Free Energy Change of Mixing

Here we are using Hiementz' solution thermodynamics nomenclature

• Hiementz and Sperling use different notation for solution thermodynamics equations:
  
  1. {Hiementz, ,} corresponds to {Sperling, , }
     
     
  2. {Hiementz, , } corresponds to {Sperling, , }
     
     
  
  
  
• The subscript 1 (, ) refers to solvent and the subscript 2 (, ) refers to polymer [Sperling-74]; I've seen this nomenclature repeatedly in both Sperling and Hiementz. Repeat: 1=solvent; 2=polymer.
  
  
• is the Real Gas Constant
  
  
• is the Temperature
  
  
• [Hiementz-517] calls and "volume fractions of components", which you can compare to what Sperling said