Size Determination of Shear-Induced Multilamellar Vesicles by Rheo-NMR Spectroscopy
(2010) In Langmuir 26(3). p.1477-1481- Abstract
- A model for analyzing the deuterium (H-2) NMR line shapes of D2O ill surfactant multilamellar vesicle (MLV, "onion") systems is proposed. The assumption of the slow exchange of water molecules between adjacent layers implies that the H-2 NMR line shape is simply given by a SLIM of Lorentzians if the condition of motional narrowing is also fulfilled. Using the classical two-step model for the NMR relaxation in structure fluids allows Lis to calculate how the NMR line shape depends oil the MLV size. The model is tested oil two different MLV systems for which the NMR line shapes are measured as a function of the applied shear rate using rheo-NMR. The MLV sizes obtained are in good agreement with previous data from rheo-small-angle light... (More)
- A model for analyzing the deuterium (H-2) NMR line shapes of D2O ill surfactant multilamellar vesicle (MLV, "onion") systems is proposed. The assumption of the slow exchange of water molecules between adjacent layers implies that the H-2 NMR line shape is simply given by a SLIM of Lorentzians if the condition of motional narrowing is also fulfilled. Using the classical two-step model for the NMR relaxation in structure fluids allows Lis to calculate how the NMR line shape depends oil the MLV size. The model is tested oil two different MLV systems for which the NMR line shapes are measured as a function of the applied shear rate using rheo-NMR. The MLV sizes obtained are in good agreement with previous data from rheo-small-angle light scattering. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1547249
- author
- Medronho, Bruno LU ; Schmidt, C. ; Olsson, Ulf LU and Miguel, M. G.
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Langmuir
- volume
- 26
- issue
- 3
- pages
- 1477 - 1481
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000273831700020
- scopus:75749119370
- pmid:20099913
- ISSN
- 0743-7463
- DOI
- 10.1021/la903682p
- language
- English
- LU publication?
- yes
- id
- 2c11f979-8839-4e17-8f91-901d01554e87 (old id 1547249)
- date added to LUP
- 2016-04-01 10:55:50
- date last changed
- 2022-01-26 03:46:03
@article{2c11f979-8839-4e17-8f91-901d01554e87, abstract = {{A model for analyzing the deuterium (H-2) NMR line shapes of D2O ill surfactant multilamellar vesicle (MLV, "onion") systems is proposed. The assumption of the slow exchange of water molecules between adjacent layers implies that the H-2 NMR line shape is simply given by a SLIM of Lorentzians if the condition of motional narrowing is also fulfilled. Using the classical two-step model for the NMR relaxation in structure fluids allows Lis to calculate how the NMR line shape depends oil the MLV size. The model is tested oil two different MLV systems for which the NMR line shapes are measured as a function of the applied shear rate using rheo-NMR. The MLV sizes obtained are in good agreement with previous data from rheo-small-angle light scattering.}}, author = {{Medronho, Bruno and Schmidt, C. and Olsson, Ulf and Miguel, M. G.}}, issn = {{0743-7463}}, language = {{eng}}, number = {{3}}, pages = {{1477--1481}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Langmuir}}, title = {{Size Determination of Shear-Induced Multilamellar Vesicles by Rheo-NMR Spectroscopy}}, url = {{http://dx.doi.org/10.1021/la903682p}}, doi = {{10.1021/la903682p}}, volume = {{26}}, year = {{2010}}, }