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Communication Dans Un Congrès Année : 2023

Colloidal particles adsorption fluctuations: experimental and kirk- wood buff integrals approaches

Résumé

Colloidal particles (amidine latex, 1 μm in diameter) in aqueous solution are put in contact with a glass slide under ambient conditions where they adsorb. The particle concentration is fixed during the experiment by mean of an infinite reservoir. Using a simple optical microscope, 240 x 320 μm2 images of the population of the adsorbed particles are taken while the glass slide and the solution are at equilibrium. Analyzing the surface population we get the direct access to the isotherm, i.e. sur- face concentration as a function of solution concentration. The isotherm is alternatively obtained both from the density fluctuation and/or from the pair distribution function and the use of the Kirk- wood Buff Integral. The results clearly show the equality of the chemical potential between the two phases.

Domaines

Chimie
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Dates et versions

hal-04526926 , version 1 (29-03-2024)

Identifiants

  • HAL Id : hal-04526926 , version 1

Citer

Jean-Marc Simon, Isabelle Pochard. Colloidal particles adsorption fluctuations: experimental and kirk- wood buff integrals approaches. InterPore2023, May 2023, Edimbourg / Edinburgh, United Kingdom. pp.MS23 / 1008. ⟨hal-04526926⟩
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