Effect of the carbon nanotube surface characteristics on the conductivity and dielectric constant of carbon nanotube/poly(vinylidene fluoride) composites

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Sónia Carabineiro (Autor) FEUP; Manuel Fernando R Pereira (Autor) FEUP; Pereira, JN (Autor) Outra; Caparros, C (Autor) Outra; Sencadas, V (Autor) Outra; Lanceros Mendez, S (Autor) Outra

Revista

Título: Nanoscale Research Letters

Vol. 6

Páginas: X1-5

ISSN: 1931-7573

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 26 Citações

ISI Web of Science

Scopus - 45 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-002-SFB

DOI: 10.1186/1556-276x-6-302

Abstract (EN): Commercial multi-walled carbon nanotubes (CNT) were functionalized by oxidation with HNO(3), to introduce oxygen-containing surface groups, and by thermal treatments at different temperatures for their selective removal. The obtained samples were characterized by adsorption of N(2) at -196 degrees C, temperature-programmed desorption and determination of pH at the point of zero charge. CNT/poly(vinylidene fluoride) composites were prepared using the above CNT samples, with different filler fractions up to 1 wt%. It was found that oxidation reduced composite conductivity for a given concentration, shifted the percolation threshold to higher concentrations, and had no significant effect in the dielectric response.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5