Compilation - Carbon dioxide with Methane, Copoly(pyromellitic dianhydride-oxydianiline) PMDA (polyimide Kapton H) (IUPAC SDS Volume 70)
SDS Volume (4017)
Volume 70. Solubility of Gases in Glassy Polymers, p None
Original Measurements
O'Brien, K. C.; Koros, W. J.; Husk, G. R.; J. Membr. Sci. 35, 217 (1988).
Variables:
Room Temp:
308
$\pu{K}$
Pressure:
0.1 - 1.4
$\pu{MPa}$
Prepared by:
Method/Apparatus/Procedure:
Sorption measurements were carried out using a single transducer apparatus described in [1].
Source and Purity of Materials:
- PMDA-ODA: polymerization performed in dimethylacetamide at $\pu{288-293 K}$ to form polyamic acid precursor according to standard procedure. The polyamic acid solution was wet cast on a glass substrate heated for one hour at $\pu{353 K}$ under $\ce{Ar}$ to remove the solvent and then imidized by a two-step cure under vacuum ($\pu{24 hrs}$) at $\pu{483 K}$ and four hours at $\pu{553 K}$). The polymer studied did not reveal a glass transaction temperature at temperatures up to 750 K. $\rho = \pu{1.402 g mL-1}$.
Estimated Errors:
Mass concentration (m/v) (1): Relative precision of solubilities: 5%.
References
1
Sanders, S. E.; Ph.D. Dissertation, North Carolina State University, Raleigh, NC, 1983.
2
Sroog, C. E.; Endrey, A. L.; Abravio, S. V.; Berro, C. E.; Edwards, W. M.; Olivier, K. L.; J. Pol. Sci., Part A 3, 1373 (1965).
Components:
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Methane, $\ce{ CH4 }$; [74-82-8] NIST WebBook
- Copoly(pyromellitic dianhydride-oxydianiline) (PMDA-ODA), [25036-53-7] NIST WebBook
Experimental Data
Sorption isotherms of carbon dioxide and methane in PMDA-ODA at 308 K (The original data were represented graphically)
| $P$ ($\pu{MPa}$) | $\pu{Sorption}$ ($\pu{V_{1}/V_{2}}$) |
|---|---|
| 0.16 | 14.36 |
| 0.36 | 22.17 |
| 0.52 | 26.96 |
| 0.76 | 32.12 |
| 0.98 | 36.22 |
| 1.37 | 42.11 |
| 0.21 | 3.21 |
| 0.31 | 4.46 |
| 0.47 | 5.84 |
| 0.71 | 7.36 |
| 0.91 | 8.61 |
| 1.00 | 9.07 |
| 1.12 | 9.80 |
