Gibbs Free Energy Change of Mixing

[Sperling-74]
Sperling's nomenclature used for this equation
Multiple definitions given
Comparison of Sperlings and Hiementz' nomenclature
Definitions of the variables in the equation
  • Here we are using Sperling's solution thermodynamic nomenclature

  • Multiple definitions for Delta Gm are given

    [Sperling-72] gives three other equations for which are NOT equivalent to the equation on [Sperling-74] because they do not deal with the     Flory-Huggins Interaction parameter, .

  • Hiementz and Sperling use different notation for solution thermodynamics equations:
    1. {Hiementz, ,} corresponds to {Sperling, , }

    2. {Hiementz, , } corresponds to {Sperling, , }

      However, they are both consisting in the use of the subscripts, 1=solvent; 2=polymer.

     Definitions of the variables

  • is the Boltzmann constant and is temperature.

  • counts the number of solvent molecules and counts the number of polymer molecules.

  • is the volume fraction of the solvent and is the volume fraction of polymer.
  • is the Flory Huggins interaction parameter.



    Last Update- July 1, 1995- wld