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Issue 48, 2007
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The effect of double-chain surfactants on armored bubbles: a surfactant-controlled route to colloidosomes

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Abstract

We find that the gas phases of air bubbles covered with anionic or cationic polystyrene latex particles dissolve on exposure to cationic and catanionic surfactants. The particles on the bubble interface are released as singlets or aggregates when the surfactant has a single hydrophobic chain, while porous colloidal capsules (colloidosomes) with the same aqueous phase inside as out are obtained when the surfactant has two hydrophobic chains. The formation of colloidosomes from the particle-covered bubbles does not appear to depend significantly on the charge of the particles, which makes it unlikely that bilayers of surfactant are stabilizing the colloidosome. While the exact mechanism of formation remains an open question, our method is a simple one-step process for obtaining colloidosomes from particle-covered bubbles.

Graphical abstract: The effect of double-chain surfactants on armored bubbles: a surfactant-controlled route to colloidosomes

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Publication details

The article was received on 08 Aug 2007, accepted on 24 Oct 2007 and first published on 15 Nov 2007


Article type: Paper
DOI: 10.1039/B712172E
Citation: Phys. Chem. Chem. Phys., 2007,9, 6476-6481
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    The effect of double-chain surfactants on armored bubbles: a surfactant-controlled route to colloidosomes

    A. B. Subramaniam, D. Gregory, J. Petkov and H. A. Stone, Phys. Chem. Chem. Phys., 2007, 9, 6476
    DOI: 10.1039/B712172E

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