Phase separation in polystyrene-poly(vinyl methyl ether) blends dilated with compressed carbon dioxide

Macromolecules

Volumn 33, Issue 14, 2000, Pages 5143-5152

  RamachandraRao, Vijayakumar S ^a   Watkins, James J ^a  

^a University of Massachusetts   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CARBON DIOXIDE; COMPOSITION; ENTHALPY; EQUATIONS OF STATE; FLUORESCENCE; HIGH PRESSURE EFFECTS; PHASE SEPARATION; PHASE TRANSITIONS; SORPTION; SPECTROSCOPY; STABILITY; TEMPERATURE;

DILATION; FREE VOLUMES; IN-SITU HIGH PRESSURE FLUORESCENCE SPECTROSCOPY; POLYVINYL METHYL ETHER; SANCHEZ-LACOMBE EQUATION OF STATE;

POLYMER BLENDS;

EID: 0034229555     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma000066e     Document Type: Article

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47. 2 solubility approaches zero). We point out, however, that use of a positive δij renders the energetic contribution negative, but its slope, which is determined by the characteristic parameters of the mixture components, is considerably more shallow than that of the free volume term, Thus, the free volume contribution is the dominant contributor to instability for any value of δij.