Components:
(1) Nitrogen (Molecule),
N2; [7727-37-9]
NIST WebBook
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(1) Butane,
C4H10; [106-97-8]
NIST WebBook
(2) Poly(vinyl chloride),
(C2H3Cl)n; [9002-86-2]
NIST WebBook
Original Measurements
Berens, A. R.; Polym. Eng. Sci. 20, 95 (1980).
Variables:
Ambient temperature: 298 - 303 K
Pressure: 0 - 100 kPa
Prepared by:
Method/Apparatus/Procedure:
Gravimetric sorption experiments were carried out using a Cahn microbalance and, for highly sorbing gases like butane, a vacuum system described in Ref. 1. For nitrogen and partly for carbon dioxide a volumetric gas sorption method was used by means of Digisorb 2500 automatic surface area analyzer (Micrometrics Instruments Corp.)
Source and Purity of Materials:
- Gases: research grade purity.
PVC: obtained by suspension and emulsion techniques (in the form of powder), density 1.404 ±0.014 g/cm3.
"Never-heated" samples: recovered and dried at temperature not exceeding 273 K.
"Heat-treated" samples: heated 1 h at 373 K.
Estimated Errors:
Ambient temperature: No information given.
References
Experimental Values:
Table 1. Concentration isotherms of CO2 in emulsion PVC at 298 K (gravimetric data). (The original data were represented graphically)
| P1 (kPa) | C1 (g/kg) | Comment |
|---|---|---|
| 7.57 | 3.6 x 10-1 | Never-heated |
| 13.98 | 6.7 x 10-1 | Never-heated |
| 28.37 | 1.29 | Never-heated |
| 41.41 | 1.76 | Never-heated |
| 55.25 | 2.22 | Never-heated |
| 68.51 | 2.61 | Never-heated |
| 87.78 | 2.98 | Never-heated |
| 94.66 | 3.3 | Never-heated |
| 7.41 | 2.1 x 10-1 | Heat-treated |
| 15.03 | 3.8 x 10-1 | Heat-treated |
| 28.11 | 7.3 x 10-1 | Heat-treated |
| 41.59 | 1.04 | Heat-treated |
| 54.68 | 1.32 | Heat-treated |
| 68.56 | 1.58 | Heat-treated |
| 82.26 | 1.82 | Heat-treated |
| 94.77 | 2.03 | Heat-treated |
Table 2. Sorption isotherms of CO2 in suspension PVC (Digisorb data). (The original data were represented graphically)
| T (K) | P1 (kPa) | C1 (g/kg) | Comment |
|---|---|---|---|
| 298.0 | 10.79 | 4.8 x 10-1 | Never-heated |
| 298.0 | 15.7 | 6.9 x 10-1 | Never-heated |
| 298.0 | 22.57 | 9.8 x 10-1 | Never-heated |
| 298.0 | 40.64 | 1.63 | Never-heated |
| 298.0 | 49.28 | 1.91 | Never-heated |
| 298.0 | 59.29 | 2.25 | Never-heated |
| 298.0 | 66.76 | 2.49 | Never-heated |
| 298.0 | 73.82 | 2.82 | Never-heated |
| 298.0 | 79.32 | 2.95 | Never-heated |
| 298.0 | 84.24 | 3.07 | Never-heated |
| 298.0 | 88.17 | 3.16 | Never-heated |
| 298.0 | 90.33 | 3.21 | Never-heated |
| 298.0 | 92.88 | 3.29 | Never-heated |
| 298.0 | 95.04 | 3.35 | Never-heated |
| 298.0 | 96.81 | 3.36 | Never-heated |
| 298.0 | 98.39 | 3.37 | Never-heated |
| 298.0 | 100.75 | 3.38 | Never-heated |
| 298.0 | 10.61 | 3.3 x 10-1 | Heat-treated |
| 298.0 | 15.32 | 4.6 x 10-1 | Heat-treated |
| 298.0 | 22.39 | 6.7 x 10-1 | Heat-treated |
| 298.0 | 40.08 | 1.14 | Heat-treated |
| 298.0 | 48.72 | 1.36 | Heat-treated |
| 298.0 | 58.94 | 1.59 | Heat-treated |
| 298.0 | 66.6 | 1.8 | Heat-treated |
| 298.0 | 73.48 | 1.96 | Heat-treated |
| 298.0 | 79.57 | 2.08 | Heat-treated |
| 298.0 | 83.7 | 2.19 | Heat-treated |
| 298.0 | 88.22 | 2.31 | Heat-treated |
| 298.0 | 90.18 | 2.37 | Heat-treated |
| 298.0 | 92.15 | 2.42 | Heat-treated |
| 298.0 | 94.11 | 2.46 | Heat-treated |
| 298.0 | 96.67 | 5.51 | Heat-treated |
| 298.0 | 98.44 | 2.54 | Heat-treated |
| 298.0 | 100.4 | 2.57 | Heat-treated |
| 298.0 | 11.32 | 1 x 10-2 | Never-heated |
| 298.0 | 15.02 | 2 x 10-2 | Never-heated |
| 298.0 | 22.02 | 2 x 10-2 | Never-heated |
| 298.0 | 40.14 | 4 x 10-2 | Never-heated |
| 298.0 | 47.96 | 4 x 10-2 | Never-heated |
| 298.0 | 58.26 | 5 x 10-2 | Never-heated |
| 298.0 | 66.08 | 6 x 10-2 | Never-heated |
| 298.0 | 72.88 | 6 x 10-2 | Never-heated |
| 298.0 | 78.44 | 6 x 10-2 | Never-heated |
| 298.0 | 82.76 | 7 x 10-2 | Never-heated |
| 298.0 | 86.88 | 7 x 10-2 | Never-heated |
| 298.0 | 89.35 | 7 x 10-2 | Never-heated |
| 298.0 | 91.63 | 7 x 10-2 | Never-heated |
| 298.0 | 94.72 | 7 x 10-2 | Never-heated |
| 298.0 | 96.57 | 7 x 10-2 | Never-heated |
| 298.0 | 98.84 | 7 x 10-2 | Never-heated |
| 298.0 | 93.47 | 7 x 10-2 | Never-heated |
| 298.0 | 97.81 | 7 x 10-2 | Never-heated |
| 298.0 | 99.66 | 8 x 10-2 | Never-heated |
| 298.0 | 11.13 | 1 x 10-2 | Heat-treated |
| 298.0 | 15.04 | 1 x 10-2 | Heat-treated |
| 298.0 | 21.63 | 1 x 10-2 | Heat-treated |
| 298.0 | 40.17 | 2 x 10-2 | Heat-treated |
| 298.0 | 48.0 | 3 x 10-2 | Heat-treated |
| 298.0 | 58.31 | 3 x 10-2 | Heat-treated |
| 298.0 | 65.74 | 3 x 10-2 | Heat-treated |
| 298.0 | 72.95 | 3 x 10-2 | Heat-treated |
| 298.0 | 78.73 | 3 x 10-2 | Heat-treated |
| 298.0 | 83.05 | 3 x 10-2 | Heat-treated |
| 298.0 | 86.97 | 4 x 10-2 | Heat-treated |
| 298.0 | 88.82 | 4 x 10-2 | Heat-treated |
| 298.0 | 91.51 | 4 x 10-2 | Heat-treated |
| 298.0 | 93.77 | 4 x 10-2 | Heat-treated |
| 298.0 | 96.66 | 4 x 10-2 | Heat-treated |
| 298.0 | 97.9 | 4 x 10-2 | Heat-treated |
| 298.0 | 98.72 | 4 x 10-2 | Heat-treated |
| 298.0 | 99.96 | 4 x 10-2 | Heat-treated |
Table 3. Concentration isotherms of n-butane in emulsion PVC at 303 K; gravimetric data, sorption times > 18 h (the original data were represented graphically)
| T (K) | Prel | C1 (g/kg) | Comment |
|---|---|---|---|
| 298.0 | 1 x 10-2 | 9.1 x 10-1 | Never-heated |
| 298.0 | 2 x 10-2 | 1.49 | Never-heated |
| 298.0 | 4 x 10-2 | 2.47 | Never-heated |
| 298.0 | 1.0 x 10-1 | 5.96 | Never-heated |
| 298.0 | 1 x 10-2 | 3.6 x 10-1 | Heat-treated |
| 298.0 | 4 x 10-2 | 1.08 | Heat-treated |
| 298.0 | 1.0 x 10-1 | 2.27 | Heat-treated |
