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Marangoni flows triggered by cationic-anionic surfactant complexation
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DOI：10.1016/j.jcis.2024.07.014.png)
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摘要
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Hypothesis: The gradients in surfactant distribution at a fluid-fluid interface can induce fluid flow known as the Marangoni flow. Fluid interfaces found in biological and environmental systems are seldom clean, where mixtures of various surfactants are present. The presence of multi-component surfactant mixtures introduces the possibility of interactions among constituents, which may impact Marangoni flows and alter flow dynamics. Experiments: We employed flow visualization, surface tension and reaction kinetic measurements, and numerical simulations to quantitatively investigate the Marangoni flows induced by the reacting surfactant mixtures. Different binary surfactant mixtures were utilized for comparative analysis. Findings: The impact of surfactant interactions on Marangoni flows is confirmed through the observation of diverse complex flow patterns that result from the combination of oppositely charged surfactants in varying composition ratios and concentrations. Unique flow patterns originate from the composition-dependent interfacial phenomena upon mixing surfactants. Our findings provide vital insights that could be used to guide the development of effective oil remediation or the spreading of waterborne pathogens in contaminated regions.
Keyword:
Surfactants
Marangoni flows
Complexation
Surface tension
Reaction kinetics
期刊
IF:
9.7
论文数:
3.7W
被引数:
14.7W
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引用论文
MICROCALORIMETRY . THERMODYNAMICS OF REACTION OF AN ANIONIC DETERGENT WITH A CATIONIC DETERGENT
PREAI
分享收藏Impact of solutal Marangoni convection on oil recovery during chemical flooding.png)
PETROLEUM SCIENCE
OAAI
PETROLEUM SCIENCEIF6.1
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