IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Propane with Polystyrene (PS)

Components:
   (1) Polystyrene (PS); ; [9003-53-6]  NIST Chemistry WebBook for detail
   (2) Propane; C3Hg; [9003-42-3]  NIST Chemistry WebBook for detail

Original Measurements:
   M.E. Stewart, H.B. Hopfenberg, W.J. Koros and N.R. McCoy, J. Appl. Polym. Sci. 34, 721-735 (1987).

Variables:
   Temperature = 303 K
   Pressure = 6.1-93.1 kPa

Prepared By:
   Yu. P. Yampol'skii

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

Solubility C (g per 100 g polymer) of propane in PS*
Pressure [mm Hg]	Concentration C₁	Remark(s)
46	0.20	PS as received
149	0.38
357	0.56
558	0.79
700	1.05
46	0.30	PS preswollen in C3H8 (700 mm Hg, 30 min)
144	0.56
448	0.85

Notes:
   ^*  Taken from the graph by compiler.

Method/Apparatus/Procedure:
   Gas sorption measurements were performed using a Cahn RG microbalance. The sorption apparatus and procedure are discussed in ref. (1)

Source and Purity of Materials:
   Emulsion polymerized PS (B.F.Goodrich Co R/D center) had M_n = 440 000 and glass transition temperature 381 K.
Instrument grade propane was 99.99 % pure.

Estimated Errors:

References:
   ¹ Fechter, J.M.H.; Hopfenberger, H.B.; Koros, W.J. Polym. Eng. Sci. 1981, 21, 925.