A statistical approach to evaluate the oxidative process of electrospun polyacrylonitrile ultrathin fibers

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dc.citation.issue43
dc.citation.volume134
dc.contributor.authorde Oliveira Junior, Mauro Santos [UNIFESP]
dc.contributor.authorManzolli Rodrigues, Bruno Vinicius
dc.contributor.authorMarcuzzo, Jossano Saldanha
dc.contributor.authorGuerrini, Lilia Muller [UNIFESP]
dc.contributor.authorBaldan, Mauricio Ribeiro
dc.contributor.authorRezende, Mirabel Cerqueira [UNIFESP]
dc.coverageHoboken
dc.date.accessioned2020-09-01T13:21:17Z
dc.date.available2020-09-01T13:21:17Z
dc.date.issued2017
dc.description.abstractA systematic study using design of experiments was applied in order to map out the thermal stabilization of electrospun polyacrylonitrile mats and to investigate how oxidation and cyclization reactions are affected by rate, temperature, and time in an oxidative environment. Cyclization indexes were estimated by a simple methodology based on differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy data. Values of enthalpy and relative intensities of bands assigned to CN and CN bonds were used on calculation. The statistical planning applied in this study was important to show that not always longest treatment is effective to stabilize polyacrylonitrile, but also samples obtained in less than 3 h presented low values of exothermic peak on DSC, values of cyclization indexes near to 90%, both from DSC and Fourier transform infrared spectroscopy techniques, reduced weight loss in thermogravimetric analysis and O/C ratio higher than 10% by X-ray photoelectron spectroscopy, that are appreciated characteristics to a precursor of high-performance carbon materials. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45458.en
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Brasil, Lab Nanotecnol Biomed, Rua Carolina Fonseca 235, BR-08230030 Sao Paulo, SP, Brazil
dc.description.affiliationCtr Ciencia & Tecnol Plasmas & Mat PlasMat, Inst Tecnol Aeronaut ITA DCTA, Praca Marechal Eduardo Gomes 50, BR-12228900 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationInst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat, Ave Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipNational Council for Scientific and Technological Development CNPq
dc.description.sponsorshipCAPES/PVNS
dc.description.sponsorshipSao Paulo Research Foundation (FAPESP)
dc.description.sponsorshipIDCNPq: 303287/2013-6
dc.description.sponsorshipIDFAPESP: 2014/00560-9
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.1002/app.45458
dc.identifier.citationJournal Of Applied Polymer Science. Hoboken, v. 134, n. 43, p. -, 2017.
dc.identifier.doi10.1002/app.45458
dc.identifier.issn0021-8995
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/58172
dc.identifier.wosWOS:000407604400018
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofJournal Of Applied Polymer Science
dc.rightsAcesso restrito
dc.subjectelectrospinningen
dc.subjectnanostructured polymersen
dc.subjectsynthesis and processing techniquesen
dc.subjectthermal propertiesen
dc.titleA statistical approach to evaluate the oxidative process of electrospun polyacrylonitrile ultrathin fibersen
dc.typeArtigo
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