IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Polystyrene (PS)

Components:
   (1) Polystyrene (PS); ; [9003-53-6]  NIST Chemistry WebBook for detail
   (2) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail

Original Measurements:
   R.G. Wissinger and M.E. Paulaitis, J. Polym. Sci., Part B: Polym. Phys. 25, 2497-2510 (1987).

Variables:
   Temperature = 308.2 K - 338.2 K
   Pressure = 0-7.3 MPa (0-70 atm)

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 of polystyrene at different temperatures. (The original data were represented graphically)
T/K	Pressure [MPa]	Sorption [(V₁(STP)/V₂)]
308.2	0.51	6.04
308.2	1.02	9.38
308.2	1.57	13.31
308.2	2.06	15.98
308.2	2.92	23.44
308.2	3.78	31.73
308.2	4.55	36.32
308.2	5.52	42.67
308.2	6.38	48.36
308.2	7.29	57.32
323.2	0.52	4.86
323.2	1.05	6.94
323.2	1.57	10.03
323.2	2.17	14.88
323.2	2.68	17.46
323.2	3.19	20.89
323.2	3.68	23.64
323.2	4.22	25.64
323.2	4.71	29.23
323.2	5.17	31.31
323.2	5.57	35.67
338.2	0.42	4.19
338.2	0.80	5.94
338.2	1.24	7.60
338.2	1.65	10.61
338.2	2.04	11.35
338.2	2.47	14.53
338.2	2.87	16.44
338.2	3.33	18.01
338.2	3.69	19.51
338.2	4.01	21.68
338.2	4.32	24.11

Method/Apparatus/Procedure:
   A gravimetric method was used. The polymer samples were suspended from a quartz spring. A correction for buoyancy was introduced using the densities of carbon dioxide up to high pressures.

Source and Purity of Materials:
   CO₂: Linde, purity 99.99 %.
Polystyrene: Scientific Polymer Products, M_w = 250 000, glass transition temp. 373 K.

Estimated Errors:

   Temperature: No information given.