Calculation of thermodynamic properties of polymer solutions by path integral method

Baofu Qiao*, Delu Zhao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


It is proposed that the overall free energy of a polymer solution has three fundamentally different types of contributions, i.e. the translational, the configurational and the thermal correction parts. The second and the third parts have the additive properties for segments and can be calculated by path integral method with the introduction of a new concept of effective concentration. Taking the volume fraction as the effective concentration, one obtains the Li-Zhao theory of polymer solutions reported previously. The results calculated by the present theory match the spinodals data of PS/cyclohexane systems with different molecular weights much better than those based on the Flory-Huggins theory.

Original languageEnglish (US)
Pages (from-to)153-159
Number of pages7
JournalActa Polymerica Sinica
Issue number2
StatePublished - Apr 1 2004


  • Effective concentration
  • Path integral method
  • Phase separation
  • Polymer solution

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Polymers and Plastics


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