Journal of Nanoscience and Nanotechnology 2004-05-01

Dynamic scale theory for characterizing surface morphology of layer-by-layer films of poly(o-methoxyaniline).

Nara C de Souza, Josmary R Silva, Marcelo A Pereira-da-Silva, Maria Raposo, Roberto M Faria, José A Giacometti, Osvaldo N Oliveira

Index: J. Nanosci. Nanotechnol. 4(5) , 548-52, (2004)

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Abstract

The dynamic scale theory and fractal concepts are employed in the characterization of surface morphological properties of layer-by-layer (LBL) films from poly(o-methoxyaniline) (POMA) alternated with poly(vinyl sulfonic acid) (PVS). The fractal dimensions are found to depend on the procedures to fabricate the POMA/PVS multilayers, particularly with regard to the drying procedures. LBL films obtained via drying in ambient air show a more homogeneous surface, compared to films dried under vacuum or a flow of nitrogen, due to a uniform rearrangement of polymer molecules during solvent evaporation.