Characterization of the chemical and structural modifications induced by gamma rays on the MAGIC polymer gel

Understanding the chemistry of radiation-induced polymerization in polymer gel dosimeters is of great importance in the evaluating of the capability, stability and efficacy of the polymer gel to measuring accurately the three-dimensional dose response. The aim of this work is to characterize the che...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2020-01, Vol.166, p.108451, Article 108451
Main Authors: BrahimiMoussa, S., Benamar, M.El.A., LounisMokrani, Z.
Format: Article
Language:English
Subjects:
Crosslinking
Dosimeters
Gamma irradiation
Gamma rays
Organic chemistry
Polymer gels
Polymerization
Polymers
Radiation effects
Stability analysis
Termination (polymerization)
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Summary:Understanding the chemistry of radiation-induced polymerization in polymer gel dosimeters is of great importance in the evaluating of the capability, stability and efficacy of the polymer gel to measuring accurately the three-dimensional dose response. The aim of this work is to characterize the chemical and structural modifications induced by gamma irradiation in normoxic MAGIC polymer gel under different experimental conditions. These modifications have been investigated using FTIR, HPLC, SEM and UV–Visible techniques. Radical formation, chain growth and crosslinking termination processes were considered from FTIR, HPLC results while the polymerized particle sizes were derived from UV–visible and SEM results for different absorbed doses. •Radiation effect on MAGIC polymer gel structure.•Physico-chemical characterization techniques (FTIR, HPLC, UV–Visible, SEM).•Understanding gelatin role in polymerization process and 3D dosimetry.•Evolution of the polymerized particle sizes and their result on the calibration dose response.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2019.108451