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Title: Foam Microrheology

Abstract

The microrheology of liquid foams is discussed for two different regimes: static equilibrium where the capillary number Ca is zero, and the viscous regime where viscosity and surface tension are important and Ca is finite. The Surface Evolver is used to calculate the equilibrium structure of wet Kelvin foams and dry soap froths with random structure, i.e., topological disorder. The distributions of polyhedra and faces are compared with the experimental data of Matzke. Simple shearing flow of a random foam under quasistatic conditions is also described. Viscous phenomena are explored in the context of uniform expansion of 2D and 3D foams at low Reynolds number. Boundary integral methods are used to calculate the influence of Ca on the evolution of foam microstructure, which includes bubble shape and the distribution of liquid between films, Plateau borders, and (in 3D) the nodes where Plateau borders meet. The micromechanical point of view guides the development of structure-property-processing relationships for foams.

Authors:
; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
13991
Report Number(s):
SAND99-2320C
TRN: AH200135%%530
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 15th Annual Meeting of the Polymer Processing Society (PPS)'s, Hertogenbosch (NL), 05/31/1999--06/04/1999; Other Information: PBD: 1 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BUBBLES; MICROSTRUCTURE; POLYMERS; REYNOLDS NUMBER; SOAPS; SURFACE TENSION; VISCOSITY; FOAMS; RHEOLOGY

Citation Formats

KRAYNIK,ANDREW M., LOEWENBERG,MICHAEL, and REINELT,DOUGLAS A. Foam Microrheology. United States: N. p., 1999. Web.
KRAYNIK,ANDREW M., LOEWENBERG,MICHAEL, & REINELT,DOUGLAS A. Foam Microrheology. United States.
KRAYNIK,ANDREW M., LOEWENBERG,MICHAEL, and REINELT,DOUGLAS A. Wed . "Foam Microrheology". United States. https://www.osti.gov/servlets/purl/13991.
@article{osti_13991,
title = {Foam Microrheology},
author = {KRAYNIK,ANDREW M. and LOEWENBERG,MICHAEL and REINELT,DOUGLAS A.},
abstractNote = {The microrheology of liquid foams is discussed for two different regimes: static equilibrium where the capillary number Ca is zero, and the viscous regime where viscosity and surface tension are important and Ca is finite. The Surface Evolver is used to calculate the equilibrium structure of wet Kelvin foams and dry soap froths with random structure, i.e., topological disorder. The distributions of polyhedra and faces are compared with the experimental data of Matzke. Simple shearing flow of a random foam under quasistatic conditions is also described. Viscous phenomena are explored in the context of uniform expansion of 2D and 3D foams at low Reynolds number. Boundary integral methods are used to calculate the influence of Ca on the evolution of foam microstructure, which includes bubble shape and the distribution of liquid between films, Plateau borders, and (in 3D) the nodes where Plateau borders meet. The micromechanical point of view guides the development of structure-property-processing relationships for foams.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

Conference:
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