K. A. White
Influence of particle composition and thermal cycling on bijel formation
White, K. A.; Schofield, A. B.; Binks, B. P.; Clegg, P. S.
Authors
A. B. Schofield
Professor Bernie Binks B.P.Binks@hull.ac.uk
Emeritus Professor of Physical Chemistry
P. S. Clegg
Abstract
Colloidal particles with appropriate wetting properties can become very strongly trapped at an interface between two immiscible fluids. We have harnessed this phenomenon to create a new class of soft materials with intriguing and potentially useful characteristics. The material is known as a bijel: bicontinuous interfacially-jammed emulsion gel. It is a colloid-stabilized emulsion with fluid-bicontinuous domains. The potential to create these gels was first predicted using computer simulations. Experimentally we use mixtures of water and 2,6-lutidine at the composition for which the system undergoes a critical demixing transition on warming. Colloidal silica, with appropriate surface chemistry, is dispersed while the system is in the single-fluid phase; the composite sample is then slowly warmed well beyond the critical temperature. The liquids phase separate via spinodal decomposition and the particles become swept up on the newly created interfaces. As the domains coarsen the interfacial area decreases and the particles eventually become jammed together. The resulting structures have a significant yield stress and are stable for many months. Here we begin to explore the complex wetting properties of fluorescently tagged silica surfaces in water-lutidine mixtures, showing how they can be tuned to allow bijel creation. Additionally we demonstrate how the particle properties change with time while they are immersed in the solvents.
Citation
White, K. A., Schofield, A. B., Binks, B. P., & Clegg, P. S. (2008). Influence of particle composition and thermal cycling on bijel formation. Journal of Physics: Condensed Matter, 20(49), Article ARTN 494223. https://doi.org/10.1088/0953-8984/20/49/494223
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 1, 2008 |
Online Publication Date | Nov 12, 2008 |
Publication Date | Dec 10, 2008 |
Journal | JOURNAL OF PHYSICS-CONDENSED MATTER |
Print ISSN | 0953-8984 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 20 |
Issue | 49 |
Article Number | ARTN 494223 |
DOI | https://doi.org/10.1088/0953-8984/20/49/494223 |
Keywords | General Materials Science; Condensed Matter Physics |
Public URL | https://hull-repository.worktribe.com/output/387127 |
Publisher URL | http://iopscience.iop.org/article/10.1088/0953-8984/20/49/494223/meta |
You might also like
Competition between hydrogen bonding and electrostatic repulsion in pH-switchable emulsions
(2023)
Journal Article
Highly efficient and recyclable monolithic bioreactor for interfacial enzyme catalysis
(2023)
Journal Article
Downloadable Citations
About Repository@Hull
Administrator e-mail: repository@hull.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search