%0 Book Section %1 statphys23_0924 %A Martinez, A.E. Cervantes %A Binks, B.P. %A Langevin, D. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K coarsening drainage foam nanoparticle statphys23 topic-7 %T Study of Coarsening on Aqueous Foams Stabilized by Silica Nanoparticles %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=924 %X For many years, aqueous foams studies were made by using surfactants and/or macromolecules (such as proteins) as stabilizers. Recently several studies have been made with solid particles which stabilize the foams. These investigations suggest that the foams produced with particles are much more stable that those produced with surfactant or proteins. In this work we studied aqueous foams stabilized by hydrophobically modified silica nanoparticles. The foams have been produced by turbulent mixing in order to control the liquid fraction in the foam and to produce both wet and dry foams. We have studied various foam properties such as drainage and coarsening. For this purpose, we use a multiple light scattering technique in the coarsening studies, and a rotating cell set up in order to avoid drainage. The results show that foams produced with hydrophobically modified silica nanoparticles coarsen much more slowly than surfactant or protein foams. We have also studied supported thin films and we will try to correlate the different observations with earlier studies of the surface layers formed by the particles (1) (1) M.Safouane, D.Langevin, B.P.Binks, submitted

@incollection{statphys23_0924, abstract = {For many years, aqueous foams studies were made by using surfactants and/or macromolecules (such as proteins) as stabilizers. Recently several studies have been made with solid particles which stabilize the foams. These investigations suggest that the foams produced with particles are much more stable that those produced with surfactant or proteins. In this work we studied aqueous foams stabilized by hydrophobically modified silica nanoparticles. The foams have been produced by turbulent mixing in order to control the liquid fraction in the foam and to produce both wet and dry foams. We have studied various foam properties such as drainage and coarsening. For this purpose, we use a multiple light scattering technique in the coarsening studies, and a rotating cell set up in order to avoid drainage. The results show that foams produced with hydrophobically modified silica nanoparticles coarsen much more slowly than surfactant or protein foams. We have also studied supported thin films and we will try to correlate the different observations with earlier studies of the surface layers formed by the particles (1) (1) M.Safouane, D.Langevin, B.P.Binks, submitted}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Martinez, A.E. Cervantes and Binks, B.P. and Langevin, D.}, biburl = {https://www.bibsonomy.org/bibtex/2debc82ae222e4e0c3eb3631394f5e955/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {c83e84f5d40d8154e89181324a655ed3}, intrahash = {debc82ae222e4e0c3eb3631394f5e955}, keywords = {coarsening drainage foam nanoparticle statphys23 topic-7}, month = {9-13 July}, timestamp = {2007-06-20T10:16:34.000+0200}, title = {Study of Coarsening on Aqueous Foams Stabilized by Silica Nanoparticles}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=924}, year = 2007 }