The rheology of nanoparticle layers and the relation to foam stability
- Event time: 1:00pm
- Event date: 10th October 2011
- Speaker: Duyang Zang (Northwestern Polytechnical University)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
It has been found that foams stabilized by nanoparticles exhibit extraordinary stability. The bubble can last for months and coarsening can be suppressed. To elucidate the underlying mechanisms, we have studied the properties of silica nanoparticle monolayers at the air-water interface as a model of the bubble film. We focus on the rheological properties of these layers and try to clarify the relation between layer rheology and the foam stability. In the presentation, I will give a brief review of the interfacial rheology as well as my previous results.
This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..