Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 35, Issue -, Pages 449-454Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2013.11.002
Keywords
Composite films; Polyaniline; Titanium dioxide; Cetyl trimethylammonium bromide; Layer-by-layer; Antimicrobial activity
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Funding
- National Council for Scientific and Technological Development (CNPq, Brazil) [503495/2009-3]
- Nanobiomed Network CAPES, Brazil
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Composites prepared from polyaniline (PANI) and the ceramic technology of titanium dioxide (TiO2) have been proposed, however, the interaction of these materials with greater control of molecular arrangement becomes attractive in order to achieve properties not previously described or yet the optimization of those already reported. Therefore, in this study, thin hybrid films made of polyaniline (PANI), a conductive polymer, and the technological ceramic, titanium dioxide (TiO2), were prepared by the layer-by-layer (LbL) self-assembly technique. The films were characterized by cyclic voltammetry (CV), UV-VIS spectroscopy and atomic force microscopy (AFM). Aiming to improve the dispersion of the ceramic in the polymer matrix, the commercial surfactant, cetyl trimethylammonium bromide (CTAB), was used in the formation of the films. The best condition of deposition was found showing synergic interactions between the conjugated materials. The antibacterial activity of the PANI(TiO2)/CTAB films was studied and the obtained results suggest their use as antimicrobial coatings. (C) 2013 Elsevier B.V. All rights reserved.
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