Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-08-31
Physics
Condensed Matter
Soft Condensed Matter
43 pages, 12 figures, and 1 table
Scientific paper
10.1063/1.2358136
We study the effects of size polydispersity on the gas-liquid phase behaviour of mixtures of sticky hard spheres. To achieve this, the system of coupled quadratic equations for the contact values of the partial cavity functions of the Percus-Yevick solution is solved within a perturbation expansion in the polydispersity, i.e. the normalized width of the size distribution. This allows us to make predictions for various thermodynamic quantities which can be tested against numerical simulations and experiments. In particular, we determine the leading-order effects of size polydispersity on the cloud curve delimiting the region of two-phase coexistence and on the associated shadow curve; we also study the extent of size fractionation between the coexisting phases. Different choices for the size-dependence of the adhesion strengths are examined carefully; the Asakura-Oosawa model of a mixture of polydisperse colloids and small polymers is studied as a specific example.
Fantoni Riccardo
Gazzillo Domenico
Giacometti Achille
Sollich Peter
No associations
LandOfFree
Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-396726