Microimmiscible aqueous alcohols: dynamics and thermodynamics
- Event time: 1:00pm
- Event date: 14th March 2005
- Speaker: Simon Bates (Formerly School of Physics & Astronomy, University of Edinburgh)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
In this talk I will present some recent results from our continuing exploration of the microimmiscibility of aqueous methanol using molecular simulation. After reassuring you that there really is something more going on than simply random clustering, I will present some results on the structure and dynamics of the water molecules that form these persistent clusters. Water on the interior of medium-sized clusters (a few 10s of molecules) appears to be more structured than the pure liquid. Finally, I will show how this partitioning of cluster members can be used to provide a simple yet quantitative explanation of the much-discussed anomalous negative excess entropy of mixing of these solutions.
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..