Rate of elapsed polymerization of hydroxyethylacrylate gel induced by gamma irradiation
Ahmed Rabaeh, Khalid and Saion, Elias and Ahmed Ali Omer, Mohammad and Abdul Rahman, Azhar and Yusif Hussain, Mohammad and Iskandar, Shahrim and Mohammad Ali, Noria (2008) Rate of elapsed polymerization of hydroxyethylacrylate gel induced by gamma irradiation. Nuclear Science and Techniques, 19 (4). pp. 218-222. ISSN 1001-8042
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Official URL: http://dx.doi.org/10.1016/S1001-8042(08)60053-6
The rate of elapsed polymerization of polyhydroxyethylacrylate in gelatin has been studied to investigate the effect of co-monomers consumption at a given dose. The polymer gel dosimeters consisted of 2%-4% N,N-methyelene-bis-acrylamide cross-linker, 2%-4% 2-hydroxyethylacrylate monomer and gelatin at 3% and 5%. The dosimeters were irradiated by using 60Co teletherapy γ-ray source up to 20 Gy at a constant dose rate. The relaxation rate of water proton in the dosimeters at different doses and co-monomer concentrations were measured using a nuclear magnetic resonance spectroscopy. The rate of elapsed polymerization decreases with increasing the dose and the initial concentration of co-monomers. The rate of consumption of co-monomers increases with an increase of the polymerization and the gelatin content of the polymer gel.
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