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Surfactant mediated particle aggregation in nonpolar solvents

Farrokhbin, Mojtaba and Stojimirović, Biljana and Galli, Marco and Aminian, Mohsen Khajeh and Hallez, Yannick and Trefalt, Gregor Surfactant mediated particle aggregation in nonpolar solvents. (2019) Physical Chemistry Chemical Physics, 35. 18866-18876. ISSN 1463-9076

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Official URL: https://doi.org/10.1039/C9CP01985E

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.

Item Type:Article
HAL Id:hal-02354135
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Yazd Shahid Sadoughi University of Medical Sciences - SSU (IRAN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Genève (SWITZERLAND)
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Deposited On:07 Nov 2019 14:52

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