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Conducting poly(3,4-ethylenedioxythiophene)-montmorillonite exfoliated nanocomposites |
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| Authors: | David Aradilla Francesc Estrany Denise S Azambuja María T Casas Carlos A Ferreira |
| Institution: | a Departament d’Enginyeria Química, E.T.S. d’Enginyers Industrials, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain b Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C’, C/Pasqual i Vila s/n, Barcelona E-08028, Spain c Unitat de Química Industrial, Escola Universitària d’Enginyeria Tècnica Industrial de Barcelona, Universitat Politècnica de Catalunya, Comte d’Urgell 187, 08036 Barcelona, Spain d Institute of Chemistry, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil e Universidade Federal do Rio Grande do Sul, DEMAT, Av. Bento Gonçalves 9500, Setor 4, Prédio 74, CEP 91501-970, Porto Alegre, RS, Brazil |
| Abstract: | Exfoliated nanocomposites formed by poly(3,4-ethylenedioxythiophene) and different concentrations of non-modified montmorillonite (bentonite), which range from 1% to 10% w/w, have been prepared by anodic electropolymerization in aqueous solution. Analyses of the electrochemical and electrical properties reveal that the electroactivity of the nanocomposites is higher than that of the individual homopolymer, while the electrical conductivity of the two systems is practically identical. On the other hand, the exfoliated distribution of the clay in the polymeric matrix and the morphology of the prepared materials have been characterized using transmission electron microscopy, X-ray diffraction and atomic force microscopy. The overall of the results represents a significant improvement with respect to other nanocomposites constituted by conducting polymers and clays, including those involving poly(3,4-ethylenedioxythiophene), and evidences the reliability of the preparation procedure employed in this work. |
| Keywords: | Poly(3 4-ethylendioxythiophene) Montmorillonite Nanocomposite Conducting polymer Nanoclay |
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