UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Spontaneous emulsification induced by nanoparticle surfactants

Hasnain, J; Jiang, Y; Hou, H; Yan, J; Athanasopoulou, L; Forth, J; Ashby, PD; ... Geissler, PL; + view all (2020) Spontaneous emulsification induced by nanoparticle surfactants. Journal of Chemical Physics , 153 (22) , Article 224705. 10.1063/5.0029016. Green open access

[thumbnail of 5.0029016.pdf]
Preview
Text
5.0029016.pdf - Published Version

Download (1MB) | Preview

Abstract

Microemulsions, mixtures of oil, water, and surfactant, are thermodynamically stable. Unlike conventional emulsions, microemulsions form spontaneously, have a monodisperse droplet size that can be controlled by adjusting the surfactant concentration, and do not degrade with time. To make microemulsions, a judicious choice of surfactant molecules must be made, which significantly limits their potential use. Nanoparticle surfactants, on the other hand, are a promising alternative because the surface chemistry needed to make them bind to a liquid-liquid interface is both well flexible and understood. Here, we derive a thermodynamic model predicting the conditions in which nanoparticle surfactants drive spontaneous emulsification that agrees quantitatively with experiments using Noria nanoparticles. This new class of microemulsions inherits the mechanical, chemical, and optical properties of the nanoparticles used to form them, leading to novel applications.

Type: Article
Title: Spontaneous emulsification induced by nanoparticle surfactants
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/5.0029016
Publisher version: https://doi.org/10.1063/5.0029016
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10118252
Downloads since deposit
98Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item