We present a first time-resolved deuterium NMR study on wormlike micelles under shear. For the investigation, a micellar system made of soybean phosphatidylcholine (lecithin), D2O, and cyclohexane was studied in the concentrated regime, in the vicinity of the isotropic/nematic transition but positioned in the equilibrium isotropic phase. The D2O dispersed in the micellar core was used as a probe to study the relaxation of a shearing-induced nematic phase back to the Isotropie liquid state, after cessation of shear. The whole process was followed through time-resolved deuterium spectra and was characterized by a continuous decrease of the measured quadrupolar splitting, proportional to the nematic order parameter.
|Codice identificativo ISI:||WOS:000185401900002|
|Codice identificativo Scopus:||2-s2.0-0141890874|
|Titolo:||Deuterium NMR Study of Slow Relaxation Dynamics in a Polymer-like Micelles System after Flow-Induced Orientation|
|Appare nelle tipologie:||1.1 Articolo in rivista|