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The Pristine Oil/Water Interface: Surfactant‐Free Hydroxide‐Charged Emulsions
Author(s) -
Beattie James K.,
Djerdjev Alex M.
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200453916
Subject(s) - pulmonary surfactant , emulsion , hydroxide , chemical engineering , homogenization (climate) , water in oil , chemistry , oil droplet , surface charge , ion , inorganic chemistry , organic chemistry , biodiversity , ecology , engineering , biology
Stable oil‐in‐water emulsions are obtained in alkaline solution in the absence of any conventional surfactant. The oil droplets are charged by hydroxide ions (see picture). The surface charge density is obtained by measuring the size of the emulsion droplets by electroacoustics and the quantity of NaOH required to keep the pH constant during homogenization.