Nonequilibrium surfactant partitioning into microdroplets generates local phase inversion conditions and interfacial instability

January 1, 2026Soft MatterOpen Access

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Key Points

This research aims to explore how surfactant partitioning affects the stability of oil-in-water droplets.
Examined the behavior of oil-in-water droplets under varying surfactant levels.
Analyzed conditions leading to interfacial instability and phase inversion.
Investigated the effects of surfactant distribution on droplet dissociation.
Oil-in-water droplets exhibited interfacial instability under specific surfactant conditions.
Phase inversion occurred, indicating shifts in droplet stability due to surfactant partitioning.

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Findings show interfacial instability in microdroplets, suggesting implications for emulsion stability.

Oil-in-water droplets exhibit interfacial instability and dissociate under conditions of surfactant partitioning and oil solubilization.

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Birrer et al. (2026) studied this question.

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