SDS Volume (3940)

Volume 70. Solubility of Gases in Glassy Polymers, p None

Original Measurements

Pope, D. S.; Feming, G. K.; Koros, W. J.; Macromolecules 23, 2988 (1990).

Variables:

Room Temp: 308 $\pu{K}$
Pressure: 0 - 6.89 $\pu{MPa}$

Prepared by:

Yu.P. Yampol'skii

Method/Apparatus/Procedure:

Two methods of conditioning were studied. Conventionally conditioned isotherms were obtained with the samples which had been previously in contact with $\ce{CO2}$ gas under pressure of 6.21 MPa for 2—3 h with consequent pumping for two days. Both isotherms were obtained by the pressure decay method [1]. Exchange conditioning involved exposing the samples to $\ce{CO2}$ gas and then sweeping it by a $\ce{CH4}$ flux with the subsequent gravimetric determination of sorption.

Source and Purity of Materials:

1. $\ce{CH4}$: purity >99.99%. PC: General Electric Co., $\rho = \pu{1.200 g mL-1}$, $T_{\rm{g}}$ = 423 K.

Estimated Errors:

Ambient temperature: No information given.

References

¹ Koros, W. J.; Paul, D. R.; J. Polym. Sci., Polym. Phys. Ed., 1976, 14, 1903.