MULTICOMPONENT FORMS OF POLYMER-SOLUTION THEORIES Academic Article uri icon

abstract

  • Equation-of-state polymer solution theories provide a rational means of describing polymer solution vapor/liquid equilibrium and liquid/liquid equilibrium for multicomponent systems. These theories require a relatively small number of parameters to describe solution behavior but are quite complex and cumbersome for manipulation and calculation. This work presents an efficient mathematical framework for manipulating these equations for the purpose of deriving solution thermodynamic properties such as species activities or chemical potentials. Writing the equations in matrix form and obtaining an expression for the excess free energy provide a route to species activities which is relatively clean and compact. The resulting multicomponent equation for species activities for the Flory equation of state theory, the simplified Flory theory, and the Sanchez and Lacombe lattice fluid theory can all be obtained in a similar way and have similar forms. The compact form allows easy comparison of different theories and also provides a convenient form for coding computer calculations of solution behavior. 1988, American Chemical Society. All rights reserved.

published proceedings

  • MACROMOLECULES

author list (cited authors)

  • GLOVER, C. J., & RUFF, W. A.

citation count

  • 0

complete list of authors

  • GLOVER, CJ||RUFF, WA

publication date

  • October 1988