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Issue 25, 2010
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Fabrication of large volume, macroscopically defined and responsive engineered emulsions using a homogeneous pH-trigger

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Abstract

Hydrolysis of glucono-δ-lactone (GδL) 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 GδL 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.

Graphical abstract: Fabrication of large volume, macroscopically defined and responsive engineered emulsions using a homogeneous pH-trigger

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Publication details

The article was received on 25 Mar 2010, accepted on 12 Apr 2010 and first published on 18 May 2010


Article type: Paper
DOI: 10.1039/C0JM00836B
Citation: J. Mater. Chem., 2010,20, 5228-5234

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    Fabrication of large volume, macroscopically defined and responsive engineered emulsions using a homogeneous pH-trigger

    R. T. Woodward, L. Chen, D. J. Adams and J. V. M. Weaver, J. Mater. Chem., 2010, 20, 5228
    DOI: 10.1039/C0JM00836B

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