title: Estimation of the particle-wall interaction energy in sedimentation field flow fractionation.
abstract: A new sedimentation field flow fractionation (SdFFF) method is presented for the estimation of the total potential energy of interaction between colloidal particles and the channel wall. The method is based on the variation of the mean cloud thickness in SdFFF due to the variation of the suspension's ionic strength. It requires only two SdFFF experiments at two different ionic strengths and at a constant acceleration field. The found values are compatible with those calculated from the various forms of equations of the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory.
authors.affiliation: Department of Chemistry, University of Patras, Panepistimioupoli Rion, GR-26504 Patras, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Lioris
authors.forename: Lambros
authors.initials: L
authors.lastname: Farmakis
authors.forename: Athanasia
authors.initials: A
authors.lastname: Koliadima
authors.forename: George
authors.initials: G
authors.lastname: Karaiskakis
mesh_terms: D031521:Fractionation, Field Flow / Q000379:methods*; D009994:Osmolar Concentration