Abstract:

This dataset contains (a) measured interfacial tensions at the interfaces between bulk seawater and a model crude oil containing 0.5wt% seawater and 2 wt% mixtures of the surfactants Tween 80, Span 80, and dioctyl sodium sulfosuccinate (DOSS); (b) micrographs, obtained using cryogenic transmission electron microscopy, of these same surfactant-oil-seawater-mixtures; (c) unprocessed dynamic light scattering (DLS) autocorrelation data obtained from these same surfactant-oil-seawater-mixtures; and (d) z-average particle diameters and polydispersities calculated from this raw autocorrelation data for these same surfactant-oil-seawater mixtures, as described in the publication supported by this dataset. This dataset supports the publication.

Suggested Citation:

Riehm, David, et al.. 2015. Dataset supporting the publication "Water-in-oil microstructures formed by marine oil dispersants in a model crude oil". Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7VT1Q2D

Publications:

Riehm, D. A., Rokke, D. J., & McCormick, A. V. (2016). Water-in-Oil Microstructures Formed by Marine Oil Dispersants in a Model Crude Oil. Langmuir. doi:10.1021/acs.langmuir.6b00643

Foster, E. L., Xue, Z., Roach, C. M., Larsen, E. S., Bielawski, C. W., & Johnston, K. P. (2014). Iron Oxide Nanoparticles Grafted with Sulfonated and Zwitterionic Polymers: High Stability and Low Adsorption in Extreme Aqueous Environments. ACS Macro Letters, 3(9), 867–871. doi:10.1021/mz5004213

Purpose:

In this work, we develop a model crude oil and show that blends of Tween 80, Span 80, and DOSS, which are commonly used as the active agents in dispersants around the world, form water-in-oil microstructures when added to the model crude oil along with synthetic seawater. This has been hypothesized previously but never demonstrated, and the characteristics of these microstructures are explored along with their implications for the design of effective dispersants.

Data Parameters and Units:

Droplet width (mm); droplet length (mm); tensiometer speed (RPM); interfacial tension (mN/m); autocorrelation delay time (μs); normalized autocorrelation (dimensionless); microstructure diameter (nm); microstructure polydispersity (dimensionless)

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