IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Carbon dioxide with Copolyimide
Components:
   (1) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (2) Copolyimide; ; []  NIST Chemistry WebBook for detail
Original Measurements:
   K. Okamoto, K. Tanaka, O. Yokoshi, K. Hidetoshi and A. Nakamura, Intern. Congress on Membranes ICOM-87, 9-P15, p.542-543 (1987).

 Variables:
   Temperature = 353 K
   Pressure = 353 K

 Prepared By:
   Yu. P. Yampol'skii

 Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
   
Dual-mode sorption parameters for carbon dioxide
Henry's law constant, K [cm3(STP)/cm3 atm]Langmuir's parameter, CH [cm3(STP) cm-3]Affinity Coefficient b [atm-1]Remark(s)
0.58820.90.281Cast
0.57318.50.249Annealed
 Method/Apparatus/Procedure:
   Equilibrium sorption was measured by the pressure decay method using a dual-volume sorption cell.

 Source and Purity of Materials:
   The polymers films (both cast and annealed at 603 K for 5 h.) had the following characteristics: density 1.357 g/cm3, glass transition temperature 623 K. Cast and annealed films had amorphous structure.

 Estimated Errors: