Abstract
The theories of steric stabilisation and the main parameters that control stability are briefly reviewed. This followed by description of the methods that can be applied for studying steric interactions. Of these viscoelastic measurements offer an indirect, but simple method, for studying interparticle interaction. The storage modulus (G′) volume fraction (φ) results could be compared with the force-distance curves obtained from direct measurements. The effect of addition of free polymer to sterically stabilised dispersions, i.e. depletion flocculation, was investigated using rheological measurements. The latter was applied to calculate the energy of separation Esep between the particles in a flocculated structure. Esep was compared with the free energy of depletion Gdep that was calculated using Asakura and Oosawa as well as Fleer, Scheutjens and Vincent’s theories.
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Tadros, T. Steric Stabilisation and Flocculation by Polymers. Polym J 23, 683–696 (1991). https://doi.org/10.1295/polymj.23.683
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DOI: https://doi.org/10.1295/polymj.23.683
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