Worm-like reversed micelles with a CO2-philic surfactant
Hydrotropes (Figure 3 A-C) are known viscosifying agents with surfactants in organic solvents1 and interestingly now in supercritical CO2 (scCO2)5. The mechanism is hydrotrope-induced micelle growth to generate worm-like reverse micelles (WLRMs) 1,3,5. This experiment is to develop new surfactant+hydrotrope (or phenol) gelator combinations which are not only organophilic, but are also at same time CO2-philic. These would be unique WLRM systems, able to viscosify/gelate both oils and scCO2. In this initial phase the ILL experiment will study organogelation, and these results will inform future studies with the same mixtures in scCO2 under high pressure conditions at ISIS (to be submitted Oct 14). A new approach taken here is to combine hydrotropes and phenols with a known CO2-phillic surfactant (TC14, Figure 2). This research has received external publicity through the UK government agency UK trade and Investment (UKTI)7 and is supported by the G8 Research Councils Initiative on Multilateral Research Funding - G8-2012 (Bristol, Nice and Hirosaki) - EP/K020676/1 and an STFC funded studentship ‘Controlling fluid properties of dense CO2’
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EASTOE Julian; CZAJKA Adam; GRILLO Isabelle; HAZELL Gavin; NAVARRO Miguel; Jocelyn Peach; PEGG Jonathan and YAN Ci. (2015). Worm-like reversed micelles with a CO2-philic surfactant. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1427
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