Dielectric Properties of Onion-Like Carbon and Detonation Nanodiamond/Polydimethysiloxane Composites | Sciact - CRIS-system of Boreskov Institute of Catalysis

Dielectric Properties of Onion-Like Carbon and Detonation Nanodiamond/Polydimethysiloxane Composites Full article

Journal

Polymer Composites
ISSN: 0272-8397 , E-ISSN: 1548-0569

Output data

Year: 2015, Volume: 36, Number: 11, Pages: 2084-2092 Pages count : 9 DOI: 10.1002/pc.23119

Tags

Detonation; Dielectric properties of solids; Electron tunneling; Percolation (computer storage); Percolation (fluids); Permittivity; Solvents

Authors

Macutkevic Jan ¹ , Banys Juras ² , Moseenkov Sergey ³ , Kuznetsov Vladimir ^3,4 , Nunn Nicholas ⁵ , Shenderova Olga ⁵

Affiliations

1	Center for Physical Sciences and Technology, A. Gostauto 11, LT-01108, Vilnius, Lithuania
2	Radiophysics department, Faculty of Physics, Vilnius University, Sauletekio Ave. 9, LT-10222, Vilnius, Lithuania
3	Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, Novosibirsk 630090, Russia
4	Radiophysical Department, National Tomsk State University, Tomsk, Russia
5	International Technology Center, Raleigh, North Carolina 27715, USA

Funding (2)

1	Russian Foundation for Basic Research	12-03-31404
2	European Commission	VP1-3.1-SMM-07-K-02-041/LSS-120000-2259

Results of dielectric investigations of onion-like carbon (OLC) and detonation nanodiamond (DND)/polydimethysiloxane composites in wide frequency (20 Hz–3 THz) and temperatures (26–300 K) ranges are presented. The percolation threshold in OLC composites is 6.8 vol%. Electrical conduction in the OLC composites above the percolation threshold occurs mainly due to electron tunneling between OLC clusters and quasi-one-dimensional hopping inside the clusters. Hopping almost vanishes at frequencies above 100 GHz, where phonon contribution to the dielectric permittivity dominates. At low concentrations of nanocarbon particles (concentrations below the percolation threshold for OLC), the dielectric properties of the OLC and DND composites are similar. However, DNDs provide a noticeable improvement of the mechanical properties of the composites, in contrast with OLC. Therefore, a combination of the two nanomaterials in the composites could be beneficial

Macutkevic J. , Banys J. , Moseenkov S. , Kuznetsov V. , Nunn N. , Shenderova O.
Dielectric Properties of Onion-Like Carbon and Detonation Nanodiamond/Polydimethysiloxane Composites
Polymer Composites. 2015. V.36. N11. P.2084-2092. DOI: 10.1002/pc.23119 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Apr 17, 2014
Accepted:	Jun 14, 2014
Published online:	Jul 1, 2014
Published print:	Nov 1, 2015

Web of science:	WOS:000363389200016
Scopus:	2-s2.0-84945208115
Elibrary:	24963880
Chemical Abstracts:	2014:1071306
OpenAlex:	W1997608475

DB	Citing
Web of science	7
Scopus	12
Elibrary	14
OpenAlex	13