IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Methane and Poly(vinyl chloride) (PVC)

Components:
   (1) Carbon dioxide with Methane; CO2, CH4; [124-38-9, 74-82-8]  NIST Chemistry WebBook for detail
   (2) Poly(vinyl chloride) (PVC); ; [9002-86-2]  NIST Chemistry WebBook for detail

Original Measurements:
   J.R. Field, B.E Parker and R.L. Ballard, Japan-US Polymer Symposium, pp. 247-248 (1985).

Variables:
   Temperature = 298 K
   Pressure = 0.16-0.17 MPa

Prepared By:
   Yu. P. Yampol'skii

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

Table 1. Dual mode sorption parameters for methane and carbon dioxide in PVC at 298 K
T/K	Chemical Name	Henry's law constant, K [cm³(STP) cm^-3 cm Hg^-1]	Concentration C₁ [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
298	CH4	0.105	2.17	0.0491
298	CO2	0.184	40.3	0.0496

Table 2. Sorption isotherms of methane and carbon dioxide in PVC at 298 K (The original data wre represented graphically)
T/K	Chemical Name	Pressure [MPa]	Sorption [(V₁(STP)/V₂)]
298	CH4	0.17	0.38
298	CH4	0.34	0.53
298	CH4	0.47	0.85
298	CH4	0.55	1.11
298	CH4	0.67	1.13
298	CH4	0.78	1.42
298	CH4	0.88	1.61
298	CH4	0.98	1.67
298	CH4	1.06	1.83
298	CH4	1.16	1.95
298	CO2	0.16	3.48
298	CO2	0.27	5.28
298	CO2	0.41	7.74
298	CO2	0.54	9.71
298	CO2	0.64	10.98
298	CO2	0.77	12.72
298	CO2	0.88	13.99
298	CO2	1.00	15.27
298	CO2	1.14	16.94
298	CO2	1.27	18.01

Method/Apparatus/Procedure:
   Sorption isotherms were obtained by the pressure decay method. Ref. 1. Conditioning at 23 atm for 60 h and degassing preceded the measurements.

Source and Purity of Materials:
   PVC: Samples were compression modeled at 450 K from a mixture of low molecular mass PVC resin and 3 % of a stabilizer (Cincinnati Milacorn (TM-692)).

Estimated Errors:

   Temperature: No information given.

References:
   ¹ Koros, W.J. and Paul, D.R.; J. Polym. Sci., Polym. Phys. Ed. 14, 1903 (1976).