NMR imaging of Case II diffusion in glassy polymers
β Scribed by A. Weisenberger; J. L. Koenig
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1989
- Tongue
- English
- Weight
- 279 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0887-6258
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π SIMILAR VOLUMES
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
## Abstract The current theoretical treatment of diffusion of gases in glassy polymers is based on the βdual sorptionβ model, but also includes certain other important assumptions, at least some of which cannot be fully justified __a priori__. They require experimental validation, which, however, i