Membrane osmometer for use at moderate applied pressures

Corey L. Moses, Luis P. N. Rebelo, W. Alexander Van Hook

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A membrane osmometer designed for use at pressures greater than 0.1 MPa and less than 6 MPa was employed to determine the pressure coefficient of the equilibrium osmotic pressure (∂π/∂P) of a dilute polystyrene/toluene solution. The pressure coefficient of the second virial coefficient (∂A2/∂P), calculated from ∂π/∂P, was 6 (±4) × 10-5 cm3 mol g-2 MPa-1, which was in reasonable agreement with the value obtained from pressure-dependent light scattering.

Original languageEnglish
Pages (from-to)3064-3069
Number of pages6
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number23
Publication statusPublished - 1 Dec 2003


  • Osometry
  • Pressure dependence
  • Second virial coefficient


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