Investigation of adsorption processes using atomic force microscopy on samples of terrigenous rocks from zapadno-salymskoye field

Yu S. Zamula, L. A. Kovaleva, M. V. Mavletov, I. N. Koltsov, I. Sh Akhatov

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The purpose of the experimental study is to estimate the thickness of the adsorbed surfactant layer on substrates of different mineral composition using AFM. Two series of experimental studies were set to study the adsorption of surfactant using AFM: 1) formation of surfactant aggregates due to adsorption from solution on a clean substrate, and 2) creating a residual oil layer on a substrate and washing it off using a surfactant. The substrates were selected: natural core and also mica and glass, as they are part of the real oil-bearing core. Both series used the same surfactant in two different concentrations (0.7 and 2.1%). For determination the thickness of the complex constructed adsorbed layer, filled with uniform and non-uniform layers of surfactant molecules a new technique was developed. The essence of this technique is a "scratching" the adsorption layer with subsequent extraction of sectional profile of obtained scan.

    Original languageEnglish
    Pages (from-to)54-58
    Number of pages5
    JournalNeftyanoe Khozyaystvo - Oil Industry
    Issue number2
    Publication statusPublished - 2015

    Keywords

    • Adsorption
    • Atomic force microscopy
    • Surfactant

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