Diffusion of small molecules in glassy p
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M. PΓΆnitsch; P. Gotthardt; A. GrΓΌger; H. G. Brion; R. Kirchheim
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Article
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1997
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John Wiley and Sons
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English
β 255 KB
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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