IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Carbon dioxide with Polyimide Ultem
Components:
   (1) Polyimide Ultem; ; [61128-24-3]  NIST Chemistry WebBook for detail
   (2) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
Original Measurements:
   K.I. Okamoto, K. Tanaka, O. Yokoshi, K. Hidetoshi and A. Nakamura, Intern. Congress on Membranes (ICOM-87), 9-15, Tokyo (1987).

 Variables:
   Temperature = 353 K
   Pressure = 0-3.0 MPa

 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]
0.5276.1 0.286
 Method/Apparatus/Procedure:
   Equilibrium sorption was measured by the pressure decay method using a dual-volume sorption cell.

 Source and Purity of Materials:
   Commercial sample of Ultem-1000 (General Electric Co) had a density 1.289 g/cm3, glass transition temperature 488 K, and had an amorphous structure.

 Estimated Errors: