Effect of electron beam irradiation on the viscosity of carboxymethylcellulose solution |
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Authors: | Jong-il Choi Jae-Hun Kim Young-Jin Chung Ju-Woon Lee |
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Affiliation: | a Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 1266 Sinjeong-dong, Jeongeup 580-185, Republic of Korea b Department of Orthopaedic Surgery, Eulji University School of Medicine, Daejeon 302-799, Republic of Korea c Department of Food and Nutrition, Chungnam National University, Daejeon 305-764, Republic of Korea |
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Abstract: | In this study, the effects of an electron beam irradiation on the viscosity of a carboxymethylcellulose (CMC) solution were investigated. The viscosity of the CMC solution was decreased with an increase in the irradiation dose. Interestingly, the extent of the degradation of the CMC was found to decrease with an increase of the CMC concentration in the solution. The change of the average molar mass confirmed the decrease in the viscosity due to the degradation of the polymer. The energy of the electron beam also affected the degradation of the CMC. Lower degradation of the CMC was obtained with a decreasing electron beam energy due to its lower penetration. Addition of vitamin C as a radical scavenger to the solution and an irradiation at −70 °C were shown to be moderately effective in preventing a decrease in the viscosity of the solution by irradiation. |
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Keywords: | 61.25.He 61.80.&minus x |
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