Structural and Conductivity Relationship of Binary and Ternary Composites of Polypyrrole, Montmorillonite and Silver

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dc.citation.issue12
dc.citation.volume17
dc.contributor.authorFranca, Debora
dc.contributor.authorRebessi, Ana Claudia
dc.contributor.authorLacerda Rubinger, Carla Patricia
dc.contributor.authorRibeiro, Geraldo Mathias
dc.contributor.authorCamilo, Fernanda Ferraz [UNIFESP]
dc.contributor.authorFaez, Roselena
dc.coverageValencia
dc.date.accessioned2020-09-01T13:21:10Z
dc.date.available2020-09-01T13:21:10Z
dc.date.issued2017
dc.description.abstractThis work focuses on the synthesis of binary composites of polypyrrole and silver and of ternary composites of polypyrrole, silver and organomontmorillonite performed in the presence of mixtures of two surfactants, sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB), in aqueous media. Polypyrrole-silver composites were obtained easily by the direct oxidation of pyrrole by silver nitrate using surfactant mixture. These samples exhibited polypyrrole doped with dodecylsulfate and nitrate and silver contents varied between 60 and 90 wt.%. The electrical conductivity is highly dependent on SDS/CTAB presence and proportions. NO3- acts as the main dopant in the absence of surfactants and the resistivity reaches the highest for PPy-OMt composites compared to silver-content ones. Besides the dopant effect, the surfactants mixtures have noticeable influence on silver particle size and morphology. In ternary composites the silver nanoparticles were spherically (around 100-200 nm) and well dispersed in the polymeric matrix. Activation energy, density of states and hopping characteristic length were calculated and it was found to be influenced by intercalating doped polypyrrole into the layers of montmorillonite in the presence of the Ag and surfactant. One-dimensional Mott's variable range hopping process was observed and interpreted in terms of straightening and linearization of the polymer chains.en
dc.description.affiliationUniv Fed Sao Carlos, Lab Polymer Mat & Biosorbents, Campus Araras,Rodovia Anhanguera,Km 174-SP-330, BR-13600970 Araras, SP, Brazil
dc.description.affiliationUniv Fed Itajuba, Phys & Chem Inst, BR-13610180 Itajuba, Brazil
dc.description.affiliationUniv Fed Minas Gerais, Phys Dept, Belo Horizonte, MG, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Lab Hybrid Mat, BR-31270901 Diadema, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Lab Hybrid Mat, BR-31270901 Diadema, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFAPESP
dc.description.sponsorshipFAPEMIG
dc.description.sponsorshipCAPES
dc.description.sponsorshipCNPq
dc.description.sponsorshipIDFAPESP: 2007/50742-2
dc.description.sponsorshipIDFAPESP: 2011/23742-7
dc.format.extent9203-9210
dc.identifierhttp://dx.doi.org/10.1166/jnn.2017.14302
dc.identifier.citationJournal Of Nanoscience And Nanotechnology. Valencia, v. 17, n. 12, p. 9203-9210, 2017.
dc.identifier.doi10.1166/jnn.2017.14302
dc.identifier.issn1533-4880
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/58108
dc.identifier.wosWOS:000417111000075
dc.language.isoeng
dc.publisherAmer Scientific Publishers
dc.relation.ispartofJournal Of Nanoscience And Nanotechnology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectElectrical Conductivityen
dc.subjectSilver Nanoparticlesen
dc.subjectPolypyrroleen
dc.subjectIn Situ Polymerizationen
dc.subjectSurfactanten
dc.titleStructural and Conductivity Relationship of Binary and Ternary Composites of Polypyrrole, Montmorillonite and Silveren
dc.typeinfo:eu-repo/semantics/article
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