Manipulation of Pickering emulsion rheology using hydrophilically modified silica nanoparticles in brine

Citation:

C. Griffith and Daigle, H., “Manipulation of Pickering emulsion rheology using hydrophilically modified silica nanoparticles in brine,” Journal of Colloid and Interface Science, vol. 509, pp. 132-139, 2018.

Abstract:

Previous work on Pickering emulsions has shown that bromohexadecane-in-water emulsions (50% oil) stabilized with fumed and spherical particles modified with hexadecyl groups develop a noticeable zero shear elastic storage modulus (G′0) of 200 Pa and 9 Pa, respectively, while in just 50 mM NaCl. This high G′0 can be problematic for subsurface applications where brine salinities are higher and on the order of 600 mM NaCl. High reservoir salinity coupled with low formation pressure drops could prevent an emulsion with a high G′0 from propagating deep into formation. It is hypothesized that G′0 of an emulsion can be minimized by using sterically stabilized silica nanoparticles modified with the hydrophilic silane (3-glycidyloxypropyl)trimethoxysilane (glymo).

Notes:

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