ISIS Neutron and Muon Source Data Journal

Probing the viability of water-in-CO2 microemulsions with Headgroup-free amphiphiles

Abstract: Recent SANS studies of an unusual headgroup-free surfactant (Nohead FC6-HC4) produced data that implied the formation of W/CO2 microemulsions (MEs) at a particular pressure (P) and temperature (T). However, at other P and T conditions, or for compounds having different tail lengths, SANS data suggested the formation of either hydrated aggregates (without aqueous cores) or no aggregate formation. With the compound Nohead FC6-HC4 having unusual surfactant architecture, the apparent stabilisation of W/CO2 MEs is a surprising find with a significant potential impact in colloid and interface chemistry. This proposal aims to find an answer to the question “Can CO2-philic compounds without “a headgroup” really stabilize W/CO2 MEs, and if so, how do they work?” This study explores W/CO2 ME formation using “headgroup-free” compounds of various structures over a range of experimental conditions.

Principal Investigator: Professor Masanobu Sagisaka
Experimenter: Professor Azmi Mohamed
Experimenter: Mr Christopher Hill
Experimenter: Professor Julian Eastoe
Experimenter: Dr Adam Czajka
Experimenter: Mr Jonny Pegg
Local Contact: Dr Sarah Rogers
Experimenter: Miss Jocelyn Peach
Experimenter: Dr Gavin Hazell

DOI: 10.5286/ISIS.E.RB1700059

ISIS Experiment Number: RB1700059

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Masanobu Sagisaka et al; (2017): Probing the viability of water-in-CO2 microemulsions with Headgroup-free amphiphiles, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1700059

Data is released under the CC-BY-4.0 license.