
is also called the heat of mixing [Sperling-74]
is the
Enthalpy of Mixing
is a count of the number of polymer molecules in the solution
[Sperling-72]
is the volume fraction of solvent [Sperling-74]
is sometimes called "the lattice constant of entropic
origin" [Sperling-75]
is the molar volume of the solvent [Sperling-75]
and
are
solubility parameters
the "Flory-Huggins Interaction
Parameter" and states that it is:
is treated as if it were a
constant by some equations, but it has been shown to change
with polymer concentration (usually an increase.)