Electrophysical and Electromagnetic Properties of Pure MWNTs and MWNT/PMMA Composite Materials Depending on Their Structure
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
9th Biennial International Workshop on Fullerenes and Atomic Clusters
06-10 Jul 2009
,
Санкт-Петербург
|
| Journal |
Fullerenes Nanotubes and Carbon Nanostructures
ISSN: 1536-383X
, E-ISSN: 1536-4046
|
| Output data |
Year: 2010,
Volume: 18,
Number: 4-6,
Pages: 505-515
Pages count
: 11
DOI:
10.1080/1536383X.2010.488184
|
| Tags |
Carbon nanotubes, Composites, Electromagnetic shielding |
| Authors |
Mazov I.N.
1,2
,
Kuznetsov V.L.
1,3
,
Moseenkov S.I.
1,2
,
Ishchenko A.V.
1,3
,
Romanenko A.I.
2,4
,
Anikeeva O.B.
2,4
,
Buryakov T.I.
2,4
,
Korovin E.Yu.
5
,
Zhuravlev V.A.
5
,
Suslyaev V.I.
5
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, Russia
|
| 3 |
Novosibirsk State Technical University, Novosibirsk, Russia
|
| 4 |
Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
|
| 5 |
Tomsk State University, Tomsk, Russia
|
|
Funding (5)
|
1
|
International Science and Technology Center
|
B-1708
|
|
2
|
The Ministry of Education and Science of the Russian Federation
|
2.1.1/410
|
|
3
|
The Ministry of Education and Science of the Russian Federation
|
2.1.2/2125
|
|
4
|
Council for Grants of the President of the Russian Federation
|
МК-538.2009.3
|
|
5
|
The Ministry of Education and Science of the Russian Federation
|
2.1.1/4513
|
Three types of carbon multi-walled nanotubes (MWNT) with different morphology and mean diameter (7.5, 10.5, 22 nm) were used to produce polymethylmetacrylate-based composites (MWNT/PMMA) with variable MWNT loading (0.5–5wt%). The electrophysical properties of produced composites and electromagnetic response in frequency range of 2–12 GHz were investigated. Electrical conductivity of composites depends on the MWNT type increasing with lowering of the nanotube diameter and loading in composite. Reflectance and transmittance coefficients were calculated from
dielectric permittivity data and found to correlate with electrical conductivity. The highest level of EM reflection was obtained for 7.5 nm MWNT-based composites and makes the value of 0.65–0.7, whereas 22 nm MWNT/PMMA composites are more transparent for EM radiation with reflection coefficient 0.3–0.4 for the highest MWNT loading. Thus MWNT/PMMA composites demonstrate high EM shielding properties.