| ΔSM | change in entropy that occurs from the mixing process |
| k | Boltzmann constant |
| N1 | number of solvent molecules |
| N2 | number of polymer segments |
| v1 | volume fraction of solvent molecules |
| v2 | volume fraction of polymer segments |
The above equation uses the convention, 1=solvent; 2=polymer.
The above above equation can be derived from the equation carved on Boltzmann's tomb. The derivation.
See also: