Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/7271
Título: Size determination of shear-induced multilamellar vesicles by Rheo-NMR spectroscopy
Autor: Medronho, B.
Schmidt, C.
Olsson, U.
Miguel, M. G.
Data: 2010
Editora: American Chemical Society
Resumo: A model for analyzing the deuterium ((2)H) NMR line shapes of D(2)O ill surfactant multilamellar vesicle (MLV, "onion") systems is proposed. The assumption of the slow exchange of water molecules between adjacent layers implies that the (2)H 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.
Peer review: yes
URI: http://hdl.handle.net/10400.1/7271
DOI: https://dx.doi.org/10.1021/la903682p
ISSN: 0743-7463
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)



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