Demonstration of a novel,flexible, photocatalytic oxygen-scavenging polymer film |
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| Institution: | 1. Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK;2. Department of Chemistry, Imperial College London, Exhibition Road, London SW7 2AZ, UK;1. Department of Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany;2. Post-harvest and Agro-processing Technologies, Agricultural Research Council (ARC), Infruitec-Nietvoorbij, Stellenbosch, South Africa;3. Department of Food Biotechnology and Food Process Engineering, Technical University of Berlin, Germany;4. McAirlaid’s Vliesstoffe GmbH, Berlingerode, Germany;1. Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran;2. Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran;3. Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran |
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| Abstract: | The preparation of a novel, flexible, photocatalytic, oxygen-scavenging polymer film is described. The film incorporates nanocrystalline titania particles in an ethyl cellulose polymer film, with or without an added sacrificial electron donor of triethanolamine. When coated on the inside of a glass vessel its UV-driven light-scavenging action is demonstrated by platinum octaethyl porphyrin coated glass beads sealed inside, since their luminescence increases with increasing UV-irradiation time. When used as a flexible film, work with an oxygen electrode shows that the film is able to scavenge oxygen at an average rate of 0.017 cm3 O2 h?1 cm?2 over a 24 h period, which compares favourably to other, well-established oxygen-scavenger systems. The potential of using such as system for oxygen scavenging in packaging is discussed briefly. |
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