Rate of elapsed polymerization of hydroxyethylacrylate gel induced by gamma irradiation

• Main Authors: Ahmed Rabaeh, Khalid, Saion, Elias, Ahmed Ali Omer, Mohammad, Abdul Rahman, Azhar, Yusif Hussain, Mohammad, Iskandar, Shahrim, Mohammad Ali, Noria
• Format: Article
• Language: English; English
• Published: Elsevier 2008
• Online Access: http://psasir.upm.edu.my/id/eprint/6704/1/Rate%20of%20elapsed%20polymerization%20of%20hydroxyethylacrylate%20gel%20induced%20by%20gamma%20irradiation.pdf; http://psasir.upm.edu.my/id/eprint/6704/; 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.