Dosimetric response of Polystyrene/Multi-Walled Carbon Nanotube and Polystyrene/Graphene Nanoplate nanocomposites: A Comparison study
Paper ID : 1293-ICNS
Authors:
AHMADREZA VATANKHAH *1, Shahryar Malekie2, Armin Mosayebi3, Farhood Ziaie3
1Department of Nuclear Engineering, Islamic Azad University Arsanjan Branch, Arsanjan, Iran
2Radiation Application Research School, Nuclear Science & Technology Research Institute, Karaj, Iran
3Radiation Application Research School, Nuclear Science & Technology Research Institute
Abstract:
For the first time, the authors introduced a novel real-time dosimeter based on the polymer/carbon nanostructured nanocomposite applied in the diagnostic and therapeutic levels. One of the factors that can affect the response of these emerging dosimeters based on polymer-carbon nanostructured materials is the variation of the electric current of the sample due to absorption of the ionizing radiation. In fact, incorporating the carbon nanostructured materials like Multi-Walled Carbon Nanotubes (MWCNTs) and Graphene Nanoplates (GNPs) into the polymeric matrices resulted in promoting the electrical, mechanical and thermal properties of the nanocomposites. In this experimental work, two different nanocomposites namely Polystyrene/Multi-Walled Carbon Nanotube (PS/MWCNT) and Polystyrene/Graphene Nanoplate (PS/GNP) were fabricated via a mixed solution method. SEM analysis revealed the good dispersion state of the nanoparticles into the polystyrene matrix. The responses of PS/MWCNT and PS/GNP dosimeters to gamma-rays at the dose-rates 48-159 mGy/min were investigated and compared. Results showed that the standard deviation due to repeatability of the measuring photocurrent by an electrometer for two kinds of the dosimeters was 0.5%; also the sensitivity of the PS/MWCNT dosimeter for all the dose-rates was higher than the PS/GNP dosimeter significantly. So the PS/MWCNT nanocomposite can be used as a real-time dosimeter for the diagnostic and therapeutic levels.
Keywords:
Gamma-Irradiation, Dose-Rate, MWCNT, GNP, Polymer Nanocomposite
Status : Abstract Accepted (Poster Presentation)