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Morphological, viscoelastic and mechanical characterization of polypropylene/exfoliated graphite nanocomposites

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Morphological, viscoelastic and mechanical characterization of polypropylene/exfoliated graphite nanocomposites

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Título Morphological, viscoelastic and mechanical characterization of polypropylene/exfoliated graphite nanocomposites
Autor Ferreira, Creusa Iara
Bianchi, Otávio
Soto Oviedo, Mauro Alfredo
Oliveira, Ricardo Vinicius Bof de
Mauler, Raquel Santos
Abstract The viscoelastic, mechanical and morphological properties of polypropylene/exfoliated graphite nanocomposites with different contents of nanofiller were investigated. According to transmission electron microscopy results, the nanofiller particles were homogeneously dispersed in the matrix. The rheological properties indicated that incorporation of graphite improved the matrix stiffness and had a reinforcing effect. Exfoliated graphite had a weak interaction with the polypropylene. The behavior of the nanocomposites was similar to that of polypropylene in terms of the interfacial detachment inferred from the transmission electron microscopy images and of their G’ (storage) and G’’ (loss) moduli, and viscosity. The mechanical properties of the nanocomposites compared to the matrix improved significantly for the flexural and storage moduli with little loss of impact strength.
Contido em Polímeros (São Carlos): ciência e tecnologia. São Carlos. Vol. 23, n. 4 (jul./ago. 2013), p. 456-461
Assunto Grafite
Nanocompósitos
[en] Exfoliated graphite
[en] Mechanical properties
[en] Nanocomposite
[en] Viscoelastic properties
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/83612
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