Demonstration of a novel, flexible, photocatalytic oxygen-scavenging polymer film

A. Mills, Gerry Doyle, Ana M. Peiro, James R. Durrant

Research output: Contribution to journalArticle

37 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)328-331
Number of pages3
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume177
Issue number2-3
DOIs
Publication statusPublished - 25 Jan 2006

Keywords

  • polymer
  • photocatalysis
  • oxygen-scavenging
  • titania

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