Components:
(1) Copoly(pyromellitic dianhydride-isopropylidine dianiline) PMDA-IPDA,
None; [poly-006]
NIST WebBook
(1) Nitrogen (Molecule),
N2; [7727-37-9]
NIST WebBook
(2) Methane,
CH4; [74-82-8]
NIST WebBook
Original Measurements
Kim, T. H.; Koros, W. J.; Husk, G. R.; O'Brien, K. C.; J. Appl. Polym. Sci. 34, 1767 (1987).
Variables:
Ambient temperature: 308 K
Pressure: 0 - 2.1 MPa
Prepared by:
Method/Apparatus/Procedure:
The pressure decay method of measurement of sorption was described in Ref. 1.
Source and Purity of Materials:
- PMDA-IPDA: prepared by reaction of pyromellitic dianhydride with isopropylidene diamine. No details on synthesis or properties of the polymer are given.
Estimated Errors:
Ambient temperature: No information given.
References
1 Koros, W. J.; Paul, D. R.; J. Polym. Sci., Polym. Phys. Ed., 1976, 14, 1903.
Experimental Values:
Sorption isotherms of methane and nitrogen in PMDA-IPDA at 308 K (The original data were represented graphically)
| P (MPa) | Sorption (V1/V2) |
|---|---|
| 6.0 x 10-1 | 10.01 |
| 1.05 | 13.62 |
| 1.53 | 16.44 |
| 2.02 | 18.47 |
| 2.9 x 10-1 | 1.55 |
| 4.7 x 10-1 | 2.29 |
| 5.5 x 10-1 | 2.54 |
| 7.6 x 10-1 | 3.36 |
| 8.3 x 10-1 | 3.7 |
| 1.17 | 4.84 |
| 1.51 | 5.99 |
| 1.81 | 6.84 |
| 2.09 | 7.51 |
