Components:
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(1) Methane,
CH4; [74-82-8]
NIST WebBook
(2) Poly(methyl methacrylate),
(C17H23NO6)n; [9011-14-7]
NIST WebBook
(3) Bisphenol chloral polycarbonate,
None; [31546-39-1]
NIST WebBook
Original Measurements
Raymond, P. C.; Paul, D. R.; J. Polym. Sci. B: Polym. Phys. 28, 2103 (1990).
Variables:
Ambient temperature: 308 K
Pressure: 0 - 2.5 MPa
Prepared by:
Method/Apparatus/Procedure:
A pressure decay method was used. Methane sorption was measured on samples that had not previously been exposed to CO2. For CO2 these measurements were preceded by conditioning the films at 25 atm of CO2 for 24 h.
Source and Purity of Materials:
- BCPC: General Electric Co.
PMMA: Rohm and Haas Co.
PMMA mass%, Tg/K, density/g cm-3
0 437 1.392
25 413 1.336
50 401 1.285
75 386 1.235
100 379 1.188
Estimated Errors:
Ambient temperature: No information given.
Experimental Values:
Dual mode sorption parameters for carbon dioxide and methane in polymers at 308 K
| H (cm3(g) cm-3(s) atm-1) | C'H (cm3/cm3) | b (atm-1) |
|---|---|---|
| 7.18 x 10-1 | 14.9 | 2.71 x 10-1 |
| 7.36 x 10-1 | 14.8 | 2.40 x 10-1 |
| 7.78 x 10-1 | 15.7 | 1.90 x 10-1 |
| 1.03 | 11.9 | 2.45 x 10-1 |
| 1.2 | 15.6 | 1.72 x 10-1 |
| 1.30 x 10-1 | 6.64 | 8.8 x 10-2 |
| 1.16 x 10-1 | 6.92 | 6.9 x 10-2 |
| 1.44 x 10-1 | 4.58 | 7.7 x 10-2 |
| 1.33 x 10-1 | 4.6 | 6.1 x 10-2 |
| 1.99 x 10-1 | 1.53 | 1.53 x 10-1 |
None
None
