Water-in-oil-in-water double nanoemulsion induced by CO2

文献情報

出版日 2010-10-29

DOI 10.1039/C0CP00869A

インパクトファクター 3.676

著者

Yueju Zhao, Jianling Zhang, Qian Wang, Jianshen Li, Buxing Han

原文を見る

要旨

The cetyltrimethylammonium bromide (CTAB)/water/heptane emulsion system with different CO2 pressure has been studied. The phase behavior investigation shows the nanoemulsion can be formed at suitable pressure range. The generalized indirect Fourier transformation (GIFT) analysis of the small-angle X-ray scattering (SAXS) data has drawn a clear picture of the structural information of the nanoemulsion, which reveals that the droplet of emulsion has a double structure with both the outer and inner droplet size in nanometre range. Furthermore, the investigation of the heptane/CTAB/water/CO2 emulsion system by using electrical conductivity confirms the emulsion type transforms from O/W to W/O/W. In addition, the effect of different CTAB concentration on the nanoemulsion formation has been studied. It is found that enough CTAB concentration is necessary for the inclusion of continuous water into oil droplets. We also explored the application of the W/O/W double nanoemulsion in material synthesis. Interestingly, the hollow silica spheres with double shells were obtained in this CO2-induced double nanoemulsion.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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