Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives

dc.contributor.authorAlves, William Ferreira
dc.contributor.authorMalmonge, José Antonio [UNESP]
dc.contributor.authorMattoso, Luiz Henrique Capparelli
dc.contributor.authorDe Medeiros, Eliton Souto
dc.contributor.institutionUniversidade Federal Do Acre-UFAC
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)
dc.date.accessioned2019-10-06T16:01:36Z
dc.date.available2019-10-06T16:01:36Z
dc.date.issued2018-08-01
dc.description.abstractThe non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative atmospheres, using Flynn-Wall-Ozawa's approach to assess the kinetic parameters of the decomposition process. The order of reaction was found to be dependent on the degree of conversion indicating that both the early and the later stages of polymer degradation were next the zero or pseudo zero order kinetics, whereas the intermediate stages follow a first order kinetics. The activation energy was found to be dependent on both the degree of conversion and PANI derivative. Activation energy values vary from 125 to 250 kJ/mol, to decompositions carried out under nitrogen, and 75 to 120 kJ/mol to oxidative atmosphere. Parent PANI presented the best thermal stability and suggesting that thermal stability is also influenced by derivatization and type of atmosphere used.en
dc.description.affiliationUniversidade Federal Do Acre-UFAC Campus Floresta
dc.description.affiliationDepartamento de Física e Química-DFQ Universidade Estadual Paulista júlio de Mesquita Filho-UNESP Campus de Ilha Solteira
dc.description.affiliationLaboratório de Nanotecnologia para O Agronegócio-LNNA Centro Nacional de Pesquisa e Desenvolvimento de Instrumentacao Agropecuaria-CNPDIA Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA
dc.description.affiliationLaboratório de Materiais e Biossistemas-LAMAB Universidade Federal da Paraíba-UFPB
dc.description.affiliationUnespDepartamento de Física e Química-DFQ Universidade Estadual Paulista júlio de Mesquita Filho-UNESP Campus de Ilha Solteira
dc.format.extent285-292
dc.identifierhttp://dx.doi.org/10.1590/0104-1428.03116
dc.identifier.citationPolimeros, v. 28, n. 4, p. 285-292, 2018.
dc.identifier.doi10.1590/0104-1428.03116
dc.identifier.fileS0104-14282018000400285.pdf
dc.identifier.issn1678-5169
dc.identifier.issn0104-1428
dc.identifier.scieloS0104-14282018000400285
dc.identifier.scopus2-s2.0-85055173835
dc.identifier.urihttp://hdl.handle.net/11449/188234
dc.language.isoeng
dc.relation.ispartofPolimeros
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectFlynn-Wall-Ozawa's approach
dc.subjectPANI
dc.subjectPOEA
dc.subjectPOMA
dc.subjectThermal decomposition
dc.titleNon-isothermal decomposition kinetics of conductive polyaniline and its derivativesen
dc.typeArtigo

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Carregando...
Imagem de Miniatura
Nome:
S0104-14282018000400285.pdf
Tamanho:
1.84 MB
Formato:
Adobe Portable Document Format