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Title: X-DLVO interactions between Nanocolloidal Magnetic Particles : the quantitative interpretation of the pH-dependent phase diagram of EDL-MF
Authors: Campos, Alex Fabiano Cortez
Marinho, Epitácio Pinto
Ferreira, M. de A.
Tourinho, Francisco Augusto
Paula, Fábio Luís de Oliveira
Depeyrot, Jérôme
Assunto:: EDL-MF
Diagrama de fase
Issue Date: Apr-2009
Citation: CAMPOS, A. F. C. et al. X-DLVO Interactions between nanocolloidal magnetic particles: the quantitative interpretation of the pH-dependent phase diagram of EDL-MF. Braz. J. Phys. [online], 2009, v.39, n.1a, p. 230-235. ISSN 0103-9733.
Abstract: The phase behavior of acidic samples of EDL-MF based on cobalt ferrite nanoparticles with controlled mean sizes was investigated at constant temperature and in absence of magnetic field. By monitoring the anoparticle charge by pH adjustments, we constructed an experimental pH-dependent phase diagram for all samples that revealed sol, gel thixotropic or coagulated phases in different pH regions. Then, by using an extended DLVO potential we analyzed quantitatively the observed phase diagram in function of pH and nanoparticle mean size.
Appears in Collections:FUP - Artigos publicados em periódicos
IF - Artigos publicados em periódicos
IQ - Artigos publicados em periódicos

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