Spontaneous Emulsification Produced by Chemical Reactions

Journal of Colloid and Interface Science
Taisei Nishimi, C A Miller

Abstract

Spontaneous emulsification of small oil droplets was produced in three different systems by chemical reactions which converted lipophilic surfactants initially dissolved in the oil phase to hydrophilic surfactants. The resulting reversal of spontaneous curvature from a water-in-oil to an oil-in-water configuration reduced the solubilization capacity for oil to such an extent that supersaturation occurred, leading to nucleation of oil droplets. In one case a dilute solution of phenylboronic acid in water diffused into an oil phase containing a monoglyceride. The reaction converted the monoglyceride to an anionic surfactant. In another case a dilute aqueous solution of the sodium salt of EDTA diffused into an oil phase containing a calcium sulfonate surfactant. The EDTA complexed calcium ions, releasing sodium ions which formed the more hydrophilic sodium salt of the sulfonate. Finally, an enzyme was used to split a double-chain phospholipid into a lysolecithin and a fatty acid. Copyright 2001 Academic Press.

Citations

Aug 16, 2012·Journal of Colloid and Interface Science·Gautam C KiniClarence A Miller
Feb 7, 2006·Journal of Colloid and Interface Science·V I UricanuW G M Agterof
Jan 29, 2010·Chemical Communications : Chem Comm·Daisuke KodaMasahiro Goto
May 21, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Lijuan WangJinfeng Dong
Nov 14, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Murielle SchmittMickaël Antoni
Dec 17, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Denise NeibloomJoelle Frechette
Jan 18, 2007·Journal of the American Chemical Society·Nobuyuki MorimotoKazunari Akiyoshi
May 1, 2004·Environmental Science & Technology·Julie B ZimmermanSteven J Skerlos
Sep 28, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Denise NeibloomJoelle Frechette

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