Freezing-in of molecular mobility of small molecules (probes) in glassy polymers and secondary relaxation transitions
β Scribed by A. B. Remizov; D. I. Kamalova
- Book ID
- 110197245
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2007
- Tongue
- English
- Weight
- 212 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0965-545X
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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 rotational mobility of molecules in glassy polymers was investigated by quantitative simulations of electron spin resonance spectra of nitroxide spin probes with molecules of different sizes. The motional models were determined unambiguously when the experimental and calculated spec