Gamma ray attenuation of hafnium dioxide- and tungsten trioxide-epoxy resin composites

Maria C. Molina Higgins; Nicholus A. Radcliffe; Miguel Toro-González; Jessika V. Rojas

doi:10.1007/s10967-019-06714-3

Gamma ray attenuation of hafnium dioxide- and tungsten trioxide-epoxy resin composites

Maria C. Molina Higgins, Nicholus A. Radcliffe, Miguel Toro-González, Jessika V. Rojas

Isotope Applications Research

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Composites containing WO₃ or HfO₂ nanoparticles were prepared and investigated as alternative shielding materials. Their performance was assessed using radioactive sources emitting photons with energies between 122 and 1407 keV. At 122 keV, the mass attenuation coefficient of the nanocomposites was five times greater to that of the epoxy matrix, and it gradually decreased with increasing energy. An enhancement in the mass attenuation coefficient of the polymer between 15% and 50% was observed at E > 1 MeV when adding the nanoparticles. These results support the development of lightweight garments for radiological application made of nanomaterials and polymeric matrices.

Original language	English
Pages (from-to)	707-716
Number of pages	10
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	322
Issue number	2
DOIs	https://doi.org/10.1007/s10967-019-06714-3
State	Published - Nov 1 2019

Funding

This work was financed by Virginia Commonwealth University (VCU) with the support of the Mechanical and Nuclear Engineering Department and the NRC-HQ-84-14-FOA-002 faculty development program in radiation detection and health physics. This work was financed by Virginia Commonwealth University (VCU) with the support of the Mechanical and Nuclear Engineering Department and the NRC-HQ-84-14-FOA-002 faculty development program in radiation detection and health physics.

Funders	Funder number
Mechanical and Nuclear Engineering Department
NRC-HQ-84-14-FOA-002
Virginia Commonwealth University

Keywords

Composites
Epoxy
Gamma rays
Hafnium dioxide
Radiation shielding
Tungsten trioxide

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10.1007/s10967-019-06714-3

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abstract = "Composites containing WO3 or HfO2 nanoparticles were prepared and investigated as alternative shielding materials. Their performance was assessed using radioactive sources emitting photons with energies between 122 and 1407 keV. At 122 keV, the mass attenuation coefficient of the nanocomposites was five times greater to that of the epoxy matrix, and it gradually decreased with increasing energy. An enhancement in the mass attenuation coefficient of the polymer between 15% and 50% was observed at E > 1 MeV when adding the nanoparticles. These results support the development of lightweight garments for radiological application made of nanomaterials and polymeric matrices.",

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AU - Molina Higgins, Maria C.

AU - Radcliffe, Nicholus A.

AU - Toro-González, Miguel

AU - Rojas, Jessika V.

PY - 2019/11/1

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AB - Composites containing WO3 or HfO2 nanoparticles were prepared and investigated as alternative shielding materials. Their performance was assessed using radioactive sources emitting photons with energies between 122 and 1407 keV. At 122 keV, the mass attenuation coefficient of the nanocomposites was five times greater to that of the epoxy matrix, and it gradually decreased with increasing energy. An enhancement in the mass attenuation coefficient of the polymer between 15% and 50% was observed at E > 1 MeV when adding the nanoparticles. These results support the development of lightweight garments for radiological application made of nanomaterials and polymeric matrices.

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Gamma ray attenuation of hafnium dioxide- and tungsten trioxide-epoxy resin composites

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