Fabrication of polypyrrole nanoparticles using microemulsion polymerization for diferent Py/APS/SDS molar ratios

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dc.contributor.authorSantim, Ricardo Hidalgo
dc.contributor.authorde Aquino, Hermes Adolfo [UNESP]
dc.contributor.authorMalmonge, José Antonio [UNESP]
dc.contributor.institutionUniversidade Federal de Minas Gerais (UFMG)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:43:48Z
dc.date.available2018-12-11T16:43:48Z
dc.date.issued2016-01-01
dc.description.abstractPolypyrrole nanoparticles (PPy) were synthesized by the chemical oxidative microemulsion of pyrrole (Py) monomer using ammonium persulfate (APS) as an oxidant agent and sodium dodecylsulfate (SDS) as a surfactant at 28°C and 0°C. Different Py:APS:SDS molar ratios were used, and the properties of the resulting material were examined by four-probe DC electrical conductivity, ultraviolet-visible-near infrared (UV-vis-Nir), and Fourier-transform infrared (FTIR) spectroscopies as well as field-emission scanning electron microscopy (FESEM). UV-vis-Nir and FTIR spectra show the formation of a polaron band owing to the doping of PPy by SDS. The electrical conductivity and morphology of PPy nanoparticles depend on the synthesis conditions. Electrical conductivity of ~95.3×10-3 S/cm was achieved for PPy synthesized at 0°C. For the same Py:APS:SDS molar ratio, the nanoparticle shape changed from cylindrical to spherical upon simply lowering the synthesis temperature.en
dc.description.affiliationInstituto de Ciências Agrárias Universidade Federal de Minas Gerais (UFMG)
dc.description.affiliationDepartamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)
dc.description.affiliationUnespDepartamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)
dc.format.extent391-395
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.869.391
dc.identifier.citationMaterials Science Forum, v. 869, p. 391-395.
dc.identifier.doi10.4028/www.scientific.net/MSF.869.391
dc.identifier.file2-s2.0-84988448098.pdf
dc.identifier.issn0255-5476
dc.identifier.scopus2-s2.0-84988448098
dc.identifier.urihttp://hdl.handle.net/11449/168965
dc.language.isoeng
dc.relation.ispartofMaterials Science Forum
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectMicroemulsion polymerization
dc.subjectNanoparticles
dc.subjectPolypyrrole
dc.titleFabrication of polypyrrole nanoparticles using microemulsion polymerization for diferent Py/APS/SDS molar ratiosen
dc.typeTrabalho apresentado em evento

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