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arXiv · 2405.09382

Matrix viscoelasticity decouples bubble growth and dynamics in coarsening foams

Chiara Guidolin·Emmanuelle Rio·Roberto Cerbino·Fabio Giavazzi·Anniina Salonen
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Abstract

Pressure-driven coarsening triggers bubble rearrangements in liquid foams. Our experiments show that changing the continuous phase rheology can alter these internal bubble dynamics without influencing the coarsening kinetics. Through bubble tracking, we find that increasing the matrix yield stress permits bubble growth without stress relaxation via neighbor-switching events, promoting more spatially homogeneous rearrangements and decoupling bubble growth from dynamics. This eventually leads to a structural change which directly impacts the foam mechanical and stability properties, essential for applications in various technological and industrial contexts.

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Chiara Guidolin, Emmanuelle Rio, Roberto Cerbino, Fabio Giavazzi, Anniina Salonen. 2024-05-15. Matrix viscoelasticity decouples bubble growth and dynamics in coarsening foams. https://arxiv.org/abs/2405.09382

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