Planar lamellae and onions: a spatially resolved rheo-NMR approach to the shear-induced structural transformations in a surfactant model system
(2011) In Soft Matter 7(10). p.4938-4947- Abstract
- The shear-induced transformations between oriented planar lamellae and a state of closely packed multilamellar vesicles (MLVs) in a lyotropic nonionic surfactant model system were studied by the combination of nuclear magnetic resonance (NMR) spectroscopy and diffusometry with magnetic resonance imaging (MRI). H-2 NMR imaging confirmed the discontinuous nature of the transition from onions to planar lamellae, revealing the spatial coexistence of both states within the gap of the cylindrical Couette geometry. On the other hand, NMR diffusion measurements in three principal directions and at various values of strain strongly suggest that a multi-lamellar cylindrical or undulated intermediate structure exists during the continuous and... (More)
- The shear-induced transformations between oriented planar lamellae and a state of closely packed multilamellar vesicles (MLVs) in a lyotropic nonionic surfactant model system were studied by the combination of nuclear magnetic resonance (NMR) spectroscopy and diffusometry with magnetic resonance imaging (MRI). H-2 NMR imaging confirmed the discontinuous nature of the transition from onions to planar lamellae, revealing the spatial coexistence of both states within the gap of the cylindrical Couette geometry. On the other hand, NMR diffusion measurements in three principal directions and at various values of strain strongly suggest that a multi-lamellar cylindrical or undulated intermediate structure exists during the continuous and spatially homogeneous transition from planar lamellae to MLVs. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1987086
- author
- Medronho, Bruno LU ; Brown, Jennifer ; Miguel, Maria Graca ; Schmidt, Claudia ; Olsson, Ulf LU and Galvosas, Petrik
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 7
- issue
- 10
- pages
- 4938 - 4947
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000290227400048
- scopus:79955657950
- ISSN
- 1744-6848
- DOI
- 10.1039/c0sm01323d
- language
- English
- LU publication?
- yes
- id
- 82f3f52d-e078-4d6c-9032-79c756c08588 (old id 1987086)
- date added to LUP
- 2016-04-01 14:58:52
- date last changed
- 2022-01-28 03:26:36
@article{82f3f52d-e078-4d6c-9032-79c756c08588, abstract = {{The shear-induced transformations between oriented planar lamellae and a state of closely packed multilamellar vesicles (MLVs) in a lyotropic nonionic surfactant model system were studied by the combination of nuclear magnetic resonance (NMR) spectroscopy and diffusometry with magnetic resonance imaging (MRI). H-2 NMR imaging confirmed the discontinuous nature of the transition from onions to planar lamellae, revealing the spatial coexistence of both states within the gap of the cylindrical Couette geometry. On the other hand, NMR diffusion measurements in three principal directions and at various values of strain strongly suggest that a multi-lamellar cylindrical or undulated intermediate structure exists during the continuous and spatially homogeneous transition from planar lamellae to MLVs.}}, author = {{Medronho, Bruno and Brown, Jennifer and Miguel, Maria Graca and Schmidt, Claudia and Olsson, Ulf and Galvosas, Petrik}}, issn = {{1744-6848}}, language = {{eng}}, number = {{10}}, pages = {{4938--4947}}, publisher = {{Royal Society of Chemistry}}, series = {{Soft Matter}}, title = {{Planar lamellae and onions: a spatially resolved rheo-NMR approach to the shear-induced structural transformations in a surfactant model system}}, url = {{http://dx.doi.org/10.1039/c0sm01323d}}, doi = {{10.1039/c0sm01323d}}, volume = {{7}}, year = {{2011}}, }