Busca avançada
Ano de início
Entree


The "Superlubricity State" of Carbonaceous Fillers on Polymer Composites

Texto completo
Autor(es):
Ferreira, Eder H. C. ; Lima, Lucas P. ; Fechine, Guilhermino J. M.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: MACROMOLECULAR CHEMISTRY AND PHYSICS; v. 221, n. 16, p. 7-pg., 2020-07-19.
Resumo

In 2019 Ferreira et al. observed for the first time the influence of the superlubricity phenomenon of platelet-like fillers on the properties of high molecular weight polyethylene (HMWPE) in the molten state. At the time, the study was carried out in the solid state of the polymer, analyzing the influence of the superlubricity phenomenon of oxide graphene and oxide graphite (GrO) agglomerates on the mechanical properties of the HMWPE. It was observed that the agglomerates, due to their superlubricity state, toughen the HMWPE polymer matrix. Here, mechanical tests (tensile), X-ray microtomography, and scanning electron microscopy are carried out to elucidate this phenomenon. The same is observed for polystyrene containing very poorly dispersed GrO. The results presented here are a paradigm shift, as it has always been thought that the presence of agglomerates is harmful, but the opposite is proven here. In general, this paper can contribute a lot to the development of new composites and nanocomposites based on fillers that present the superlubricity phenomenon. (AU)

Processo FAPESP: 19/13416-7 - Propriedades mecânicas e tribológicas de nanocompósitos formados por Polietileno de Ultra Alta Massa Molar (PEUAMM) e materiais bidimensionais a base de carbono
Beneficiário:Eder Henrique Coelho Ferreira
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
Beneficiário:Antonio Helio de Castro Neto
Modalidade de apoio: Auxílio à Pesquisa - Programa SPEC
Processo FAPESP: 18/10910-8 - Fotodegradação e fotoestabilização de nanocompósitos poliméricos a base de cargas bidimensionais
Beneficiário:Guilhermino José Macêdo Fechine
Modalidade de apoio: Auxílio à Pesquisa - Regular