Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4479
Title: Study of the growth process of in situ polyaniline deposited films.
Authors: Travain, Silmar Antonio
Souza, Nara C. de
Balogh, Débora Terezia
Giacometti, José Alberto
Keywords: Polyaniline
Adsorption kinetics
Surface morphology
Issue Date: 2007
Citation: TRAVAIN, S. A. et al. Study of the growth process of in situ polyaniline deposited films. Journal of Colloid and Interface Science, v. 316, p. 292-297, 2007. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0021979707010880>. Acesso em: 24 fev. 2015.
Abstract: Polyaniline (PAni) thin films were deposited onto BK7 glass substrates using the in situ deposition technique. The control of the time and the aniline concentration in the PAni polymerization reaction on the film deposition allowed us to prepare films with different thickness, down to ∼25 nm. The film growth process was monitored by measuring the UV–vis spectra and the AFM height profiles of the film surface. The curves of adsorption kinetics were analyzed with the Avrami’s model, yielding an exponent n = 3, thus indicating nucleation of spheroids at the initial stages of polymerization that grow through a diffusion process. AFM images of the surface height profiles corroborate this hypothesis, with spheroids growing with no preferred orientation during the in situ deposition.
URI: http://www.repositorio.ufop.br/handle/123456789/4479
metadata.dc.identifier.doi: https://doi.org/10.1016/j.jcis.2007.08.024
ISSN: 0021-9797
metadata.dc.rights.license: O periódico Journal of Colloid and Interface Science concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3566051143783.
Appears in Collections:DEFIS - Artigos publicados em periódicos

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