PHYSICAL CHEMISTRY B
Editorial:
American Chemical Society
Referencias:
Lugar: Columbus; Año: 2008 vol. 112 p. 10800 - 10805
ISSN:
1089-5647
Resumen:
Aniline and methyl, ethyl, propyl and methoxy ring substituted derivatives have been polymerized by electrochemical methods. The reduction of the film produces ageing of the polymers. This is followed by the changes in the current/ potential profile of the voltammetric response. The effect of the substituents produces changes in both the extent and the rate of ageing. The rate of ageing can be represented by a Roginsky- Zeldovich or Elovich type of kinetics characterized by a pseudo zero order rate constant and a self inhibiting parameter. Both parameters and the extent of ageing are related to the free volume available for the different types of polymers.
