Abstract
Nanocomposites, i.e., polymer composites filled with conductive nano-fillers have been shown to be promising materials as broadband microwave absorbers. However, increasing the filler content above a critical value cannot provide further improvements of nanocomposite electromagnetic properties. Herein, the electromagnetic interference shielding efficiency of gamma-irradiated polymer composites was investigated. For that purpose, nine types of nanocomposites based on various polymers and various nanocarbon fillers were prepared and treated with gamma irradiation from Co-60 source by cumulative absorption doses up to 750 kGy. The corresponding electromagnetic properties (reflection, transmission, and absorption) were then measured in the Ka microwave frequency range. The experiments revealed two distinct behaviors, depending on the polymer matrix and the filler: either an improvement of the electromagnetic response under gamma-irradiation of about 90 kGy, or a high tolerance to irradiation up to 750 kGy.
| Original language | English |
|---|---|
| Pages (from-to) | 242-245 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 435 |
| DOIs | |
| Publication status | Published - 15 Nov 2018 |
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Keywords
- Electromagnetic properties
- Gamma-ray irradiation
- Microwaves
- Nanocomposite
- Radiation-chemical processes
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
Cite this
Radiation modification and radiation hardness of microwave properties for some polymer nanocomposites under Co-60 gamma irradiation. / Lobko, A.; Kazhuro, V.; Valynets, N.; Bellucci, S.; Celzard, A.; Zicans, J.; Kuzhir, P.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 435, 15.11.2018, p. 242-245.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Radiation modification and radiation hardness of microwave properties for some polymer nanocomposites under Co-60 gamma irradiation
AU - Lobko, A.
AU - Kazhuro, V.
AU - Valynets, N.
AU - Bellucci, S.
AU - Celzard, A.
AU - Zicans, J.
AU - Kuzhir, P.
PY - 2018/11/15
Y1 - 2018/11/15
N2 - Nanocomposites, i.e., polymer composites filled with conductive nano-fillers have been shown to be promising materials as broadband microwave absorbers. However, increasing the filler content above a critical value cannot provide further improvements of nanocomposite electromagnetic properties. Herein, the electromagnetic interference shielding efficiency of gamma-irradiated polymer composites was investigated. For that purpose, nine types of nanocomposites based on various polymers and various nanocarbon fillers were prepared and treated with gamma irradiation from Co-60 source by cumulative absorption doses up to 750 kGy. The corresponding electromagnetic properties (reflection, transmission, and absorption) were then measured in the Ka microwave frequency range. The experiments revealed two distinct behaviors, depending on the polymer matrix and the filler: either an improvement of the electromagnetic response under gamma-irradiation of about 90 kGy, or a high tolerance to irradiation up to 750 kGy.
AB - Nanocomposites, i.e., polymer composites filled with conductive nano-fillers have been shown to be promising materials as broadband microwave absorbers. However, increasing the filler content above a critical value cannot provide further improvements of nanocomposite electromagnetic properties. Herein, the electromagnetic interference shielding efficiency of gamma-irradiated polymer composites was investigated. For that purpose, nine types of nanocomposites based on various polymers and various nanocarbon fillers were prepared and treated with gamma irradiation from Co-60 source by cumulative absorption doses up to 750 kGy. The corresponding electromagnetic properties (reflection, transmission, and absorption) were then measured in the Ka microwave frequency range. The experiments revealed two distinct behaviors, depending on the polymer matrix and the filler: either an improvement of the electromagnetic response under gamma-irradiation of about 90 kGy, or a high tolerance to irradiation up to 750 kGy.
KW - Electromagnetic properties
KW - Gamma-ray irradiation
KW - Microwaves
KW - Nanocomposite
KW - Radiation-chemical processes
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UR - http://www.scopus.com/inward/citedby.url?scp=85034955316&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2017.10.029
DO - 10.1016/j.nimb.2017.10.029
M3 - Article
VL - 435
SP - 242
EP - 245
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
ER -