Anomalous diffusion of water in glassy polymers
β Scribed by G.A Pogany
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 599 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0032-3861
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π SIMILAR VOLUMES
In this article, a mathematical model is proposed for predicting solvent self-diffusion coefficients in amorphous glassy polymers based on free volume theory. The basis of this new model involves consideration of the plasticization effects induced by small molecular solvents to correctly estimate th
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