Issue 8, 2011
From the journal:

Soft Matter

Investigations of vesicle gels by pulsed and modulated gradient NMR diffusion techniques

Samo Lasič,*ab   Ingrid Åslund,a   Claudia Oppel,c   Daniel Topgaard,a   Olle Södermana  and  Michael Gradzielskic  

* Corresponding authors

a Division of Physical Chemistry, Center of Chemistry and Chemical Engineering, Lund University, Lund, Sweden

b Colloidal Resource AB, Kemicentrum, Box 124, Lund, Sweden
E-mail: samo.lasic@fkem1.lu.se
Tel: +46 222 94 80

c Stranski-Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany

Abstract

Vesicle gels are surfactant systems that form stiff gels with rather low amounts of surfactant. So far their structures have mostly been investigated using scattering techniques, which are generally appropriate for the study of structures on the nm-length-scale. Here we examine these gels using two complementary diffusion NMR techniques, which are both sensitive to structures on the μm-scale. The presented results imply structural features on the μm-scale, indicating a more complex structure than just that of densely packed small vesicles, as previously found for these systems. It is demonstrated that a combination of the diffusion NMR methods, described here, can provide useful insights, when morphological features extend over a wide range of length scales.

Graphical abstract: Investigations of vesicle gels by pulsed and modulated gradient NMR diffusion techniques

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Article information

DOI
https://doi.org/10.1039/C0SM01278E
Article type
Paper
Submitted
08 Nov 2010
Accepted
28 Jan 2011
First published
23 Feb 2011

Soft Matter, 2011,7, 3947-3955

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Investigations of vesicle gels by pulsed and modulated gradient NMR diffusion techniques

S. Lasič, I. Åslund, C. Oppel, D. Topgaard, O. Söderman and M. Gradzielski, Soft Matter, 2011, 7, 3947 DOI: 10.1039/C0SM01278E

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