SDS Volume (4109)
Volume 70. Solubility of Gases in Glassy Polymers, p None
Original Measurements
Volkov, V. V.; Durgaryan, S. G.; Novitskii E. G.; Nametkin, N. S.; Dokl. Akad. Nauk USSR 232, 838 (1977).
Volkov, V. V.; Nametkin, N. S.; Novitskii, E. G.; Durgaryan, S. G.; Vysokomol. Soedin. Ser. A 21, 920-931 (1979).
Variables:
Room Temp:
283 - 323
$\pu{K}$
Pressure:
0 - 93
$\pu{kPa}$
Prepared by:
Method/Apparatus/Procedure:
A McBain quartz spring microbalance and a volumetric apparatus were used for sorption measurements.
Source and Purity of Materials:
- PVTMS synthesized by $\ce{BuLi}$ initiated anionic polymerization had: $M_{\rm{w}}$ = 608,000, $M_{\rm{n}}$ = 416,000. All the gases were "chromatographically" pure.
Estimated Errors:
Mass concentration (m/v) (1): 10%.
Pressure: 20%.
Components:
- Hydrogen, $\ce{ H2 }$; [1333-74-0] NIST WebBook
- Helium, $\ce{ He }$; [7440-59-7] NIST WebBook
- Methane, $\ce{ CH4 }$; [74-82-8] NIST WebBook
- Nitrogen (Molecule), $\ce{ N2 }$; [7727-37-9] NIST WebBook
- Oxygen, $\ce{ O2 }$; [7782-44-7] NIST WebBook
- Argon, $\ce{ Ar }$; [7440-37-1] NIST WebBook
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Poly(vinyltrimethyl silane) (PVTMS), $\ce{ (C5H12Si)n }$; [25036-32-2] NIST WebBook
Experimental Data
Solubility coefficients S/(cm3(STP)/cm3 atm) at 298 K and enthalpies of sorption ΔH kcal/mol
| $S$ ($\pu{cm3(g) cm-3(s) atm-1}$) | $\Delta H$ ($\pu{kcal/mol}$) |
|---|---|
| 1.1 x 10-3 | -1.45 |
| 6.3 x 10-3 | -2.83 |
| 1.2 x 10-3 | -1.66 |
| 4.0 x 10-3 | -2.62 |
| 5.6 x 10-3 | -2.69 |
| 0.0137 | -3.82 |
| 0.0352 | -4.93 |
