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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Polysulfone (PSF)
Components:
(1) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(2) Polysulfone (PSF); ; [25135-51-7]
NIST Chemistry WebBook
for detail
Original Measurements:
E. Sada, H. Kumazawa and P. Xu, J. Polym. Sci., Part B: Polym. Phys. 27, 919-927 (1989).
Variables:
Temperature = 313 K
Pressure = 0-1.8 MPa (0-18 atm)
Prepared By:
A.K. Bokarev
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
Solubility of carbon dioxide
C
/cm
3
(STP)/cm
3
in PSF membranes at 313 K*
Pressure [atm]
Langmuir's parameter, C
H
Remark(s)
2
3.0
As cast
4
5.7
As cast
6
7.9
As cast
8
10.2
As cast
10
12.1
As cast
12
14.0
As cast
14
15.9
As cast
16
17.7
As cast
18
19.5
As cast
20
21.2
As cast
2
5.6
Commercial
4
9.5
Commercial
6
12.4
Commercial
8
14.9
Commercial
10
16.8
Commercial
12
18.9
Commercial
14
20.5
Commercial
16
22.5
Commercial
18
23.6
Commercial
20
25.2
Commercial
Dual mode sorption parameters for CO
2
in PSF films at 313 K
Chemical Name
Henry's law constant, K [cm3(STP) cm-3 atm -1]
Langmuir's parameter, C
H
[cm
3
(STP) cm
-3
]
Affinity Coefficient b [atm
-1
]
Cast PSF
0.813
6.61
0.155
Commerical PSF (Toraysion-PS)
0.547
18.3
0.168
Notes:
*
Smooth values taken from the graph by compiler.
Method/Apparatus/Procedure:
The apparatus and procedure for measuring sorption isotherms were described in ref. (1).
Source and Purity of Materials:
The commercial polysulfone samples Torayslon-PS (Toray Co. Ltd.) and P-1700 (Union Carbide) were used. P-1700 had the glass transition temperature 459 K. A dense PSF (P-1700) membrane was prepared by casting a mixed solution of 25.5 % PSF, 55.5 % N,N-dimethylacetamide, and 19.0% acetone by weight. Purity of CO
2
not specified.
Estimated Errors:
References:
1
Sada, E.; Kumazawa, H.; Yoshio, Y. J. Polym. Sci., Polym. Phys. Ed., 1989, 26, 1035.