Measurement of multilamellar onion dimensions under shear using frequency domain pulsed gradient NMR.

Détails

ID Serval
serval:BIB_23DD1A88EF90
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Measurement of multilamellar onion dimensions under shear using frequency domain pulsed gradient NMR.
Périodique
Journal of Magnetic Resonance
Auteur(s)
Lutti A., Callaghan P.T.
ISSN
1090-7807 (Print)
ISSN-L
1090-7807
Statut éditorial
Publié
Date de publication
2007
Volume
187
Numéro
2
Pages
251-257
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
We present a simple method by which the dimensions of shear-induced multilamellar vesicles (MLVs), also known as onions, can be measured during the shearing process itself. This approach is based on the use of a closely spaced train of magnetic field gradient pulses applied during a CPMG echo sequence. The CPMG train compensates flow effects while the frequency-dependence of apparent diffusion can reveal the onion size. We present here a simple phenomenological model for restricted diffusion in multilamellar vesicles, which may be used to interpret the resulting diffusion spectrum. We demonstrate this approach with MLVs formed from the lamellar phase of sodium dodecyl sulfate (SDS) in water and octanol.
Pubmed
Web of science
Création de la notice
08/07/2013 10:22
Dernière modification de la notice
03/03/2018 14:56
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