Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays
Characteristics of X-ray transmissions were investigated for epoxy composites filled with 2–10 vol% WO3 loadings using synchrotron X-ray absorption spectroscopy (XAS) at 10–40 keV. The results obtained were used to determine the equivalent X-ray energies for the operating X-ray tube voltages of mamm...
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| Format: | Journal Article |
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Elsevier Science
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/21539 |
| _version_ | 1848750617657344000 |
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| author | Noor Azman, N. Siddiqui, Salim Low, It Meng |
| author_facet | Noor Azman, N. Siddiqui, Salim Low, It Meng |
| author_sort | Noor Azman, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Characteristics of X-ray transmissions were investigated for epoxy composites filled with 2–10 vol% WO3 loadings using synchrotron X-ray absorption spectroscopy (XAS) at 10–40 keV. The results obtained were used to determine the equivalent X-ray energies for the operating X-ray tube voltages of mammography and radiology machines. The results confirmed the superior attenuation ability of nano-sized WO3-epoxy composites in the energy range of 10–25 keV when compared to their micro-sized counterparts. However, at higher synchrotron radiation energies (i.e., 30–40 keV), the X-ray transmission characteristics were similar with no apparent size effect for both nano-sized and micro-sized WO3-epoxy composites. The equivalent X-ray energies for the operating X-ray tube voltages of the mammography unit (25–49 kV) were in the range of 15–25 keV. Similarly, for a radiology unit operating at 40–60 kV, the equivalent energy range was 25–40 keV, and for operating voltages greater than 60 kV (i.e., 70–100 kV), the equivalent energy was in excess of 40 keV. The mechanical properties of epoxy composites increased initially with an increase in the filler loading but a further increase in the WO3 loading resulted in deterioration of flexural strength, modulus and hardness. |
| first_indexed | 2025-11-14T07:39:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-21539 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:39:41Z |
| publishDate | 2013 |
| publisher | Elsevier Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-215392019-02-19T05:35:00Z Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays Noor Azman, N. Siddiqui, Salim Low, It Meng X-ray shielding Micro-sized WO3-epoxy composites Nano-sized WO3-epoxy composites X-ray transmission Filler loading Characteristics of X-ray transmissions were investigated for epoxy composites filled with 2–10 vol% WO3 loadings using synchrotron X-ray absorption spectroscopy (XAS) at 10–40 keV. The results obtained were used to determine the equivalent X-ray energies for the operating X-ray tube voltages of mammography and radiology machines. The results confirmed the superior attenuation ability of nano-sized WO3-epoxy composites in the energy range of 10–25 keV when compared to their micro-sized counterparts. However, at higher synchrotron radiation energies (i.e., 30–40 keV), the X-ray transmission characteristics were similar with no apparent size effect for both nano-sized and micro-sized WO3-epoxy composites. The equivalent X-ray energies for the operating X-ray tube voltages of the mammography unit (25–49 kV) were in the range of 15–25 keV. Similarly, for a radiology unit operating at 40–60 kV, the equivalent energy range was 25–40 keV, and for operating voltages greater than 60 kV (i.e., 70–100 kV), the equivalent energy was in excess of 40 keV. The mechanical properties of epoxy composites increased initially with an increase in the filler loading but a further increase in the WO3 loading resulted in deterioration of flexural strength, modulus and hardness. 2013 Journal Article http://hdl.handle.net/20.500.11937/21539 10.1016/j.msec.2013.08.023 Elsevier Science fulltext |
| spellingShingle | X-ray shielding Micro-sized WO3-epoxy composites Nano-sized WO3-epoxy composites X-ray transmission Filler loading Noor Azman, N. Siddiqui, Salim Low, It Meng Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title | Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title_full | Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title_fullStr | Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title_full_unstemmed | Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title_short | Characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic X-rays |
| title_sort | characterisation of micro-sized and nano-sized tungsten oxide-epoxy composites for radiation shielding of diagnostic x-rays |
| topic | X-ray shielding Micro-sized WO3-epoxy composites Nano-sized WO3-epoxy composites X-ray transmission Filler loading |
| url | http://hdl.handle.net/20.500.11937/21539 |