Results 41 to 50 of about 143,309 (301)

Influence of Added Surfactants on the Rheology and Surface Activity of Polymer Solutions

open access: yesChemEngineering
Steady-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
doaj   +1 more source

Effects of nanoparticle composite surfactants on the adsorption/desorption and diffusion of CH4 in coal

open access: yesMeitan 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
doaj   +1 more source

Formation of microemulsions in mixed ionic-nonionic surfactant systems

open access: yes, 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
core   +1 more source

Surfactants and enhanced oil recovery [PDF]

open access: yes, 1988
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A large number of commercial and some novel Brunel synthesised surfactants have been studied with a view to their potential usefulness for enhanced oil ...
Pilc, Jennifer
core   +5 more sources

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

A Normalized HLD (HLDN) Tool for Optimal Salt-Concentration Prediction of Microemulsions

open access: yesApplied 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
doaj   +1 more source

Interactions Between Nonionic Surfactant Monomers, Hydrophobic Organic Compounds and Soil

open access: yes, 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
core   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Investigating oil solubilization into nonionic micelles by Raman multivariate curve resolution

open access: yesAggregate, 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
doaj   +1 more source

Aggregation behaviour of mixed nonionic-nonionic surfactant solution system [PDF]

open access: yes, 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
core  

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