Structure of liquid films of an ordered foam confined in a narrow channel.
A bamboo foam is the simplest case of an ordered foam confined in a narrow channel. It is made of a regular film distribution, arranged perpendicularly to the channel. Our work consists of studying the structural properties of several films taken in a drained foam. X-ray experiments highlighted the equality of the equilibrium thickness for each film within a foam. The same thickness was found as by measurements of disjoining pressure isotherms, proving as well that films of a bamboo foam behave like isolated ones. The refinement of X-ray data by a simple model of specular reflectivity showed a significant variation of the electronic distribution of the surfactant layer for a common black film forwarding from one equilibrium state to another. A discussion on the organization of the surfactant molecules to the gas/liquid interface and film is proposed.
Terriac
Emmanuel
E
Groupe Matière Condensée et Matériaux, UMR CNRS 6626, Université de Rennes I, Campus de Beaulieu, Rennes Cedex, France.
Artzner
Franck
F
Moréac
Alain
A
Meriadec
Cristelle
C
Chasle
Patrick
P
Ameline
Jean-Claude
JC
Ohana
Jérémy
J
Emile
Janine
J