Suspensions with nano and submicron particles are
considered of great potential for various fields like
pharmaceutical applications, coatings, nanocomposites
materials, cosmetic…Their dispersibility, which corresponds
to their property of being well distributed in term of size and
concentration at a given time after a dispersion process, is of
great interest as it influences final end use properties like
homogeneity, stability, polishing… Because of size, surface
area, concentration, zeta potential, affinity with solvent,
particles may aggregate, agglomerate and sediment.
Dispersibility is a multiparametric property which has to be
measured on the native sample without sample preparation.
Also common size measurement techniques may alter the
dispersed phase or the apparent particle size due to the
principle of measurement or the sample dilution.
In this note, we propose a method to assess the dispersibility
ratio for two typical applications: titanium dioxide and talc
