Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/82820
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Campo DC | Valor | Idioma |
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dc.contributor.author | Paleo, Antonio J. | por |
dc.contributor.author | Aribou, Najoia | por |
dc.contributor.author | Nioua, Yassine | por |
dc.contributor.author | Samir, Zineb | por |
dc.contributor.author | Fernandes, Lisete | por |
dc.contributor.author | Moreira, J. Agostinho | por |
dc.contributor.author | Achour, Mohammed E. | por |
dc.date.accessioned | 2023-02-22T11:34:51Z | - |
dc.date.available | 2023-02-22T11:34:51Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Paleo AJ, Aribou N, Nioua Y, et al. Electrical properties of melt-mixed polypropylene and as-grown carbon nanofiber composites: Analysis of their interphase via the AC conductivity modeling. Journal of Composite Materials. 2022;56(12):1879-1889. doi:10.1177/00219983221084407 | por |
dc.identifier.issn | 0021-9983 | por |
dc.identifier.uri | https://hdl.handle.net/1822/82820 | - |
dc.description.abstract | The morphology, crystallinity, and electrical conductivity (σ′ and σ″) as a function of frequency of polypropylene (PP) melt-extruded with different amounts of as-grown carbon nanofibers (CNFs) from 0 to 1.4 vol. % are examined. The PP/CNF composites present CNF aggregates randomly distributed within the PP and an insulator–conductor transition at CNF contents near 0.9 vol. %. The degree of crystallinity of PP/CNF composites with loadings of 1.4 vol. % increases ∼15% with respect to the neat PP (∼34%), with σ´ ∼ 8.6 × 10−5 S m−1 (σ″ ∼ 8.3 × 10−4 S m−1) at 2 MHz. In addition, the values of the electrical conductivity σint´ ∼2.9 × 10−6 S m−1 (σint″∼3.7 × 10−4 S m−1) at 2 MHz, as a result of the interphase (ϕint ∼0.05 vol. %) of the 1.4 vol. % PP/CNF composites, are estimated by the use of a modified generalized effective medium model (GEM). The analysis gathered in here indicates that the interphase between the polymer and the conducting particle may have a quantifiable effect on the electrical properties of carbon-based polymer composites, and this fact should not be neglected in the production of conducting polymer composites (CPCs) with enhanced electrical properties. | por |
dc.description.sponsorship | This study was funded by FCT-Foundation for Science and Technology: “Plurianual” 2020–2023 Project UIDB/00264/2020. | por |
dc.language.iso | eng | por |
dc.publisher | SAGE Publications | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00264%2F2020/PT | por |
dc.rights | openAccess | por |
dc.subject | Carbon nanofibers | por |
dc.subject | Polypropylene | por |
dc.subject | Interphase | por |
dc.subject | Polymer composites | por |
dc.subject | Generalized effective medium model | por |
dc.title | Electrical properties of melt-mixed polypropylene and as-grown carbon nanofiber composites: analysis of their interphase via the AC conductivity modeling | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://journals.sagepub.com/doi/10.1177/00219983221084407 | por |
oaire.citationStartPage | 1879 | por |
oaire.citationEndPage | 1889 | por |
oaire.citationIssue | 12 | por |
oaire.citationVolume | 56 | por |
dc.identifier.eissn | 1530-793X | por |
dc.identifier.doi | 10.1177/00219983221084407 | por |
dc.subject.fos | Engenharia e Tecnologia::Engenharia dos Materiais | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Composite Materials | por |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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00219983221084407.pdf | 1,49 MB | Adobe PDF | Ver/Abrir |