# Wertheim's first order thermodynamic perturbation theory (TPT1)

Wertheim's first order thermodynamic perturbation theory (TPT1) ^{[1]}
^{[2]}
^{[3]}
^{[4]}
^{[5]}
can be expressed as:

where is the equation of state of the monomer system and *m* is the number of monomers in the chains.

For example, in the study of the flexible hard sphere chain model one can use the Carnahan-Starling equation of state for , leading to

## See also[edit]

## References[edit]

- ↑ M. S. Wertheim "Fluids with highly directional attractive forces. I. Statistical thermodynamics" Journal of Statistical Physics
**35**pp. 19-34 (1984) - ↑ M. S. Wertheim "Fluids with highly directional attractive forces. II. Thermodynamic perturbation theory and integral equations" Journal of Statistical Physics
**35**pp. 35-47 (1984) - ↑ M. S. Wertheim "Fluids with highly directional attractive forces. III. Multiple attraction sites" Journal of Statistical Physics
**42**pp. 459-476 (1986) - ↑ M. S. Wertheim "Fluids with highly directional attractive forces. IV. Equilibrium polymerization" Journal of Statistical Physics
**42**pp. 477-492 (1986) - ↑ M. S. Wertheim "Thermodynamic perturbation theory of polymerization", Journal of Chemical Physics
**87**pp. 7323-7331 (1987)

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