Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 20, Issue 25, Pages 5228-5234Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm00836b
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Funding
- EPSRC [EP/G012741/1]
- Engineering and Physical Sciences Research Council [EP/G012741/1] Funding Source: researchfish
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Hydrolysis of glucono-delta-lactone (G delta L) lowers the pH homogeneously throughout an aqueous solution. We exploit this non-invasive pH-trigger to prepare significant volumes of kinetically trapped, functional and responsive emulsion droplet assemblies-engineered emulsions-from highly stable polymer-functionalized emulsion droplets. In contrast to conventional acidification strategies, such as the addition of concentrated acid solutions, this approach also allows the kinetics of engineered emulsion formation to be monitored by rheometry thus providing valuable insight into the formation process. Engineered emulsions with enhanced morphological and compositional complexity can be prepared using G delta L while maintaining reversibility-that is, the assembled droplets can be rapidly disassembled into free-flowing emulsion dispersions without compromising the droplet integrity. These developments may facilitate the broad exploitation of this generic new encapsulation and reversible assembly technology.
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