Paper Number
PO50 

Session
Poster Session

Title
Influence of surfactants, polymers and proteins on foam film drainage

Presentation Date and Time
October 12, 2022 (Wednesday) 6:30

Track / Room
Poster Session / Riverwalk A

Authors (Click on name to view author profile)

  1. Xu, Chenxian (University of Illinois Chicago, Department of Chemical Engineering)
  2. Hassan, Lena (University of Illinois Chicago, Department of Chemical Engineering)
  3. Ochoa, Chrystian (RheoSense Inc.)
  4. Sharma, Vivek (University of Illinois Chicago, Department of Chemical Engineering)

Author and Affiliation Lines (in printed abstract book)
Chenxian Xu1, Lena Hassan1, Chrystian Ochoa2 and Vivek Sharma1
1Department of Chemical Engineering, University of Illinois Chicago, Chicago, IL; 2RheoSense Inc., Chicago, IL

Speaker / Presenter 
Xu, Chenxian

Keywords
flow-induced instabilities; foams; surfactants

Text of Abstract
Foams can be described as colloidal dispersions containing large gas cells separated by thin liquid films, whose junctions are called Plateau borders. Drainage of individual ultrathin foam films (thickness < 100 nm) into Plateau borders is governed by the interplay of capillarity, disjoining pressure, viscosity, and interfacial rheology. It is well-established that confinement-induced structuring and layering of supramolecular structures like micelles, liquid crystals, colloidal particles, or polyelectrolytes within foam films results in drainage via stratification. Only a few examples show the possibility of stratification in foam films containing polymers or proteins. In this contribution, we visualize and analyze drainage in foam formulated with surfactants, proteins, polymers, and their mixtures, and describe the specific connection to foam stability and applications in diverse areas in foods, cosmetics, environmental remediation, oil recovery, and healthcare.