Volume 84 Issue 34 | p. 44 | Concentrates
Issue Date: August 21, 2006

CO2 enables 'switchable surfactants'

Department: Science & Technology

Being able to reversibly generate stable emulsions could help facilitate syntheses, separations, and processing of a variety of chemicals. Philip G. Jessop of Queen's University, Kingston, Ontario, and his colleagues have made this possible by creating "switchable surfactants" that need only CO2 and air to turn on and off (Science 2006, 313, 958). A year ago, Jessop's group reported switchable solvent systems based on the same concept (C&EN, Aug. 29, 2005, page 27). The researchers . . .

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