The influence of atmospheric carbonic acid upon the surface tension of aqueous solutions of sodium salts of fatty acids

Lottermoser, A.

doi:10.1039/tf9353100200

Cited by 20 publications

(6 citation statements)

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“…It has been known for many years that exposure of aqueous solutions of fatty acid sodium salts to CO 2 causes the air/water surface tension to change. 23 Moore and Lefevre 24 described an emulsion polymerization using sodium oleate as the surfactant and styrene and acrylonitrile as the comonomers. Aer the latex was produced, they showed that it could be destabilized by the addition of CO 2 , presumably because the acid form of the surfactant was less effective than the anionic form at latex stabilization.…”

Section: Introductionmentioning

confidence: 99%

Switchable anionic surfactants for the remediation of oil-contaminated sand by soil washing

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Switchable anionic surfactants for the remediation of oil-contaminated sand by soil washing

et al. 2014

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“…The idea that CO 2 bubbled into water can re-protonate anionic surfactants such as soap (sodium alkanoates) has been known for a very long time. 61 An example of the use of this effect was the patent by Moore and Lefevre on the emulsion polymerization of butadiene/styrene in an emulsion stabilized by sodium oleate. 62 After emulsion polymerization, the generated latex colloidal suspension must be coagulated before the polymer can be isolated.…”

Section: Switchable Surfactantsmentioning

confidence: 99%

CO2-triggered switchable solvents, surfactants, and other materials

Jessop

Mercer

Heldebrant

2012

Energy Environ. Sci.

462

305

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Waste CO 2 at atmospheric pressure can be used to trigger dramatic changes in the properties of certain switchable materials. Compared to other triggers such as light, acids and oxidants, CO 2 has the advantages that it is inexpensive, nonhazardous, non-accumulating in the system, easily removed, and it does not require the material to be transparent. Known CO 2 -triggered switchable materials now include solvents, surfactants, solutes, catalysts, particles, polymers, and gels. These have also been described as ''smart'' materials or, for some of the switchable solvents, ''reversible ionic liquids''. The added flexibility of switchable materials represents a new strategy for minimizing energy and material consumption in process and product design.

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“…1 There are, in addition, a very small number of surfactants that can be switched on and off by the addition and removal of CO 2 . The first report on the effect of CO 2 on anionic surfactants (soap) came in 1936 2 and a practical application of this phenomenon has been described by Moore. 3 More recently, we have reported long-tail amidines as CO 2switchable cationic surfactants.…”

Section: Introductionmentioning

confidence: 99%