Surfactant Combinations
Surfactant Combinations - Related Videos
09:34
Extraction and Characterization of Surfactants from Atmospheric Aerosols
0 Views •
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).
06:22
Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
0 Views •
Cited by 5 •
2021
A combination of surfactant washout using 0.9% saline (35 mL/kg body weight, 37 °C) and high tidal volume ventilation with low PEEP to cause moderate ventilator induced lung injury (VILI) results in experimental acute respiratory distress syndrome (ARDS). This method provides a model of lung injury with low/limited recruitability to study the effect of various ventilation strategies for extended periods.
07:20
Lavage-induced Surfactant Depletion in Pigs As a Model of the Acute Respiratory Distress Syndrome (ARDS)
0 Views •
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.
10:28
Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
0 Views •
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.
06:31
Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
0 Views •
Cited by 2 •
2020
We present a protocol to study the formation of hydrates in the presence of nonionic surfactants on the interface of a water droplet submerged in cyclopentane. The protocol consists of building a low-cost, programmable, temperature regulator. The temperature control system is combined with visualization techniques and internal pressure measurements.
FAQs
Different surfactants can contribute distinct interfacial behaviors within the same formulation. Their molecules orient water-compatible and water-avoiding regions toward the appropriate phases, while combined adsorption can reduce interfacial tension and influence micelle formation, wetting, emulsification, and membrane interaction. This complementarity may improve formulation performance beyond relying on one surfactant behavior alone.
Composition determines how the combined molecules behave in a liquid system and at biological or product interfaces. Changes in the relative surfactant content can alter spreading, micelle formation, emulsification, stability, and membrane interaction. Consequently, researchers must connect formulation composition with the desired performance and biological compatibility rather than treating all combinations as interchangeable.
A single surfactant provides one primary set of interfacial properties, whereas a combination can pair effects that support one another. The resulting system may offer more coordinated control over wetting, emulsification, micelle formation, or membrane interaction. This broader control is useful when a medical formulation must balance performance, stability, spreading, and compatibility simultaneously.
Improved interfacial performance does not by itself establish that a formulation is suitable for medical use. Surfactant combinations must also be considered in relation to biological compatibility, irritation, and toxicity, because their interaction with membranes can affect how a product behaves biologically. Formulation optimization therefore requires balancing efficacy with safety rather than maximizing interfacial activity alone.
A formulation can be developed by relating its surfactant composition to measurable goals such as spreading, stability, emulsification, and delivery behavior. Researchers then consider whether the resulting system remains biologically compatible and avoids unacceptable irritation or toxicity. This composition-to-performance approach helps identify combinations suited to the intended medical product without separating technical outcomes from safety considerations.
Their applications include emulsions, topical preparations, and drug-delivery systems. In these settings, the combination can influence how a product spreads, remains stable, interacts with membranes, or supports delivery. The relevant formulation choice depends on which outcome is most important, because a composition that benefits emulsification may also require careful evaluation of biological compatibility and irritation.