Modified Free-Volume Theory of Penetrant Diffusion in Polymers
β Scribed by Frisch, H. L.; Klempner, D.; Kwei, T. K.
- Book ID
- 121350617
- Publisher
- American Chemical Society
- Year
- 1971
- Tongue
- English
- Weight
- 188 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0024-9297
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π SIMILAR VOLUMES
Iodine diffusion in ion-modified polyethylene (PE) using the Rutherford Backscattering method (RBS) has been studied. P E was irradiated by N+, Ar+ and As+ ions with an energy of 150 keV and doses of 1 X 1013-1 X 1015 cm12. Iodine diffused in ion-modified PE from vapor at 9OoC. Iodine's concentratio
Several versions of free-volume theory have been proposed to correlate or predict the solvent diffusion coefficient of a polymer/solvent system. The quantity of free volume is usually determined by the Williams-Landel-Ferry (WLF) equation from viscosity data of the pure component in these theories.