M. Keskin et M. Gencaslan, INVESTIGATION OF THE PHASE-BEHAVIOR IN A COMPRESSIBLE POLYMER-SOLVENTSYSTEM USING THE FULL TOMPA MODEL, The Journal of chemical physics, 108(14), 1998, pp. 6042-6048
Critical lines and the phase behavior of a compressible polymer-solven
t system are investigated using of the full Tompa model for varying nu
mbers of segments in each polymer chain. Critical lines are displayed
in the density-density and the combined P,T and T,x planes for the ''r
ight corner'' and also ''left corner'' cases. The crossing point, in a
point at which two critical lines meet and exchange branches, is also
calculated analytically. The P,T diagrams are discussed using the Sco
tt and van Konynenburg phase diagram classifications. It is found that
the right corner case corresponds to the transition from type II to t
ype III classifications. On the other hand, the left corner case does
not correspond to any of the six main phase diagram classes. (C) 1998
American Institute of Physics.