Surfactant Concentration Optimization
Surfactant Concentration Optimization - Related Videos
09:34
Extraction and Characterization of Surfactants from Atmospheric Aerosols
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Cited by 26 •
2017
Methods are presented for the targeted extraction of surfactants present in atmospheric aerosols and the determination of their absolute concentrations and surface tension curves in water, including their Critical Micelle Concentration (CMC).
10:28
Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
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Cited by 15 •
2014
This paper demonstrates the experimental procedure to measure terminal settling velocities of spherical particles in surfactant-based shear thinning viscoelastic fluids. Fluids over a wide range of rheological properties are prepared and settling velocities are measured for a range of particle sizes in unbounded fluids and fluids between parallel walls.
07:20
Lavage-induced Surfactant Depletion in Pigs As a Model of the Acute Respiratory Distress Syndrome (ARDS)
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Cited by 21 •
2016
Repeated pulmonary lavages in anesthetized pigs induce lung injury resembling major aspects of human acute respiratory distress syndrome (ARDS). For this purpose the lungs are repeatedly lavaged with 0.9% saline at 37 °C. The goal of the protocol is a reproducible mitigation of gas exchange and hemodynamics for research in ARDS.
08:17
Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
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Cited by 24 •
2011
Fluorescent nanoparticles produced in our lab are used for imaging ion concentrations and ion fluxes in biological systems such as cells during signaling and interstitial fluid during physiological homeostasis.
02:41
Concentration Cells
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2020
A concentration cell is a type of a voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and using the same electrode, differing only in the concentration of one redox species. A concentration cell's potential, therefore, is determined only by the concentration difference of the particular redox species. Consider the following voltaic cell: From the given information, the cell potential of this concentration cell can be calculated using...
FAQs
The critical micelle concentration, or CMC, marks a change in how added surfactant is distributed. Before this point, increasing concentration promotes adsorption at interfaces and generally lowers surface or interfacial tension. Afterward, additional molecules primarily assemble into micelles in solution, so further concentration increases produce much less tension reduction. This transition helps identify a practical operating range.
An optimum is selected by balancing target performance against stability and material use, not by maximizing surfactant content. A higher concentration may add material while producing little further reduction in surface or interfacial tension once micelles dominate. The preferred condition is therefore the concentration or range that meets the formulation or experimental objective without unnecessary excess.
A concentration-response series can show where added surfactant continues to improve interfacial behavior and where the response levels off. The transition associated with the critical micelle concentration is especially informative because it separates adsorption-driven changes from later micelle formation. Comparing the series helps researchers select a useful range rather than relying on a single concentration.
Begin by preparing or evaluating a series of surfactant concentrations that spans the expected operating region. Measure the property relevant to the system, such as surface or interfacial tension, and assess desired behavior, including emulsification, wetting, detergency, dispersion, or stability. Compare results across the series, then choose the concentration or range that balances performance, stability, and material use.
Reproducibility improves when the selected concentration is based on measured behavior across a defined series rather than an arbitrary single value. Recording the relationship between concentration and the relevant outcome identifies an effective operating range and makes the condition easier to repeat. This approach also reveals whether additional surfactant meaningfully changes performance or mainly increases micelle formation.
Concentration selection is useful when surfactants must support emulsification, wetting, detergency, dispersion, or formulation stability. Each application can require a different balance between interfacial performance and material use, so measurements across concentrations help identify suitable conditions. In laboratory and industrial chemistry, this information supports more consistent formulations and reduces reliance on excess surfactant.