Non-aqueous Isorefractive Pickering Emulsions

Condensed Matter journal club

Non-aqueous Isorefractive Pickering Emulsions

  • Event time: 11:30am
  • Event date: 1st May 2015
  • Speaker: (School of Physics & Astronomy, University of Edinburgh)
  • Location: Room 2511,

Event details

Abstract

Non-aqueous Pickering emulsions of 16-240µm diameter have been prepared using diblock copolymer worms with ethylene glycol as the droplet phase and an n-alkane as the continuous phase. Initial studies using n-dodecane resulted in stable emulsions that were significantly less turbid than conventional water-in-oil emulsions. This is attributed to the rather similar refractive indices of the latter two phases. By utilizing ntetradecane as an alternative oil that almost precisely matches the refractive index of ethylene glycol, almost isorefractive ethylene glycol-in-n-tetradecane Pickering emulsions can be prepared. The droplet diameter and transparency of such emulsions can be systematically varied by adjusting the worm copolymer concentration.
Langmuir 31 4373-4376 (2015)
pdf version

Authors

Kate L. Thompson, Jacob A. Lane, Matthew J. Derry, Steven P. Armes