Components:
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(2) Poly(p-acetoxystyrene),
None; [24979-78-0]
NIST WebBook
Original Measurements
Puleo, A. C.; Muruganandam, N.; Paul, D. R.; J. Polym. Sci. B: Polym. Phys. 27, 2385 (1989).
Variables:
Ambient temperature: 308 K
Pressure: 0.2 - 2.0 MPa
Prepared by:
Method/Apparatus/Procedure:
The apparatus and procedure in sorption measurements were the same as those described in Ref. 1.
Source and Purity of Materials:
- Polymer: Celasese Chemical Co., glass transition temperature 399 K, Mw = 250 000, density 1.168 g/cm3.
Estimated Errors:
Ambient temperature: No information given.
References
1 Koros, W. J.; Chan, A. H.; Paul, D. R.; J. Membr. Sci. 2, 165 (1977).
Experimental Values:
Table 1. Dual mode sorption parameters for carbon dioxide at 308 K
| H (cm3(g) cm-3(s) atm-1) | C'H (cm3/cm3) | b (atm-1) | Method |
|---|---|---|---|
| 1.24 | 5.65 | 4.31 x 10-1 | 1st cycle |
| 7.69 x 10-1 | 16.82 | 2.21 x 10-1 | 2nd cycle |
Table 2. Sorption isotherms of carbon dioxide at 308 K (The original data were represented graphically)
| P (MPa) | Sorption (V1/V2) | Comment |
|---|---|---|
| 3.5 x 10-1 | 7.15 | 1st cycle |
| 6.7 x 10-1 | 11.15 | 1st cycle |
| 9.5 x 10-1 | 14.71 | 1st cycle |
| 1.19 | 18.03 | 1st cycle |
| 1.41 | 20.92 | 1st cycle |
| 1.56 | 22.89 | 1st cycle |
| 1.94 | 27.0 | 1st cycle |
| 1.7 x 10-1 | 5.38 | 2nd cycle |
| 3.8 x 10-1 | 9.2 | 2nd cycle |
| 6.5 x 10-1 | 13.13 | 2nd cycle |
| 9.3 x 10-1 | 16.82 | 2nd cycle |
| 1.24 | 20.07 | 2nd cycle |
| 1.5 | 23.08 | 2nd cycle |
| 1.9 | 26.19 | 2nd cycle |
