Study of chemical processes in irradiated polycarbonate in the context of its applicability for integrating dosimetry of high doses

0536571 - ÚJF 2021 RIV GB eng J - Journal Article
Zoul, D. - Koplová, M. - Zimina, M. - Libera, O. - Rosnecký, V. - Košťál, M. - Šimon, J. - Schulc, M. - Vinš, M. - Cabalka, M. - Kučera, Jan - Strunga, Vladimír - Štěpánková, H. - Římal, V. - Čížek, J. - Štěpánek, J. - Procházka, M.
Study of chemical processes in irradiated polycarbonate in the context of its applicability for integrating dosimetry of high doses.
Radiation Physics and Chemistry. Roč. 177, DEC (2020), č. článku 109203. ISSN 0969-806X. E-ISSN 1879-0895
R&D Projects: GA MŠMT LM2015056
Institutional support: RVO:61389005
Keywords : Polycarbonate dosimetry * spectrophotometry * tensile testing * nanoindentation * NMR spectroscopy * positron annihilation spectroscopy
OECD category: Analytical chemistry
Impact factor: 2.858, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.radphyschem.2020.109203

The aim of this work is the study of polycarbonate for integrating dosimetry of high doses of ionizing radiation as a considerably cheaper alternative to commonly used alanine dosimetry. It is focused on the molecular mechanisms of physical and chemical processes that cause color changes of the polymer after irradiation. Simultaneously, the processes that affect the regeneration time of these optical changes were mapped. The methods of absorption optical spectroscopy, nuclear magnetic resonance and positron annihilation spectroscopy were used for these analyses. Moreover, the detected structural changes in the molecular chains of the irradiated polymer were compared to the observed changes in mechanical properties studied using uniaxial tensile testing and nanoindentation.
Permanent Link: http://hdl.handle.net/11104/0314335