NDLI: The role of responsive branched copolymer composition in controlling pH-triggered aggregation of “engineered” emulsion droplets: towards selective droplet assembly

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Polymer Chemistry Vol -1

The role of responsive branched copolymer composition in controlling pH-triggered aggregation of “engineered” emulsion droplets: towards selective droplet assembly

Content Provider	Royal Society of Chemistry (RSC)
Author	Weaver, Jonathan V. M. Woodward, Robert T.
Copyright Year	2011
Abstract	Stable polymer-functionalized oil-in-water emulsion droplets are prepared with precise surface compositions, which are defined by that of the branched copolymer surfactant. The influence of composition, specifically ratios of methacrylic acid (MA) to ethylene glycol (EG), on acid-triggered inter-polymer/inter-droplet hydrogen-bonding events is studied. It is demonstrated that simple variation of the EG : MA ratio can: (i) control the kinetics of, and thereby switch “on and off”, inter-droplet interactions, and (ii) control the stiffness and mechanical integrity of aggregated “engineered emulsions” under shear. We exemplify these points by demonstrating selective acid-triggered assembly of binary mixtures of contra-functionalized emulsion droplets. It is postulated that these results will allow fine-tuning of complex assembled engineered emulsion systems with the principles developed being applicable to other disperse systems (i.e., colloids and nanoparticles) and surfaces (i.e., for reversible adhesion).
Starting Page	403
Ending Page	410
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	2
Issue Number	2
Journal	Polymer Chemistry
DOI	10.1039/c0py00277a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ethylene glycol Emulsion Carboxylic acid Stiffness Copolymer Surfactant Master's degree
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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