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Pickering emulsions responsive to CO₂/N₂ and light dual stimuli at ambient temperature

Jiang, Jianzhong; Ma, Yuxuan; Cui, Zhenggang; Binks, Bernard P.

Authors

Jianzhong Jiang

Yuxuan Ma

Zhenggang Cui



Abstract

A dual stimulus-responsive n-octane-in-water Pickering emulsion with CO₂/N₂ and light triggers is prepared using negatively charged silica nanoparticles in combination with a trace amount of dual switchable surfactant, 4-butyl-4-(4-N,N-dimethylbutoxyamine) azobenzene bicarbonate (AZO-B₄) as stabilizers. On one hand, the emulsion can be transformed between stable and unstable at ambient temperature rapidly via the N₂/CO₂ trigger, and on the other hand a change in droplet size of the emulsion can occur upon light irradiation/re-homogenization cycles without changing the particle/surfactant concentration. The dual responsiveness thus allows for a precise control of emulsion properties. Compared with emulsions stabilised by specially synthesized stimuli-responsive particles or by stimuli-responsive surfactants, the method reported here is much easier and requires relatively low concentration of surfactant (≈1/10 cmc), which is important for potential applications.

Citation

Jiang, J., Ma, Y., Cui, Z., & Binks, B. P. (2016). Pickering emulsions responsive to CO₂/N₂ and light dual stimuli at ambient temperature. Langmuir : the ACS journal of surfaces and colloids, 32(34), 8668-8675. https://doi.org/10.1021/acs.langmuir.6b01475

Journal Article Type Article
Acceptance Date Apr 16, 2016
Online Publication Date Jul 30, 2016
Publication Date Aug 30, 2016
Deposit Date Aug 12, 2016
Publicly Available Date Aug 12, 2016
Journal Langmuir
Print ISSN 0743-7463
Electronic ISSN 1520-5827
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 32
Issue 34
Pages 8668-8675
DOI https://doi.org/10.1021/acs.langmuir.6b01475
Keywords Colloid, Switchable emulsion, Dual stimuli responsive, CO₂/N₂ trigger
Public URL https://hull-repository.worktribe.com/output/442137
Publisher URL http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.6b01475
Copyright Statement ©2017 The University of Hull. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.6b01475
Additional Information This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.6b01475

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Copyright Statement
©2017 The University of Hull. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.6b01475


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Copyright Statement
©2017 The University of Hull. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.6b01475



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