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Effect of interactions between multiple interfaces on the rheological characteristics of double emulsions
- Source :
- Physical Review E. 97
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- In this study, we analyzed the rheological characteristics of double emulsions by using a three-dimensional lattice Boltzmann model. Numerical simulations indicate that interactions between multiple interfaces play a vital role in determining the shear stress on interfaces and affect deformations, which influence the relative viscosity of double emulsions. The large shear stress induced by droplets in contact increases the relative viscosity for high volume fractions. The double emulsions also show shear-thinning behavior, which corresponds with the Carreau model. The interfacial interference between the core and the deforming shell cause the relative viscosity to increase with increasing core-droplet radius. Finally, we investigated the dependence of the double-emulsion viscosity on the core-droplet viscosity. At high shear rates, the relative viscosity increases with increasing core-droplet viscosity. However, the trend is opposite at low shear rates, which results from the high inward flow (Marangoni flow) at low core-droplet viscosity.
- Subjects :
- Marangoni effect
Materials science
Relative viscosity
Lattice boltzmann model
technology, industry, and agriculture
Carreau fluid
Thermodynamics
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Condensed Matter::Soft Condensed Matter
Physics::Fluid Dynamics
Shear (geology)
Rheology
Shear stress
0210 nano-technology
Subjects
Details
- ISSN :
- 24700053 and 24700045
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Physical Review E
- Accession number :
- edsair.doi.dedup.....3069155503a2733a8b603cfbf2d06665