Emulsification of Partially Miscible Liquids Using Colloidal Particles :  Nonspherical and Extended Domain Structures

Title data

Clegg, Paul S. ; Herzig, Eva M. ; Schofield, Andrew B. ; Egelhaaf, Stefan U. ; Horozov, Tommy S. ; Binks, Bernard P. ; Cates, Michael E. ; Poon, Wilson C. K.:
Emulsification of Partially Miscible Liquids Using Colloidal Particles :  Nonspherical and Extended Domain Structures.
In: Langmuir. Vol. 23 (2007) Issue 11 . - pp. 5984-5994.
ISSN 1520-5827
DOI: https://doi.org/10.1021/la063707t

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Abstract in another language

We present microscopy studies of particle-stabilized emulsions with unconventional morphologies. The emulsions comprise pairs of partially miscible fluids and are stabilized by colloids. Alcohol−oil mixtures are employed; silica colloids are chemically modified so that they have partial wettability. We create our morphologies by two distinct routes:  starting with a conventional colloid-stabilized emulsion or starting in the single-fluid phase with the colloids dispersed. In the first case temperature cycling leads to the creation of extended fluid domains built around some of the initial fluid droplets. In the second case quenching into the demixed region leads to the formation of domains which reflect the demixing kinetics. The structures are stable due to a jammed, semisolid, multilayer of colloids on the liquid−liquid interface. The differing morphologies reflect the roles in formation of the arrested state of heterogeneous and homogeneous nucleation and spinodal decomposition. The latter results in metastable, bicontinuous emulsions with frozen interfaces, at least for the thin-slab samples, investigated here.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation - Juniorprof. Dr. Eva M. Herzig Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation
Result of work at the UBT:	No
DDC Subjects:	500 Science > 530 Physics
Date Deposited:	06 Oct 2017 09:54
Last Modified:	20 Oct 2022 10:58
URI:	https://eref.uni-bayreuth.de/id/eprint/39920