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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Methane and Copoly(pyromellitic dianhydride-isopropylidine dianiline) PMDA-IPDA
Components:
(1) Carbon dioxide with Methane; CO2, CH4; [124-38-9, 74-82-8]
NIST Chemistry WebBook
for detail
(2) Copoly(pyromellitic dianhydride-isopropylidine dianiline) PMDA-IPDA; ; []
NIST Chemistry WebBook
for detail
Original Measurements:
K.C. O'Brian, W.J. Koros and G.R. Husk, J. Membr. Sci. 35, 217 (1988).
Variables:
Temperature = 308 K
Pressure = 0.1-1.7 MPa
Prepared By:
Yu. P. Yampol'skii
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
Sorption isotherms of carbon dioxide and methane in PMDA-IPDA at 308 K (The original data were represented graphically)
Chemical Name
Pressure [MPa]
Sorption [(V*
1
(STP)/V*
2
)]
CO2
0.15
14.35
CO2
0.46
35.63
CO2
0.88
47.54
CO2
1.31
55.91
CO2
1.63
63.02
CH4
0.22
3.86
CH4
0.59
9.90
CH4
1.03
13.46
CH4
1.50
16.26
Method/Apparatus/Procedure:
Sorption measurements were carried out using a single transducer apparatus described in Ref. 1.
Source and Purity of Materials:
PMDA-IPDA: polymerization performed in dimethylacetamide as 288—293 K to form polyamic acid precursor according to standard procedure.
2
The polyamic acid solution was wet cast on a glass substrate heated for I h at 353 K under Ar to remove the solvent and
Estimated Errors:
Solubility: Relative precision of solubilities: ±5%.
References:
1
S. E. Sanders, Ph.D. dissertation, NC State University, 1983, 2C. E. Scroog, A. L. Endrey, S. V. Abravio, C. E. Berro, W. M. Edwards, and K. L. Olivier, J. Pol. Sci,, Part A 3, 1373 (1965).