SDS Volume (4025)
Volume 70. Solubility of Gases in Glassy Polymers, p None
Original Measurements
Variables:
Room Temp:
308 - 383
$\pu{K}$
Pressure:
0 - 3.0
$\pu{MPa}$
Prepared by:
Method/Apparatus/Procedure:
Apparatus and procedure of sorption measurement was similar to one described in [1].
Source and Purity of Materials:
- Films of the polymer prepared from BPDA and ODA in $p$-chlorphenol were cast from the same solvent, dried (373 K, three hours), immersed in ethanol, dried once more at 443 K for 20 hrs (Sample (1)). Sample (2) was prepared by annealing it at 543 K, three hours. Commercial Upilex-R (Ube Industries) had $T_{\rm{g}}$ = 558 K, $\rho = \pu{1.402 g mL-1}$. Sample (1) had the same $T_{\rm{g}}$.
References
1 Koros, W. J.; Paul, D. R.; J. Polym. Sci., Polym. Phys. Ed., 1976, 14, 1903.
Components:
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Polyimide of BPDA and ODA, [26615-45-2] NIST WebBook
Experimental Data
Dual mode sorption parameters for CO2 in commercial and laboratory samples of BPDA-ODA polyimides
| $T$ ($\pu{K}$) | $k_{\rm{D}}$ ($\pu{cm3(g) cm-3(s) atm-1}$) | $C_{\rm{H}}^{\prime}$ ($\pu{cm3/cm3}$) | $b$ ($\pu{atm-1}$) |
|---|---|---|---|
| 308 | 0.596 | 12.0 | 0.478 |
| 323 | 0.456 | 10.3 | 0.348 |
| 353 | 0.335 | 5.9 | 0.252 |
| 383 | 0.254 | 3.4 | 0.162 |
| 323 | 0.609 | 17.9 | 0.392 |
| 353 | 0.449 | 10.6 | 0.236 |
| 353 | 0.316 | 11.0 | 0.167 |
| 383 | 0.327 | 7.0 | 0.140 |
| 353 | 0.267 | 4.7 | 0.216 |
