Principle

Permeation of liquids and gases through polymer films.

Permeation process in dense polymers is driven by solubility and diffusion and can be divided in three steps: sorption of the permeant on the surface of the film; diffusion of the permeant from the high concentration side of the film to the low concentration side; desorption of the permeant from the low concentration surface.

Capabilities

  • Gas permeability up to 120°C and 2 bar pressure according to ISO15105-1 (method A)
  • Liquid permeability with cup method according to ISO 6179.
  • Permeability to salts, acids or bases dissolved in water up to 80°C.

Assets


AssetDetails

Gas Permeometer

Permeation to single gases (not mixtures) of polymer films

Weighing cupsPermeation of liquids, both pure and mixtures

Cells for water solutionsPermeation of salts, acids and bases dissolved in water


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