Pressure-dependent solubility and diffusion coefficients for carbon dioxide in glassy polymers have been well described using the ''dual sorption and transport model.'' However, the plastisization effect by high-pressure carbon dioxide seems to promote the pressure dependence of the sorption and tra
Gas sorption and diffusion processes in polymer matrices at high pressures
β Scribed by M. A. Krykin; V. I. Bondar; Yu. M. Kukharsky; A. V. Tarasov
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 215 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0887-6266
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β¦ Synopsis
A theoretical approach has been developed to describe the processes of gases diffusion and sorption in rubbery and glassy polymers. Various models (Flory-Huggins, dual-mode sorption, gas-polymer-matrix) used for interpreting the sorption-diffusion experiments are discussed within this approach framework. Experimental data on carbon dioxide sorption in glassy and rubbery polymers have been considered using the proposed approach. The comparison of the experimental and theoretical data has permitted to make the conclusion on the developed concepts adequacy.
π SIMILAR VOLUMES
A theoretical approach has been developed to describe the sorption and diffusion processes of low weight molecular gases and vapors in polymers at wide ranges of sorbate concentration. The equation of an S-shaped gas sorption isotherm in glassy polymer matrix has been derived. The concentration depe
## Abstract A mathematical model considering reaction and diffusion processes in biofuel cells, such as enzyme reactions, apparent electron diffusion in the redox polymer, and diffusion of a substrate in a redox polymer film, verified the effectiveness of a highβsurfaceβarea biofuel cell electrode