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dc.typeArtigo de periódicopt_BR
dc.titleEffect Of Mwcnt Functionalization On Thermal And Electrical Properties Of Phbv/mwcnt Nanocompositespt_BR
dc.contributor.authorDo Amaral Montanheiroa T.L.pt_BR
dc.contributor.authorCristovan F.H.pt_BR
dc.contributor.authorMachado J.P.B.pt_BR
dc.contributor.authorTada D.B.pt_BR
dc.contributor.authorDuran N.pt_BR
dc.contributor.authorLemes A.P.pt_BR
unicamp.authorDurán, N., Universidade Federal de São Paulo (UNIFESP), Instituto de Ciência e Tecnologia, São José Dos CamposSão Paulo, Brazil, Universidade Estadual de Campinas (UNICAMP), Laboratory on Nanostructures Synthesis and Biological Interactions (NanoBioss)Campinas, São Paulo, Brazilpt_BR
unicamp.authorLemes, A.P., Universidade Estadual de Campinas (UNICAMP), Instituto de QuómicaCampinas, São Paulo, Brazilpt_BR Amaral Montanheiroa, T.L., Universidade Federal de São Paulo (UNIFESP), Instituto de Ciência e Tecnologia, São José Dos CamposSão Paulo, Brazilptóvan, F.H., Universidade Federal de São Paulo (UNIFESP), Instituto de Ciência e Tecnologia, São José Dos CamposSão Paulo, Brazilpt, J.P.B., Instituto Nacional de Pesquisas Espaciais (INPE), Laboratório Associado de Sensores e Materiais (LAS), São José Dos CamposSão Paulo, Brazilpt, D.B., Universidade Federal de São Paulo (UNIFESP), Instituto de Ciência e Tecnologia, São José Dos CamposSão Paulo, Brazilpt
dc.description.abstractPristine multiwalled carbon nanotubes (P-MWCNTs) were functionalized with carboxylic groups (MWCNT-COOH) through oxidation reactions and then reduced to produce hydroxyl groups (MWCNT-OH). Pristine and functionalized MWCNTs were used to produce poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) nanocomposites with 0.5 wt% of MWCNTs. MWCNT functionalization was verified by visual stability in water, infrared and Raman spectroscopy, and zeta potential measurements. Pristine and functionalized MWCNTs acted as the nucleating agent in a PHBV matrix, as verified by differential scanning calorimetry (DSC). However, the dispersion of filler into the matrix, thermal stability, and direct current (DC) conductivity were affected by MWCNT functionalization. Scanning electron microscopy (SEM) showed that filler dispersion into the PHBV matrix was improved with MWCNT functionalization. The surface roughness was reduced with the addition and functionalization of MWCNT. The thermal stability of PHBV/MWCNT-COOH, PHBV/P-MWCNT, and PHBV/MWCNT-OH nanocomposites were 20, 30, and 30 °C higher than neat PHBV, respectively, as verified by thermogravimetry analysis (TGA). Addition of pristine and functionalized MWCNTs provided electrical conductivity in nanocomposite, which was higher for PHBV/P-MWCNTs (1.2 × 10-5 S cm-1).en
dc.relation.ispartofJournal of Materials Researchpt_BR
dc.publisherCambridge University Presspt_BR
dc.identifier.citationJournal Of Materials Research. Cambridge University Press, v. 760, n. , p. - , 2014.pt_BR
dc.description.provenanceMade available in DSpace on 2015-06-25T18:06:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.description.provenanceMade available in DSpace on 2015-11-26T15:06:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
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