Rigidity Percolation in Particle-Laden Foams

by: Sylvie C Addad, Marcel Krzan, Reinhard Höhler, Benjamin Herzhaft

Physical Review Letters, Vol. 99, No. 16. (2007)

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Abstract

We study the viscoelastic behavior of aqueous foam mixed with solid noncolloidal particles. We show that adding a tiny amount of grains can enhance the elastic and loss shear moduli by more than 1 order of magnitude. The scaling of these moduli with solid volume fraction is in qualitative agreement with that predicted by an effective-medium rigidity percolation model. We present a simple model, based on capillary attraction, to explain the particle-size dependence of the threshold.

@article{citeulike:2552539, abstract = {We study the viscoelastic behavior of aqueous foam mixed with solid noncolloidal particles. We show that adding a tiny amount of grains can enhance the elastic and loss shear moduli by more than 1 order of magnitude. The scaling of these moduli with solid volume fraction is in qualitative agreement with that predicted by an effective-medium rigidity percolation model. We present a simple model, based on capillary attraction, to explain the particle-size dependence of the threshold.}, author = {Addad, Sylvie C. and Krzan, Marcel and H\"ohler, Reinhard and Herzhaft, Benjamin }, citeulike-article-id = {2552539}, doi = {10.1103/PhysRevLett.99.168001}, journal = {Physical Review Letters}, keywords = {2007, colloids, foam}, number = {16}, posted-at = {2008-03-18 19:17:32}, priority = {2}, publisher = {APS}, title = {Rigidity Percolation in Particle-Laden Foams}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000099000016168001000001\&idtype=cvips\&gifs=yes}, volume = {99}, year = {2007} }

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TY - JOUR ID - citeulike:2552539 L3 - citeulike-article-id:2552539 TI - Rigidity Percolation in Particle-Laden Foams JF - Physical Review Letters VL - 99 IS - 16 PB - APS N2 - We study the viscoelastic behavior of aqueous foam mixed with solid noncolloidal particles. We show that adding a tiny amount of grains can enhance the elastic and loss shear moduli by more than 1 order of magnitude. The scaling of these moduli with solid volume fraction is in qualitative agreement with that predicted by an effective-medium rigidity percolation model. We present a simple model, based on capillary attraction, to explain the particle-size dependence of the threshold. KW - 2007 KW - colloids KW - foam AU - Addad, Sylvie AU - Krzan, Marcel AU - H\"ohler, Reinhard AU - Herzhaft, Benjamin PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000016168001000001&idtype=cvips&gifs=yes ER -

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