Micellisation of alkyltrimethylammonium bromide surfactants in choline chloride:glycerol deep eutectic solvent

DOI: 10.1039/C6CP06053F

Authors: Adrian Sanchez Fernandez (University of Bath; European Spallation Source) , Thomas Arnold (Diamond Light Source) , Andrew J. Jackson (European Spallation Source; Lund University) , Sian L. Fussell (University of Bath) , Richard K Heenan (ISIS Spallation Neutron Source) , Richard Campbell (Institu Laue-Langevin) , Karen J. Edler (University of Bath)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Chemistry Chemical Physics

State: Published (Approved)
Published: November 2016
Diamond Proposal Number(s): 10546

Abstract: Deep eutectic solvents have shown the ability to promote the self-assembly of surfactants in solution. However, some differences have been found compared with self assembly in pure water and other polar organic solvents. The behaviour of alkyltrimethylammonium bromides in choline chloride:glycerol deep eutectic solvent has been studied by means of surface tension, X-Ray and neutron reflectivity and small-angle neutron scattering. The surfactants were found to remain surface active and showed comparable critical micelle concentrations to the same surfactants in water. Our scattering studies demonstrate that these surfactants form globular micelles with ellipsoidal shape in solution. The size, shape and aggregation number of the aggregates were found to vary with the chain length of the surfactant. Specific solvent-headgroup interactions were not found in this system, unlike those we have previously postulated for anionic surfactants in choline chloride deep eutectic solvents.

Subject Areas: Chemistry, Physics


Instruments: I07-Surface & interface diffraction

Other Facilities: SANS2D at ISIS

Added On: 22/11/2016 14:12

Documents:
c6cp06053f.pdf

Discipline Tags:

Surfaces Physics Physical Chemistry Chemistry

Technical Tags:

Diffraction X-ray Reflectivity (XRR)