The development of a new model for the diffusion of gas molecules in glassy polymers is presented which utilizes concepts from free volume theory and relies on a dual-mode interpretation of sorptive dilation in glassy polymers. Three assumptions are made in the development of the model. First, the f
Determination of free-volume parameters from diffusivity data in glassy polymers
β Scribed by J. S. Vrentas; J. L. Duda; A.-C. Hou
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 337 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
Several versions of free-volume theory have been proposed to correlate or predict the solvent diffusion coefficient of a polymer/solvent system. The quantity of free volume is usually determined by the Williams-Landel-Ferry (WLF) equation from viscosity data of the pure component in these theories.
## Abstract A new method has been developed to determine the probability of miscibility in binary polymer blends through hydrodynamic interaction. This is achieved by the measurement of the free volume content in blends of carefully selected systemsβstyrene acrylonitrile (SAN)/poly(methyl methacryl
## Model development for transient permeation In the experimental differential permeation technique, the upstream face of a dry polymer sheet is put into contact