High-Tribological-Performance Polymer Nanocomposites: An Approach Based on the Superlubricity State of the Graphene Oxide Agglomerates

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dc.contributor.authorFerreira, Eder Henrique Coelho
dc.contributor.authorVieira, Angela Aparecida
dc.contributor.authorVieira, Lucia
dc.contributor.authorFechine, Guilhermino José Macêdo
dc.date.accessioned2025-04-10T18:07:15Z
dc.date.available2025-04-10T18:07:15Z
dc.date.issued22021
dc.description.abstractHere, nanocomposites of high-molecular-weight polyethylene (HMWPE) and HMWPE- UHMWPE (80/20 wt.%) containing a low amount of multilayer graphene oxide (mGO) (≤0.1 wt.%) were produced via twin-screw extrusion to produce materials with a higher tribological performance than UHMWPE. Due to the high viscosity of both polymers, the nanocomposites presented a signifi- cant concentration of agglomerates. However, the mechanical (tensile) and tribological (volumetric loss) performances of the nanocomposites were superior to those of UHMWPE. The morphology of the nanocomposites was investigated using differential scanning calorimetry (DSC), microtomogra- phy, and transmission electron microscopy (TEM). The explanation for these results is based on the superlubricity phenomenon of mGO agglomerates. It was also shown that the well-exfoliated mGO also contained in the nanocomposite was of fundamental importance as a mechanical reinforcement for the polymer. Even with a high concentration of agglomerates, the nanocomposites displayed tribological properties superior to UHMWPE’s (wear resistance up to 27% higher and friction co- efficient up to 57% lower). Therefore, this manuscript brings a new exception to the rule, showing that agglomerates can act in a beneficial way to the mechanical properties of polymers, as long as the superlubricity phenomenon is present in the agglomerates contained in the polymer.
dc.description.physical14 p.
dc.format.mimetypePDF
dc.identifier.affiliationInstituto Presbiteriano Mackenzie
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.bibliographicCitationFERREIRA, Eder Henrique Coelho et al. High-Tribological-Performance Polymer Nanocomposites: An Approach Based on the Superlubricity State of the Graphene Oxide Agglomerates. Polymers, v. 13, n. 14, p. 1-14, 2021. Disponível em:
dc.identifier.doi10.3390/polym13142237
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/834
dc.language.isoen_US
dc.publisherMDPI
dc.rights.holderPolymers
dc.subject.keywordUHMWPE
dc.subject.keywordTribological performance
dc.subject.keywordGraphene oxide
dc.subject.keywordSuperlubricity phenomenon
dc.subject.keywordNanocomposite
dc.titleHigh-Tribological-Performance Polymer Nanocomposites: An Approach Based on the Superlubricity State of the Graphene Oxide Agglomerates
dc.typeArtigos de Periódicos

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