The effect of nanotube surface oxidation on the electrical properties of multiwall carbon nanotube/poly(vinylidene fluoride) composites

• Type: Article in International Scientific Journal
• Date: 2012

Authors

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

Journal

Title: Journal of Materials Science

Vol. 47

Pages: 8103-8111

ISSN: 0022-2461

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 31 Citations

Other information

Authenticus ID: P-002-38D

DOI: 10.1007/s10853-012-6705-7

Abstract (EN): Carbon nanotube/poly(vinylidene fluoride) (CNT/PVDF) composites were prepared using CNT with different oxidation and thermal treatments. The oxidation procedure leads to CNT with the most acidic characteristics that lower the degree of crystallinity of the polymer and contribute to a large increase of the dielectric constant. The surface treatments, in general, increase the percolation threshold and decrease conductivity. The surface treatments do not seem to affect CNT interactions and similar degrees of dispersion are achieved in all cases, as shown by the SEM results. The maximum value of the dielectric constant is similar to 630. It is demonstrated that the composite conductivity can be attributed to a hopping mechanism that is strongly affected by the surface treatment of the CNT.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9