title: Development and characterization of multilayer films of polyaniline, titanium dioxide and CTAB for potential antimicrobial applications.
abstract: 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.
authors.affiliation: Núcleo de Pesquisa em Biodiversidade e Biotecnologia, BIOTEC, CMRV, UFPI, Parnaíba, PI 64202-020, Brazil.
authors.forename: Emanuel Airton O
authors.initials: EA
authors.lastname: Farias
authors.affiliation: Núcleo de Pesquisa em Biodiversidade e Biotecnologia, BIOTEC, CMRV, UFPI, Parnaíba, PI 64202-020, Brazil.
authors.forename: Natália A
authors.initials: NA
authors.lastname: Dionisio
authors.affiliation: Núcleo de Pesquisa em Biodiversidade e Biotecnologia, BIOTEC, CMRV, UFPI, Parnaíba, PI 64202-020, Brazil.
authors.forename: Patrick V
authors.initials: PV
authors.lastname: Quelemes
authors.affiliation: CCNH, UFABC, Santo André, SP 09210-170, Brazil.
authors.forename: Sergio Henrique
authors.initials: SH
authors.lastname: Leal
authors.affiliation: Laboratório Interdisciplinar de Materiais Avançados, LIMAv, CCN, UFPI, Teresina, PI 64049-550, Brazil.
authors.forename: José Milton E
authors.initials: JM
authors.lastname: Matos
authors.affiliation: Laboratório Interdisciplinar de Materiais Avançados, LIMAv, CCN, UFPI, Teresina, PI 64049-550, Brazil.
authors.forename: Edson C
authors.initials: EC
authors.lastname: Silva Filho
authors.affiliation: Departamento de Física - UFSC, Florianópolis, SC 88040-900, Brazil.
authors.forename: Ivan H
authors.initials: IH
authors.lastname: Bechtold
authors.affiliation: Núcleo de Pesquisa em Biodiversidade e Biotecnologia, BIOTEC, CMRV, UFPI, Parnaíba, PI 64202-020, Brazil.
authors.forename: José Roberto S A
authors.initials: JR
authors.lastname: Leite
authors.affiliation: Núcleo de Pesquisa em Biodiversidade e Biotecnologia, BIOTEC, CMRV, UFPI, Parnaíba, PI 64202-020, Brazil; Laboratório Interdisciplinar de Materiais Avançados, LIMAv, CCN, UFPI, Teresina, PI 64049-550, Brazil. Electronic address: carla.eiras.ufpi@gmail.com.
authors.forename: Carla
authors.initials: C
authors.lastname: Eiras
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry* / Q000494:pharmacology*; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000494:pharmacology; D002470:Cell Survival / Q000187:drug effects; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry* / Q000494:pharmacology*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis / Q000494:pharmacology; D008422:Materials Testing; D008567:Membranes, Artificial; D013211:Staphylococcus aureus / Q000187:drug effects / Q000502:physiology*; D014025:Titanium / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000814:Aniline Compounds; D000900:Anti-Bacterial Agents; D002593:Cetrimonium Compounds; D020099:Coated Materials, Biocompatible; D008567:Membranes, Artificial; C416807:polyaniline; C009495:titanium dioxide; D014025:Titanium; D000077286:Cetrimonium
keywords: Antimicrobial activity; Cetyl trimethylammonium bromide; Composite films; Layer-by-layer; Polyaniline; Titanium dioxide