SDS Volume (4023)
Volume 70. Solubility of Gases in Glassy Polymers, p None
Original Measurements
Tanaka, K.; Kita, H.; Okamoto, K.; Japan - US Polymer Symposium, p. 249-250 (1985).
Variables:
Room Temp:
323 - 383
$\pu{K}$
Pressure:
0 - 2.0
$\pu{MPa}$
Prepared by:
Method/Apparatus/Procedure:
Sorption was measured by the pressure decay method. The same isotherms were obtained for 'as received' samples and the specimens preliminary exposed to 50 atm of carbon dioxide at 323 K for 24 h.
Source and Purity of Materials:
- Polyimide Upilex R (Ube Industries) had $T{\rm{g}}$ = 558 K.
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*
| $T$ ($\pu{K}$) | $k_{\rm{D}}$ ($\pu{cm3(g) cm-3(s) atm-1}$) | $C_{\rm{H}}^{\prime}$ ($\pu{cm3/cm3}$) | $b$ ($\pu{atm-1}$) |
|---|---|---|---|
| 323 | 0.50 | 8.6 | 0.44 |
| 353 | 0.35 | 5.0 | 0.30 |
| 383 | 0.25 | 3.0 | 0.19 |
(*) Read by the compiler from the plot.
