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dc.contributor.authorPavoski, Giovanipt_BR
dc.contributor.authorMaraschin, Thuany Garciapt_BR
dc.contributor.authorFim, Fabiana de Carvalhopt_BR
dc.contributor.authorBalzaretti, Naira Mariapt_BR
dc.contributor.authorGalland, Griselda Ligia Barrerapt_BR
dc.contributor.authorMoura, Cassio Steinpt_BR
dc.contributor.authorBasso, Nara Regina de Souzapt_BR
dc.date.accessioned2017-08-23T02:31:24Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn1516-1439pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/165622pt_BR
dc.description.abstractThis work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials were evaluated: expanded graphite and graphite flakes. The method of oxidation used was the Staudenmaier one, which was tested over different lengths of time. No appreciable differences were found among the oxidation times and so the lowest oxidation time (24 h) was chosen as the most adequate. An investigation was also conducted into suitable temperatures for the reduction of graphite oxide. A temperature of 1000 ºC gave the best results, allowing a good quality material with few defects to be obtained. The reduction was also evaluated under inert and normal atmosphere. The best results were obtained when the least modified material, e. g., graphite flakes, was used as a starting material, oxidized for 24h and reduced at 1000 ºC for 30 s in a quartz ampoule under a normal atmosphere.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 20, no. 1 (Jan./Feb. 2017), p. 53-61pt_BR
dc.rightsOpen Accessen
dc.subjectGrafenopt_BR
dc.subjectGraphene oxideen
dc.subjectGrafitept_BR
dc.subjectFew layer grapheneen
dc.subjectGraphiteen
dc.subjectOxidaçãopt_BR
dc.subjectGrapheneen
dc.titleFew layer reduced graphene oxide : evaluation of the best experimental conditions for easy productionpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001024808pt_BR
dc.type.originNacionalpt_BR


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