Sorption and diffusion of carbon dioxide in polyimide films
โ Scribed by E. Sada; H. Kumazawa; P. Xu
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 544 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0021-8995
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๐ SIMILAR VOLUMES
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
The sorption and transport properties of C 0 2 in miscible PS/PVME blends at 20ยฐC are reported as a function of pressure from 1 to 15 atm. The complex shape of isotherms for glassy blends and the concentration-dependent diffusion coefficient for rubbery blends reveal a plasticization by sorbed COP.
The water sorption behavior and the activation energy were investigated for various chemical structure polyimide thin films; BPDA-PDA, BPDA-ODA, PMDA-ODA, and 6FDA-ODA. The activation energy for the water diffusion varied in the range of 5.53 to 9.27kcal/mol, and was in the increasing order: BPDA-PD