Different mechanisms of gas transfer
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Different mechanisms of gas transfer |
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Driving force |
Closure material |
Presence or absence of a leak |
Mechanism of gas transfer |
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Difference in total and partial pressure |
Impermeable for gasses and vapours |
No leak |
No gas transfer |
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Leak |
Convection |
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Permeable for gasses and vapours |
No leak |
Permeability |
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Leak |
Convection and permeability |
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No difference - in total pressure, but difference in partial pressure |
Impermeable for gasses and vapours |
No leak |
No gas transfer |
|
Leak |
Diffusion |
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Permeable for gasses and vapours |
No leak |
Permeability |
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Leak |
Permeability and Diffusion |