An investigation of non-fluorous surfactant Dynol-604 based water-in-CO2 reverse micelles by small angle X-ray scattering

Synchrotron radiation small-angle X-ray scattering (SAXS) technique was used to quantitatively derive structural information of the Dynol-604 (a surfactant) based water-in-CO2 reverse micelles. By using the Guinier plot (ln I(q) vs. q2) on the data sets in a defined small q range (0.025–0.040 Å−1), the radii of the reverse micelles at different pressures and loading water were estimated, which were in the range of 73.8 to ∼78.1 Å.