Behavior of hydrophobically modified and synthetic water-soluble polymers in solution and in the presence of sodium dodecylsulfate
- Columbia Univ., New York, NY (United States)
In enhanced oil recovery, interactions between polymers and surfactant solution is pushed through the pores of the oil reservoir by applying pressure on a viscous polymer solution injected after the surfactant solution. It is of paramount importance to characterize these interactions in terms of effects on polymer and surfactant solution properties as well as changes in the adsorption behavior of both the interacting species because these will influence the feasibility of the process. The present study used fluorescence spectroscopy to determine changes in the aggregate size of sodium dodecylsulfate (SDS) micelles bound to polyethylene glycol (PEG) in the presence of various salts of cesium, sodium, lithium and magnesium as well as changes in the adsorption characteristics of the polymer and surfactant due to complexation. It is observed that the size of the SDS aggregate bound to PEG depends to a great extent on the cation in solution as well as the affinity of that ion towards PEG. Interactions between PEG and SDS can be used to force the adsorption of each other on substrates where they normally do not absorb. Results are discussed in terms of competitive binding between the cation and the surfactant to the polymer.
- OSTI ID:
- 141332
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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