| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sollich, Peter
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Topics
Publications (17/17 displayed)
- 2022Delayed elastic contributions to the viscoelastic response of foamscitations
- 2018On the existence of thermodynamically stable rigid solidscitations
- 2017Aging and linear response in the Hébraud–Lequeux model for amorphous rheologycitations
- 2015Non-affine fluctuations and the statistics of defect precursors in the planar honeycomb latticecitations
- 2012Unified study of glass and jamming rheology in soft particle systemscitations
- 2006Simulation estimates of cloud points of polydisperse fluids
- 2006Simulation estimates of cloud points of polydisperse fluidscitations
- 2006Phase behavior of weakly polydisperse sticky hard spheres: Perturbation theory for the Percus-Yevick solution
- 2005Effects of polymer polydispersity on the phase behaviour of colloid-polymer mixturescitations
- 2005Dynamic Heterogeneity in the Glauber-Ising chain
- 2005Liquid-vapour phase behaviour of a polydisperse Lennard-Jones fluidcitations
- 2005Effects of colloid polydispersity on the phase behavior of colloid-polymer mixturescitations
- 2003Fluctuation-dissipation relations in the nonequilibrium critical dynamics of Ising modelscitations
- 2003Equivalence of driven and aging fluctuation-dissipation relations in the trap modelcitations
- 2002Observable dependence of fluctuation-dissipation relations and effective temperaturescitations
- 2001Predicting phase equilibria in polydisperse systemscitations
- 2000Aging and rheology in soft materialscitations
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article
Effects of polymer polydispersity on the phase behaviour of colloid-polymer mixtures
Abstract
We study the equilibrium behaviour of a mixture of monodisperse hard sphere colloids and polydisperse non-adsorbing polymers at their theta -point, using the Asakura-Oosawa model treated within the free-volume approximation. Our focus is the experimentally relevant scenario where the distribution of polymer chain lengths across the system is fixed. Phase diagrams are calculated using the moment free energy method, and we show that the mean polymer size xi /sub c/ at which gas-liquid phase separation first occurs decreases with increasing polymer polydispersity delta. Correspondingly, at fixed mean polymer size, polydispersity favours gas-liquid coexistence but delays the onset of fluid-solid separation. On the other hand, we find that systems with different delta values but the same mass-averaged polymer chain length have nearly polydispersity-independent phase diagrams. We conclude with a comparison to previous calculations for a semi-grand-canonical scenario, where the polymer chemical potentials are imposed; there it was found that fluid-solid coexistence was favoured over gas-liquid in some areas of the phase diagram. Our results show that this somewhat counter-intuitive result arose because the actual polymer size distribution in the system is shifted to smaller sizes relative to the polymer reservoir distribution. (62 References).