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8564839 
Book/Book Chapter 
POLYMER SOLUTION-SUPERCRITICAL FLUID PHASE BEHAVIOR 
Mcclellan, AK; Bauman, EG; Mchugh, MA 
1985 
Elsevier (Process Technol Proc v 3) 
Amsterdam, Neth 
Supercrit Fluid Technol 
161-178 
English 
Experimental pressure-temperature (P-T) data are presented for the polystyrene-toluene-carbon dioxide system and the polystyrene-toluene-ethane system. The P-T phase diagrams for these systems exhibit characteristics which are similar to the phase diagrams of simple binary solutions. The addition of supercritical carbon dioxide and supercritical ethane to the polystyrene-toluene solution shifts the lower critical solution temperature curve to lower temperatures. Polymer-oganic solvent-supercritical fluid additive phase behavior is interpreted in terms of Patterson's corresponding states model. Representative calculations using this model are shown for the poly(ethylene-co-propylene)-hexane-supercritical ethane system.