Stability of colloidal gas aphrons based on polymer-surfactant formulations and molecular dynamics insights

Amankeldiyeva A. Kaumbekova S. Khalidulliyeva A. Salimova Z. Ibrayeva A. Cochennec M. Colombano S. Amanbek Y. Wang Y. Omirbekov S.
December 2025 Nature Research

Scientific Reports
2025 #15 Issue 1

Colloidal gas aphrons (CGAs) are promising fluids for environmental remediation due to their stability, high viscosity, and effective gas transport. However, previous studies have been limited by narrow concentration ranges, leaving key mechanisms behind bubble stability insufficiently understood. This study systematically explores bubble stability across a wide range of xanthan gum (XG) and sodium dodecyl sulfate (SDS) concentrations (1–10× CMC and 1000–10,000 ppm) using advanced AI-assisted image analysis and molecular dynamics (MD) simulations. AI-enhanced microscopy enabled precise quantification of bubble size and morphology, while MD provided molecular-level insights into surfactant-polymer interactions at bubble interfaces. Results showed optimal CGA stability at specific surfactant-polymer ratios, significantly reducing gas diffusion and bubble coalescence. These integrated experimental and computational methods offer valuable guidelines for designing robust CGA-based remediation fluids.

Colloidal gas aphrons , Image analysis , Molecular dynamics simulation , Polymer , Stability , Surfactant

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Center for Energy and Advanced Materials Science, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
Department of Mathematics, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
BRGM, Orléans, F-45060, France

Center for Energy and Advanced Materials Science
Department of Chemical and Materials Engineering
Department of Mathematics
BRGM

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