Neutron scattering experiments on the glass transition of polymers
โ Scribed by R. Zorn; D. Richter; B. Frick; B. Farago
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 953 KB
- Volume
- 201
- Category
- Article
- ISSN
- 0378-4371
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๐ SIMILAR VOLUMES
The sol-gel-glass transition of atactic polystyrene in carbon disulfide over a wide temperature range from 170 to 300 K has been investigated by neutron quasielastic scattering methods. A drastic narrowing of the quasielastic peaks was observed for the present system as the temperature is lowered a
The magnitude of the activation energy for diffusion, ED. is shown to be inversely dependent on the fractional free volume of the polymer above Tg. From the proportionality of ED above and below Tg, the magnitude of El, below T, is also inversely dependent on the free volume in that temperature rang