Droplet Structure in a Water-in-CO 2 Microemulsion
1996; American Chemical Society; Volume: 12; Issue: 6 Linguagem: Inglês
10.1021/la950546c
ISSN1520-5827
AutoresJulian Eastoe, Zeynep Erden Bayazıt, Sarah R. Martel, David C. Steytler, Richard K. Heenan,
Tópico(s)Hydrocarbon exploration and reservoir analysis
ResumoHigh-pressure small-angle neutron-scattering measurements show that a dichain hydrocarbon−fluorocarbon surfactant ((C7H15)(C7F15)CHSO4-Na+) stabilizes spherical droplets, with mean water core radius around 25 Å, in a water-in-CO2 microemulsion (temperature = 25 °C, pressure = 500 bar). At lower pressures droplet clustering is observed. Our structural work on this system builds on initial phase stability studies by Johnston et al. (Langmuir 1994, 10, 3536).
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