Results 41 to 50 of about 14,645 (208)
Journal of Petroleum Exploration and Production Technology, 2018 Crude oil with a high wax content and high pour point can be very challenging when enhanced oil recovery by surfactant flooding is to be applied. High wax content in crude oil will lead to high intermolecular interaction because of the increasing ...
Taufan Marhaendrajana +4 more
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Study on the effect of NMR-based surfactants on pore wetting of high-order coal
Meitan kexue jishu, 2023 High-order coal has the characteristics of weak water absorption due to the development of micropores. From the perspective of micropores, it is of great significance to study the improvement effect of different types of surfactants on the wettability of
Ming YANG +5 more
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Meitan xuebao, 2023 A solid (coal) - gas (CH4) - liquid (surfactant) three-phase interaction system model is established based on the Grand Canonical Monte Carlo (GCMC) and Molecular Dynamics (MD) methods.
Yu SHI +5 more
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Nonionic polymer surfactants [PDF]
Journal of Polymer Science: Polymer Chemistry Edition, 1982 AbstractNonionic water‐soluble polymeric surfactants have been prepared by addition of long‐chain n‐alkyl epoxides to nonionic cellulose ethers. The polymers exhibit properties which can be explained by interchain association. The relationship between hydrocarbon‐modifier carbon number and the onset of association follows a linear relation analogous to
openaire +1 more source
Influence of Added Surfactants on the Rheology and Surface Activity of Polymer Solutions
ChemEngineeringSteady-shear rheology and surface activity of surfactant–polymer solutions were investigated experimentally. Four different polymers were studied as follows: cationic hydroxyethyl cellulose, nonionic hydroxyethyl cellulose, nonionic guar gum, and anionic
Rajinder Pal, Chung-Chi Sun
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A Normalized HLD (HLDN) Tool for Optimal Salt-Concentration Prediction of Microemulsions
Applied Sciences, 2021 Optimal condition-based microemulsion is key to achieving great efficiency in oil removal. One useful empirical equation to predict an optimal condition is a hydrophilic–lipophilic deviation (HLD).
Virin Kittithammavong +2 more
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Formation of microemulsions in mixed ionic-nonionic surfactant systems
, 1998 Phase behavior of a mixed surfactant, sodium dodecyl sulfate + lipophilic poly(oxyethylene) dodecyl ether, in a brine-decane system was investigated at a constant brine/decane weight ratio equal to 1.
Kunieda, Hironobu +4 more
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Interactions Between Nonionic Surfactant Monomers, Hydrophobic Organic Compounds and Soil
, 1992 Nonionic surfactant at aqueous-phase concentrations less than the CMC can affect the distribution of hydrophobic organic compounds (HOCs) in soil/aqueous systems. Sub-CMC levels of nonionic surfactant can enhance the apparent aqueous-phase HOC solubility,
Z. Liu, R. G. Luthy, D. A. Edwards
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Investigating oil solubilization into nonionic micelles by Raman multivariate curve resolution
Aggregate, 2023 Hydrophobic hydration, whereby water spontaneously structures around hydrophobic and amphiphilic molecules, plays a key role in the process of surfactant micelle formation and micellar oil solubilization.
Ciera M. Wentworth +3 more
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Aggregation behaviour of mixed nonionic-nonionic surfactant solution system [PDF]
, 2009 The aggregation behavior in mixed system of nonionic-nonionic surfactant solution was studied in this research. The solubility of pyrene in Triton X-100 and Brij 35 at different concentration was evaluated and the critical micelle concentration (cmc ...
Norjariah, Sahari
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