Jump to main content
Jump to site search


Colloidal gelation, a means to study elasto-capillarity effects in foam

Author affiliations

Abstract

We explore the evolution of the mechanical properties of a coarsening foam containing colloidal particles that undergo a sol–gel transition in the continuous phase. This enables us to investigate the impact of elasto-capillarity on foam mechanics over a wide range of elasto-capillary numbers. Right after initiating aggregation the foam mechanics is predominantly determined by the elasticity of the bubbles, while the contributions of the continuous phase become dominant as the colloidal particles form a gel. Taking into account the confined configuration of the foam skeleton for the formation of a space spanning gel, we find that for elasto-capillary numbers exceeding unity the foam mechanics can be described as a simple linear combination of the contributions due to respectively the bubble elasticity and the elastic skeleton. Surprisingly, the contributions of the elastic skeleton to the overall foam mechanics are larger for smaller elasto-capillary numbers, scaling as the inverse of the capillary number.

Graphical abstract: Colloidal gelation, a means to study elasto-capillarity effects in foam

Back to tab navigation

Article information


Submitted
21 Nov 2019
Accepted
29 Jan 2020
First published
29 Jan 2020

Soft Matter, 2020, Advance Article
Article type
Paper

Colloidal gelation, a means to study elasto-capillarity effects in foam

A. Mikhailovskaya, V. Trappe and A. Salonen, Soft Matter, 2020, Advance Article , DOI: 10.1039/C9SM02301A

Social activity

Search articles by author

Spotlight

Advertisements