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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Polycarbonate (PC)
Components:
(1) Polycarbonate (PC); ; [24936-68-3]
NIST Chemistry WebBook
for detail
(2) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
Evaluator:
Yu. P. Yampol-skii, A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, April, 1994
Critical Evaluation:
Bisphenol A polycarbonate (for brevity here and further,
polycarbonate
) is well known and widely used industrial plastic produced by General Electric Co. under a tradename Lexan. Many authors dealt with the system PC—carbon dioxide.
1-11
The polymer samples studied were nearly identical in majority of the cases. The data have been obtained in the temperature range 293—373 K and at pressures up to 10 MPa. It was the system PC—CO
2
, which was used as an example for the demonstration of the effects of annealing and conditioning on the sorption parameters,
4,9,11
which are generally characteristic of other glassy polymers. Exposing a polymer sample to high pressure gas, results in an increase in the concentration of dissolved gas the larger the higher is the pressure of such conditioning.
4
The annealing of polymer samples at sub-
T
g
temperatures leads to a decrease in the concentration of the dissolved gas.
The table shows the pressure dependence of the concentration,
C
, of carbon dioxide dissolved in the polymer samples unconditioned (“as received”) and exposed to 2 MPa of carbon dioxide prior to solubility measurement. It is seen that the difference between the individual “sorption isotherms” is not dramatic. The last line presents average values of
C
at different pressures.
Experimental Data:
(Notes on the Nomenclature)
Pressure dependence of the concentration
C
/(cm
3
(STP) cm
-3
) of dissolved CO
2
at 308 K
Pressure [MPa]
Concentration C
1
Reference
Remark(s)
0.5
12.2
2
** (type of sample)
0.5
12.8
4
*
0.5
13.2
5
**
0.5
—
6
**
0.5
11.7
8
**
0.5
—
10
**
0.5
13.2
11
*
0.5
12.6
Av.
—
1.0
16.6
2
**
1.0
18.5
4
*
1.0
19.0
5
**
1.0
17
6
**
1.0
18.6
8
**
1.0
16
10
**
1.0
19.3
11
*
1.0
17.9
Av.
—
1.5
20.6
2
**
1.5
23.0
4
*
1.5
23.6
5
**
1.5
—
6
**
1.5
24.0
8
**
1.5
—
10
**
1.5
24.0
11
*
1.5
23.0
Av.
—
2.0
24.5
2
**
2.0
27.2
4
*
2.0
27.6
5
**
2.0
27
6
**
2.0
28.7
8
**
2.0
26
10
**
2.0
28.1
11
*
2.0
27.0
Av.
—
Notes:
*
Conditioned at 2.0 Mpa of CO
2
.
**
"As received"
References: (Click a link to see its experimental data associated with the reference)
1
F.J. Norton, J. Appl. Polym. Sci. 7, 1649-1659 (1963).
2
W.R. Vieth and J.A. Eilenberg, J. Appl. Sci. 16, 945 (1972).
3
W.J. Koros, D.R. Paul and A.J. Rocha, J. Polym. Sci., Polym. Phys. Ed. 14, 687-694 (1976).
4
A.J. Wonders and D.R. Paul, J. Membr. Sci. 5, 63 (1979).
5
A.H. Chan and D.R. Paul, Polym. Eng. Sci. 20, 87 (1980).
6
G.K. Fleming and W.J. Koros, Macromolecules 19, 2285 (1986).
7
Y. Kamiya, T. Hirose, K. Mizoguchi and K. Terada, J. Polym. Sci., Part B: Polym. Phys. 24, 1525 (1986).
8
E. Sada, H. Kumazawa, H. Yakushji, Y. Bamba and K. Sakata, Ind. Eng. Chem., Res. 26, 433-438 (1987).
9 N. Muruganandam, W.J. Koros and D.R. Paul, J. Polym. Sci. Part B: Polym. Phys. 25, 1999 (1987).
10
R.G. Wissinger and M.E. Paulaitis, J. Polym. Sci., Part B: Polym. Phys. 25, 2497-2510 (1987).
11
G.K. Fleming and W.J. Koros, Macromolecules 23, 1353 (1990).