NMR Studies of Nonionic Surfactants
Journal article, 2013
NMR has contributed greatly to our current understanding of self-association, phase behaviour, and molecular dynamics in aqueous systems of oligo(ethylene oxide) mono-alkyl ether (CmEn) nonionic surfactants, which are extensively used in both basic scientific studies and technical applications as emulsifying agents and detergents. This review provides a comprehensive but concise overview of the various NMR techniques that have been applied to nonionic surfactants. We describe conventional experimental procedures, such as the measurement of quadrupole splittings, nuclear relaxation times, and self-diffusion coefficients to characterize liquid crystalline phases, micelles, and microemulsions, as well as more advanced imaging and diffusion-diffusion 2D correlation approaches to investigate the structure of phase-separated systems and the spatial organization of anisotropic liquid crystalline domains on the micro- to millimetre length scales.
Detergent
lyotropic
Nuclear magnetic resonance
homogeneous length-scale
induced multilamellar vesicles
Relaxation
curvature elastic properties
Molecular dynamics
nuclear-magnetic-resonance
liquid-crystal
glycol dodecyl ether
water self-diffusion
Translation
oil chain-length
tensor imaging mathematics
Self-diffusion
molecular-weight distributions
Author
T. M. Ferreira
Diana Bernin
University of Gothenburg
D. Topgaard
Annual Reports on NMR Spectroscopy
0066-4103 (ISSN)
Vol. 79 73-127Subject Categories
Physical Sciences
DOI
10.1016/b978-0-12-408098-0.00003-3