The interface in demixed colloid-polymer systems: wetting, waves and droplets

Soft Matter
Dirk G A L Aarts

Abstract

Phase transitions in colloid-polymer mixtures have attracted a large amount of attention over the last 20 years (W. C. K. Poon, , 2002, , R859; R. Tuinier, J. Rieger and C. G. de Kruif, , 2003, , 1). By comparison, the interfacial tension between the coexisting phases has received little attention. Here, we show that the ultralow interfacial tension in fluid-fluid demixed colloid-polymer systems, which is roughly one million times smaller than in ordinary liquids, manifests itself in a wide variety of interface characteristics and processes. Discussed are the interfacial wetting behaviour close to a hard wall, the thermal capillary waves at the free interface and the process of droplet coalescence and breakup. These subjects can be studied in a single experiment by combining modern soft matter chemistry and laser scanning confocal microscopy. This combination allows a further exploration of a broad range of interface issues.

References

Aug 19, 2000·Science·M Moseler, U Landman
Nov 23, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·B H ChenM Robert
Aug 23, 2002·Physical Review Letters·Jens Eggers
May 8, 2004·Science·Dirk G A L AartsHenk N W Lekkerkerker
Apr 20, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Milton J RosenYouyi Zhu
Oct 26, 2005·Physical Review Letters·Dirk G A L AartsDaniel Bonn
Dec 15, 2005·The Journal of Chemical Physics·Klaus Mecke, Siegfried Dietrich
Jul 21, 2006·The Journal of Physical Chemistry. B·D G A L Aarts

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Citations

Aug 7, 2008·The Journal of Chemical Physics·Miriam A FreedmanS J Sibener
Oct 1, 2015·Scientific Reports·Thomas E KodgerJoris Sprakel
Sep 23, 2020·The Journal of Physical Chemistry Letters·Mark VisRemco Tuinier

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