Permeation of water vapour through polyethylene terephthalate (PET) films for back-sheets of photovoltaic modules

Philip Hülsmann, Gernot Wallner

Research output: Contribution to journalArticlepeer-review

Abstract

Different polyethylene terephthalate films were investigated as to the permeation and diffusity for water vapour and as to structure-property correlations. Water vapour transmission rate, permeability and diffusion coefficient were measured at temperatures 23, 38, 60 and 80 °C using a special test device with a mass spectrometer detection unit. While the permeability was significantly dependent on temperature and specimen thickness, the effect of TiO2 white pigmentation was negligible. Based on the empirical data a model for the temperature and film thickness dependency of the water vapour permeability was established and validated.
Original languageEnglish
Pages (from-to)153-158
Number of pages6
JournalPolymer Testing
Volume58
DOIs
Publication statusPublished - 2017

Fields of science

  • 205 Materials Engineering
  • 205011 Polymer engineering
  • 205016 Materials testing
  • 207106 Renewable energy
  • 211908 Energy research
  • 103023 Polymer physics
  • 104018 Polymer chemistry
  • 211909 Energy technology
  • 104019 Polymer sciences

JKU Focus areas

  • Nano-, Bio- and Polymer-Systems: From Structure to Function

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