Rate of elapsed polymerization of hydroxyethylacrylate gel induced by gamma irradiation |
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Authors: | Khalid Ahmed RABAEH Elias SAION Mohammad Ahmed Ali OMER Azhar Abdul RAHMAN Mohammad Yusif HUSSAIN Shahrim ISKANDAR Noria Mohammad ALI |
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Affiliation: | 1. Department of Physics,Universiti Putra Malaysia 43400 UPM Serdang,Selangor,Malaysia 2. Nuclear Agency of Malaysia,43000 Kajang,Selangor,Malaysia |
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Abstract: | 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-acrylamJde cross-linker,2%-4% 2-hydroxyethylaerylate monomer and gelatin at 3% and 5%,The dosimeters were irradiated by using 60Co teletherapy Y-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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Keywords: | Elapsed polymerization Relaxation rate Consumption rate Polymer gel dosimeter |
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