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Issue 1, 2009
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Reversible light-induced critical separation

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A reversible, critical phase separation induced by UV light at 350 nm has been achieved by doping a small amount of photosensitive surfactant into an AOT-stabilised water-in-decane microemulsion. The initial and separated phases were analysed by small-angle neutron scattering (SANS), which suggests irradiation produces two coexisting water-in-oil microemulsions with relative droplet concentrations of 1 : 3. To better understand the effect of the photosurfactant, drop shape analysis tensiometry was used, showing a change in the effectiveness of the interfacial film under different irradiation conditions.

Graphical abstract: Reversible light-induced critical separation

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The article was received on 31 Jul 2008, accepted on 26 Sep 2008 and first published on 08 Oct 2008

Article type: Communication
DOI: 10.1039/B813234H
Citation: Soft Matter, 2009,5, 78-80
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    Reversible light-induced critical separation

    R. F. Tabor, R. J. Oakley, J. Eastoe, C. F. J. Faul, I. Grillo and R. K. Heenan, Soft Matter, 2009, 5, 78
    DOI: 10.1039/B813234H

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