Arlindo, Elen Poliani S. [UNESP]Lucindo, Juliana A. [UNESP]Bastos, Carlos M. O.Emmel, Paulo D.Orlandi, Marcelo Ornaghi [UNESP]2014-05-202014-05-202012-06-14Journal of Physical Chemistry C. Washington: Amer Chemical Soc, v. 116, n. 23, p. 12946-12952, 2012.1932-7447http://hdl.handle.net/11449/10059In this work, nanocomposite films of indium tin oxide (ITO) nanowires in a PMMA matrix were obtained by tape casting. The electrical, optical and morphological properties of films were studied as a function of the amount of wires inserted in the composite, and it was used 1, 2, 5, and 10 wt %. Results confirmed that films transmittance decreases as the concentration of wires increases, attaining a minimum transmittance of 55% for 10 wt % of filler. on the other hand, the electrical resistance of composites was found to decrease by increasing the filler amount and the dc characterization indicate that percolation occurs for about 5 wt % of wires. The morphological studies carried out by TEM were considered to be in good agreement with the electrical results and confirm that for 5% of filler, the ITO nanostructures are in contact with one another inside the polymer. Moreover, we made computational simulation of ID structures in a general matrix and it was found that percolation should occur for about 12 wt %. Although computational results indicate higher amount of wires necessary for percolation than we found experimentally, both results illustrate that using one-dimensional nanostructures as filler in composites enables obtaining percolation for a smaller amount of filler than when using, for instance, nanoparticles. Therefore, the simple processing technique employed here can be used to obtain transparent and conductive composites with several useful applications.12946-12952engArtigo10.1021/jp3031418WOS:000305356200071Acesso restrito2305581567093057