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Diffusion in Glassy Polymers: Sorption of a Finite Amount of Solvent

✍ Scribed by Patrick Guidotti

Publisher
SP Birkhäuser Verlag Basel
Year
1999
Tongue
English
Weight
352 KB
Volume
6
Category
Article
ISSN
1021-9722

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Sorption of gases in glassy polymers: A
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## Abstract The description of the sorption mechanism of gases in glassy in glassy polymers is of importance for membrane‐based gas separation processes as well as for packaging applications. Dual mode theory, postulating a Henry and Langmuir process to occur and leading to an equation with three a

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Small molecules in glassy polymers are considered to occupy sites with a distribution of free energies of dissolution. Then their diffusivity depends on concentration and temperature in the same way as it has been derived for hydrogen atoms in metallic glasses. For hydrogen it was shown that the tra