Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding

Lead bricks are the most widely used form of gamma ray shields in diagnostic radiology, radiotherapy, and nuclear medicine departments. However, lead is heavy, toxic, and dangerous to human health. Polymer-based radiation shields can be utilised in radiation shielding field due to their excellent ph...

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Main Author:	Abualroos, Nadin J D
Format:	Thesis
Language:	English
Published:	2022
Subjects:	R5-920 Medicine (General)
Online Access:	http://eprints.usm.my/59781/1/NADIN%20J%20D%20ABUALROOS%20-%20TESIS24.pdf
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id	my-usm-ep.59781
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spelling	my-usm-ep.597812024-01-31T02:29:50Z Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding 2022-06 Abualroos, Nadin J D R5-920 Medicine (General) Lead bricks are the most widely used form of gamma ray shields in diagnostic radiology, radiotherapy, and nuclear medicine departments. However, lead is heavy, toxic, and dangerous to human health. Polymer-based radiation shields can be utilised in radiation shielding field due to their excellent physical and chemical properties, ease of fabrication, low manufacturing costs, and toughness. Also, their radiation shielding properties can be improved by using high atomic number fillers. The purpose of this research was to develop a lead-free tungsten carbide-based polymeric bricks as gamma radiation shielding. The fabrication of tungsten carbide-based polymeric composites involved mixing tungsten carbide powder and tungsten carbide cobalt powder with epoxy resin at different weight percentages (60, 65, 70, 75, 80, 85, 90) of fillers. Also, addition of bismuth oxide and barium sulphate powder to tungsten carbide-based epoxy matrix were studied. The physical, morphological, chemical, mechanical, and photon shielding properties were investigated for all the fabricated composites. The most optimum powder epoxy combination among all samples were 85 and 90 weight percentage of fillers. The microstructural analysis indicated that the fillers distributed uniformly within the epoxy matrix. Some agglomerations were observed for composites having more than 75 wt% of filler. Fourier transform infrared spectroscopy was used to study the chemical properties of the fabricated composites. FTIR absorption spectrum of each sample analysed in the range of 600-4000 cm-1. The results obtained did not show any spectral change for all samples. 2022-06 Thesis http://eprints.usm.my/59781/ http://eprints.usm.my/59781/1/NADIN%20J%20D%20ABUALROOS%20-%20TESIS24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Institut Perubatan & Pergigian Termaju (Advanced Medical & Dental Institute (AMDI)
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	R5-920 Medicine (General)
spellingShingle	R5-920 Medicine (General) Abualroos, Nadin J D Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
description	Lead bricks are the most widely used form of gamma ray shields in diagnostic radiology, radiotherapy, and nuclear medicine departments. However, lead is heavy, toxic, and dangerous to human health. Polymer-based radiation shields can be utilised in radiation shielding field due to their excellent physical and chemical properties, ease of fabrication, low manufacturing costs, and toughness. Also, their radiation shielding properties can be improved by using high atomic number fillers. The purpose of this research was to develop a lead-free tungsten carbide-based polymeric bricks as gamma radiation shielding. The fabrication of tungsten carbide-based polymeric composites involved mixing tungsten carbide powder and tungsten carbide cobalt powder with epoxy resin at different weight percentages (60, 65, 70, 75, 80, 85, 90) of fillers. Also, addition of bismuth oxide and barium sulphate powder to tungsten carbide-based epoxy matrix were studied. The physical, morphological, chemical, mechanical, and photon shielding properties were investigated for all the fabricated composites. The most optimum powder epoxy combination among all samples were 85 and 90 weight percentage of fillers. The microstructural analysis indicated that the fillers distributed uniformly within the epoxy matrix. Some agglomerations were observed for composites having more than 75 wt% of filler. Fourier transform infrared spectroscopy was used to study the chemical properties of the fabricated composites. FTIR absorption spectrum of each sample analysed in the range of 600-4000 cm-1. The results obtained did not show any spectral change for all samples.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Abualroos, Nadin J D
author_facet	Abualroos, Nadin J D
author_sort	Abualroos, Nadin J D
title	Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
title_short	Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
title_full	Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
title_fullStr	Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
title_full_unstemmed	Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding
title_sort	development of lead-free tungsten carbide-based polymeric bricks as gamma radiation shielding
granting_institution	Universiti Sains Malaysia
granting_department	Institut Perubatan & Pergigian Termaju (Advanced Medical & Dental Institute (AMDI)
publishDate	2022
url	http://eprints.usm.my/59781/1/NADIN%20J%20D%20ABUALROOS%20-%20TESIS24.pdf
_version_	1794024054041083904

Development Of Lead-free Tungsten Carbide-based Polymeric Bricks As Gamma Radiation Shielding

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