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Issue 3, 2012
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Wettability of silica nanoparticlesurfactant nanocomposite interfacial layers

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Abstract

The hydrophobicity of a particle surface can be tuned by the addition of surfactants that change the surface free energy for their attachment to a liquid interface. In this work, we report an experimental study where the wettability properties of silica nanoparticles are modified by the adsorption of alkyltrimethylammonium surfactants (CnTAB, n = 12, 16) on the surface of the particles. We have pointed out that the wettability of the complexes is controlled by an intricate balance of electrostatic and hydrophobic interactions between the particle surface and the surfactant. These interactions play an important role in the structure of the surfactant–particle nanocomposite interfacial layer.

Graphical abstract: Wettability of silica nanoparticle–surfactant nanocomposite interfacial layers

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Publication details

The article was received on 25 Jul 2011, accepted on 11 Oct 2011 and first published on 10 Nov 2011


Article type: Paper
DOI: 10.1039/C1SM06421E
Citation: Soft Matter, 2012,8, 837-843
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    Wettability of silica nanoparticlesurfactant nanocomposite interfacial layers

    A. Maestro, E. Guzmán, E. Santini, F. Ravera, L. Liggieri, F. Ortega and R. G. Rubio, Soft Matter, 2012, 8, 837
    DOI: 10.1039/C1SM06421E

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