SDS Volume (3947)
Volume 70. Solubility of Gases in Glassy Polymers, p None
Original Measurements
Pope, D. S.; Feming, G. K.; Koros, W. J.; Macromolecules 23, 2988 (1990).
Variables:
Room Temp:
308
$\pu{K}$
Pressure:
0 - 5
$\pu{MPa}$
Prepared by:
Method/Apparatus/Procedure:
Two methods of conditioning were studied. Conventionally conditioned isotherms were obtained with the samples which had been previously in contact with $\ce{CO2}$ gas under pressure of 6.21 MPa for 2-3 h with consequent pumping for two days. Exchange conditioning runs a gravimetric technique was used. In two other types of experiments a pressure decay method was applied [1].
Source and Purity of Materials:
- $\ce{CH4}$: purity 99.99%. TMPC: Dow Chemical Co., $\rho = \pu{1.08 g mL-1}$, $T_{\rm{g}}$ = 476 K.
Estimated Errors:
Ambient temperature: No information given.
References
1 Koros, W. J.; Paul, D. R.; J. Polym. Sci., Polym. Phys. Ed., 1976, 14, 1903.
Components:
- Methane, $\ce{ CH4 }$; [74-82-8] NIST WebBook
- Tetramethylpolycarbonate (TMPC), [38797-88-5] NIST WebBook
Experimental Data
Sorption isotherms of methane at 308 K in unconditioned , conventionally conditioned, and exchange-conditioned samples of TMPC (The original data were represented graphically)
| $P$ ($\pu{MPa}$) | $\pu{Sorption}$ ($\pu{V_{1}/V_{2}}$) |
|---|---|
| 0.42 | 4.82 |
| 0.93 | 8.25 |
| 1.49 | 11.04 |
| 2.05 | 13.20 |
| 2.60 | 15.15 |
| 3.12 | 16.79 |
| 3.72 | 18.52 |
| 4.31 | 20.04 |
| 4.94 | 21.45 |
| 0.72 | 9.44 |
| 1.77 | 15.67 |
| 2.89 | 20.73 |
| 3.83 | 24.11 |
| 4.87 | 27.17 |
| 0.52 | 9.25 |
| 1.07 | 14.90 |
| 1.77 | 20.21 |
| 2.47 | 24.26 |
| 3.06 | 26.84 |
| 3.80 | 29.83 |
| 4.48 | 32.29 |
