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Issue 35, 2019
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Surfactant mediated particle aggregation in nonpolar solvents

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Abstract

The aggregation behavior of particles in nonpolar media is studied with time-resolved light scattering. At low surfactant concentrations particles are weakly charged and suspensions are not stable. The suspensions become progressively more stable with increasing surfactant concentration as particles become more highly charged. At high concentrations the particles become neutralized and aggregation is again fast. The theory of Derjaguin, Landau, Verwey, and Overbeek (DLVO) is able to predict the stability ratios quantitatively by using the experimentally measured surface charges, screening lengths and van der Waals forces.

Graphical abstract: Surfactant mediated particle aggregation in nonpolar solvents

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Publication details

The article was received on 09 Apr 2019, accepted on 06 Aug 2019 and first published on 08 Aug 2019


Article type: Paper
DOI: 10.1039/C9CP01985E
Phys. Chem. Chem. Phys., 2019,21, 18866-18876
  • Open access: Creative Commons BY license
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    Surfactant mediated particle aggregation in nonpolar solvents

    M. Farrokhbin, B. Stojimirović, M. Galli, M. Khajeh Aminian, Y. Hallez and G. Trefalt, Phys. Chem. Chem. Phys., 2019, 21, 18866
    DOI: 10.1039/C9CP01985E

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