Temperature dependence of self diffusion of polystyrene and polyethylene in the melt an interpretation in terms of the free volume theory
β Scribed by Gerald Fleischer
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 285 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0170-0839
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Positron lifetime measurements, performed in the temperature range 80-300 K, are reported for polyethylene (PE) and polytetrafluoroethylene (PTFE). The lifetime spectra have been analyzed using the data processing routines LIFSPECFIT and MELT. Two long-lived components appear, which are attributed t
## 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