Radiation synthesis of superabsorbent polyethylene oxide/tragacanth hydrogel |
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| Institution: | 1. School of Materials Science and Engineering, Fujian University of Technology, 3 Xueyuan Road, Fuzhou 350108, PR China;2. Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 3 Xueyuan Road, Fuzhou 350108, PR China;1. Nuclear and Energy Research Institute-IPEN-CNEN/SP, Av. Professor Lineu Prestes, 2242, Cidade Universitária, CEP 05508-000, São Paulo, SP, Brazil;2. Laboratório de Restauração do Palácio dos Bandeirantes endereço, Avenida Morumbi, 4500, São Paulo, SP, Brazil;1. Institute for Energy Security and Environmental Safety, Centre for Energy Research, Hungarian Academy of Sciences, Budapest, Hungary;2. Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary;3. Faculty of Light Industry and Environmental Engineering, Obuda-University, Hungary |
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| Abstract: | A new superabsorbent hydrogel has been prepared from tragacanth and polyethylene oxide (PEO) by gamma radiation at room temperature. Tragacanth solutions with different concentrations (1%, 3% and 5%) have been blended with 5% aqueous solution of PEO at a ratio of 1:1 and irradiated at doses 5–20 kGy. The properties of the prepared composite hydrogels were evaluated in terms of the gel fraction and the swelling behavior. An unexpected growth of the gel fraction was observed in PEO/tragacanth hydrogels irradiated at 5 kGy. Incorporation of 5% tragacanth into the aqueous PEO increased significantly the swelling percent of the hydrogels to more than 14,000% and thus makes it a superabsorbent material. |
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