IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Carbon dioxide with Ethylene, Nitrous oxide and Poly(methyl methacrylate) (PMMA)
Components:
   (1) Poly(methyl methacrylate) (PMMA); ; [9011-14-7]  NIST Chemistry WebBook for detail
   (2) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (3) Ethylene with Nitrous oxide; C2H4, N2O; [74-85-1, 10024-97-2]  NIST Chemistry WebBook for detail
Original Measurements:
   W.J. Koros and E.S. Sanders, J. Polym. Sci. Symp. 72, 142 (1985). E.S. Sanders and W.J. Koros J. Polym. Sci., Polym. Phys. Ed. 24, 175 (1986).

 Variables:
   Temperature = 308 K
   Pressure = 308 K

 Prepared By:
   A.K. Bokarev

 Experimental Remarks:
   The following figures (Figs. 9-11) refer to mixed gas sorption of CO2/C2H4 and CO2/N2O. Points are experimental data, solid lines are predictions of DMS equation and dashed lines are prediction of equation:

      C1=kD1p1++C1H1b1p1/(1+b1p1+b2p2)

      C2=kD2p2++C1H2b2p2/(1+b1p1+b2p2).

All the parameters for gases (1) and (2) are pure components sorption parameters from Table 1.

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
   

Dual mode parameters for pure component sorption of CO2, C2H2, and N2O in PMMA
Chemical NameHenry's law constant, K [cm3(STP)/cm3 atm]Langmuir's parameter, CH [cm3(STP) cm-3]Affinity Coefficient b [atm-1]
CO20.94419.680.158
C2H40.46112.400.189
N2O1.06818.000.186
 View Figure 1 for this Evaluation

View Figure 2 for this Evaluation

View Figure 3 for this Evaluation

View Figure 4 for this Evaluation

Method/Apparatus/Procedure:
   An apparatus for precise measurement is both pure and mixed gas sorption in glassy polymers was used. Details in Ref. I.

 Source and Purity of Materials:
   CO2: Air Products; purity 99.99 % (Coleman grade).
C2H4: Airco Research Triangle Park; purity 99.5 % (2.5 grade).
N2O: Airco Research Triangle Park; purity 99.5 % (4.5 grade).
PMMA: Aldrich Chemical Co.; Mw = 600 000.

 Estimated Errors:

   Temperature: No information given.

 References:
   1E. S. Sanders, W. J. Koroa, B. Hopfenberg, as4 V. Stasnetl, J. Membr. Sd. 13, 161 (1983).
   2W. J. Koros, J. Polym. Sci. Polym. Phys. Ed. 18, 981 (1980).