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

• Type: Article in International Scientific Journal
• Date: 2011

Authors

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

Journal

Title: Nanoscale Research Letters

Vol. 6

Pages: X1-5

ISSN: 1931-7573

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 26 Citations

ISI Web of Science

Scopus - 45 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5