2009
DOI: 10.1021/la903817b
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Pickering Emulsions Stabilized by a Lipophilic Surfactant and Hydrophilic Platelike Particles

Abstract: Liquid paraffin-water emulsions were prepared by homogenizing oil phases containing sorbitan oleate (Span 80) and aqueous phases containing layered double hydroxide (LDH) particles or Laponite particles. While water-in-oil (w/o) emulsions are obtained by combining LDH with Span 80, the emulsions stabilized by Laponite-Span 80 are always o/w types regardless of the Span 80 concentration. Laser-induced fluorescent confocal micrographs indicate that particles are absorbed on the emulsion surfaces, suggesting all … Show more

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Cited by 80 publications
(57 citation statements)
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References 32 publications
(59 reference statements)
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“…42, 43,44 Dodecanethiol-coated gold nanocrystals disperse in pure squalene, but squalene-nanocrystal mixtures did not emulsify in water without lipid. The positioning of the hydrophobic Au nanocrystals at the squalene-lipid interface increases the separation between the water and squalene phases, and also reduces the contact between lipid molecules and squalene, which do not mix according to recent studies.…”
Section: Resultsmentioning
confidence: 99%
“…42, 43,44 Dodecanethiol-coated gold nanocrystals disperse in pure squalene, but squalene-nanocrystal mixtures did not emulsify in water without lipid. The positioning of the hydrophobic Au nanocrystals at the squalene-lipid interface increases the separation between the water and squalene phases, and also reduces the contact between lipid molecules and squalene, which do not mix according to recent studies.…”
Section: Resultsmentioning
confidence: 99%
“…Ultimately, these materials are more useful for encapsulation and delivery of anionic drug molecules, opposite to that demonstrated for montmorillonite. Likewise to montmorillonite, LDH particles are also capable of stabilizing Pickering emulsions and, thus, may also be used to solidify LBDDS in a similar manner to SLH microparticles (95)(96)(97). Of interest, Rahman et al utilized LDHs as a platform for adsorbing lipase enzymes from Candida rugosa to act as a biocatalyst for synthesizing esters (98,99).…”
Section: mentioning
confidence: 99%
“…Several materials have been used to prepare Pickering emulsions [21][22][23][24][25]; among them, silica is the most popular, because its surface is easily modified, either by chemical reaction or by physical adsorption of various compounds such as salts, low molecular weight surfactants, polymers and pigments and natural polyphenols, among others [25][26][27][28][29][30][31][32]. In particular, different types of silica materials (MCM-41, SBA-16, etc.)…”
Section: Introductionmentioning
confidence: 99%