The applicability of the concept of free volume to processes of glass transition in incompatible polymer mixtures
β Scribed by Yu.S. Lipatov; V.A. Vilenskii
- Book ID
- 118964861
- Publisher
- Elsevier Science
- Year
- 1975
- Weight
- 470 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0032-3950
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π SIMILAR VOLUMES
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
## Abstract Theories based on freeβvolume concepts have been developed to characterize the self and mutualβdiffusion coefficients of low molecular weight penetrants in rubbery and glassy polymerβsolvent systems. These theories are applicable over wide ranges of temperature and concentration. The ca