Phase coexistence in polydisperse athermal polymer-colloidal mixture

The Journal of Chemical Physics
S P HlushakPeter T Cummings

Abstract

A theoretical scheme developed earlier [Y. V. Kalyuzhnyi et al., Chem. Phys. Lett. 443, 243 (2007)] is used to calculate the full phase diagram of polydisperse athermal polymer-colloidal mixture with polydispersity in both colloidal and polymeric components. In the limiting case of bidisperse polymer-colloidal mixture, theoretical results are compared against computer simulation results. We present the cloud and shadow curves, critical binodals, and distribution functions of the coexisting phases and discuss the effects of polydispersity on their behavior. According to our analysis polydispersity extends the region of the phase instability, shifting the critical point to the lower values of the pressure and density. For the high values of the pressure polydispersity causes strong fractionation effects, with the large size colloidal particles preferring the low-density shadow phase and long chain length polymeric particles preferring the high-density shadow phase.

References

Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·M DijkstraR Evans
Apr 12, 2003·Advances in Colloid and Interface Science·R TuinierC G de Kruif
Mar 4, 2005·The Journal of Chemical Physics·Moreno Fasolo, Peter Sollich
May 6, 2006·The Journal of Chemical Physics·Hendrik Hansen-Goos, Roland Roth

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Citations

Oct 10, 2009·The Journal of Chemical Physics·Shiqi Zhou, J R Solana
Oct 17, 2014·The Journal of Chemical Physics·Kurt BinderAntonia Statt
Nov 13, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Yu V Kalyuzhnyi, V Vlachy

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