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High Internal Phase Emulsions Stabilized Solely by Functionalized Silica Particles

✍ Scribed by Vivian O. Ikem; Angelika Menner; Alexander Bismarck


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
187 KB
Volume
48
Category
Article
ISSN
0044-8249

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✦ Synopsis


We would like to correct the following statement "All previous reports on particle-stabilized emulsions deal with emulsions that have internal phase levels below 70 vol %." made in the introduction of our recent article. Since the publication of our communication, three papers [1][2][3] describing Pickering w/o and o/w emulsions with different internal phase levels and stabilities, which were not referenced in our paper, have been brought to our attention. Arditty et al. [2] describe silicone oil-in-water Pickering emulsions with up to 90 wt % internal phase and water-in-silicone oil Pickering emulsions having internal phase levels of up to 75 wt % stabilized using as received hydrophilic silica particles and silanized hydrophobic silica particles, respectively. Therefore, we should have stated "Reports on particle stabilized w/o emulsions deal with emulsions having internal phase levels of up to 75 vol %. However, Arditty et al. reported on the preparation of o/w Pickering-HIPEs with up to 90 % internal phase by manual shaking." Furthermore, we also stated in our communication that "Binks and Lumsdon [11] further stated that particle-stabilized emulsions phase invert between volume fractions of 0.65 and 0.7, which means the major phase becomes the continuous phase." This statement is correct for the water-in-oil Pickering emulsions described in Ref.

[4], however, Binks and Lumsdon [1] also provide examples of phase inversion occurring at different oil/water ratios starting from as low as 0.4. We would like to apologize to the authors of papers [1-3] for not acknowledging their research.


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