TY - JOUR
T1 - Dielectric properties of a novel high absorbing onion-like-carbon based polymer composite
AU - Macutkevic, J.
AU - Kuzhir, P.
AU - Seliuta, D.
AU - Valusis, G.
AU - Banys, J.
AU - Paddubskaya, A.
AU - Bychanok, D.
AU - Slepyan, G.
AU - Maksimenko, S.
AU - Kuznetsov, V.
AU - Moseenkov, S.
AU - Shenderova, O.
AU - Mayer, A.
AU - Lambin, Philippe
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A novel lightweight onion-like carbon (OLC) based Poly(methyl metacrylate) (PMMA) composite with high electromagnetic (EM) absorption capability determined earlier in microwave range is studied in low frequencies from 20 Hz to 1 MHz by dielectric spectroscopy. The investigation of dielectric properties of PMMA films with incorporated OLC in small concentration (0.5-2 wt.%) have been carried out by varying the temperature between 240 and 520 K. The temperature behavior of the complex permittivity at a given frequency is found to be strongly dependent on the OLC concentration. The experimental data are in quantitative agreement with the results of modified effective medium calculations of OLC-based polymer film's permittivity. Both the experimental observations and theoretical simulation demonstrate that small additions of onion-like carbon particles to a polymer matrix can noticeably modify the composite response to low-frequency EM radiation as well as improve its thermal stability (increased glass transition and melting temperatures, correspondingly).
AB - A novel lightweight onion-like carbon (OLC) based Poly(methyl metacrylate) (PMMA) composite with high electromagnetic (EM) absorption capability determined earlier in microwave range is studied in low frequencies from 20 Hz to 1 MHz by dielectric spectroscopy. The investigation of dielectric properties of PMMA films with incorporated OLC in small concentration (0.5-2 wt.%) have been carried out by varying the temperature between 240 and 520 K. The temperature behavior of the complex permittivity at a given frequency is found to be strongly dependent on the OLC concentration. The experimental data are in quantitative agreement with the results of modified effective medium calculations of OLC-based polymer film's permittivity. Both the experimental observations and theoretical simulation demonstrate that small additions of onion-like carbon particles to a polymer matrix can noticeably modify the composite response to low-frequency EM radiation as well as improve its thermal stability (increased glass transition and melting temperatures, correspondingly).
UR - http://www.scopus.com/inward/record.url?scp=72049121465&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2009.11.011
DO - 10.1016/j.diamond.2009.11.011
M3 - Article
AN - SCOPUS:72049121465
SN - 0925-9635
VL - 19
SP - 91
EP - 99
JO - Diamond and Related Materials
JF - Diamond and Related Materials
IS - 1
ER -