Components:
(1) Neon,
None; [7440-01-9]
NIST WebBook
(1) Argon,
Ar; [7440-37-1]
NIST WebBook
(1) Hydrogen,
H2; [1333-74-0]
NIST WebBook
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(2) Polyundecaneamide,
(C11H21NO)n; [25035-04-5]
NIST WebBook
Original Measurements
Ash, R.; Barrer, R. M.; Palmer, D. G.; Polymer 11, 421-435 (1970).
Variables:
Ambient temperature: 293.2 - 333.2 K
Pressure: 6.65 - 33.25 kPa
Prepared by:
Method/Apparatus/Procedure:
After the equilibrium was attained the remaining gas was swept by mercury. The measurement of the pressure of gas desorbed was performed by means of McLeod type gauge. Corrections for loss of gas by desorption during flushing process were introduced.
Source and Purity of Materials:
- Nylon 11 was obtained from Griflex Ltd. Gases (British Oxygen Co) were spectrally pure.
Estimated Errors:
Ambient temperature: ±0.1 K
Mass concentration (m/v) (1): ±0.02
Experimental Values:
Solubility isotherms obeyed Henry's law; the solubility coefficients S /(cm3/cm3 atm) determined from their slopes are given below, as well as the enthalpies of solution DH /(kcal/mol)
| T (K) | β (cm3(g) cm-3(s) atm-1) | ΔH (kcal/mol) |
|---|---|---|
| 293.2 | 5.4 x 10-3 | 1.0 |
| 303.2 | 5.6 x 10-3 | 1.0 |
| 313.2 | 6.2 x 10-3 | 1.0 |
| 323.2 | 6.5 x 10-3 | 1.0 |
| 333.2 | 6.6 x 10-3 | 1.0 |
| 313.2 | 3.91 x 10-2 | -4 x 10-1 |
| 323.2 | 3.88 x 10-2 | -4 x 10-1 |
| 333.2 | 3.77 x 10-2 | -4 x 10-1 |
| 293.2 | 1.45 x 10-2 | 5 x 10-1 |
| 303.2 | 1.48 x 10-2 | 5 x 10-1 |
| 313.2 | 1.50 x 10-2 | 5 x 10-1 |
| 323.2 | 1.58 x 10-2 | 5 x 10-1 |
| 333.2 | 1.63 x 10-2 | 5 x 10-1 |
| 313.2 | 3.68 x 10-1 | -3.2 |
| 323.2 | 3.14 x 10-1 | -3.2 |
| 333.2 | 2.80 x 10-1 | -3.2 |
