Rheo-NMR phenomena of wormlike micelles

Soft Matter
M R López-GonzálezPaul T Callaghan

Abstract

Using a combination of rheology and nuclear magnetic resonance (NMR) spectroscopy/velocimetry we demonstrate the existence of shear banding fluctuations under Couette flow of the micellar system 10% w/v cetylpyridinium chloride and sodium salicylate (CPyCl-NaSal) molar ratio 2 : 1 in 0.5 M NaCl in either HO or HO, using both time-averaged and real-time measurements. These shear banding fluctuations are consistent not only with the shear stress fluctuations observed in rheological measurements but also with fluctuations in the change of the constrained fraction of the amphiphile chain (Δ) observed in H-NMR spectroscopy experiments. Using H-NMR spectroscopy on a deuterated probe molecule (-decane) located in the wormlike micellar interior, direct measurement of the shear-induced nematic phase transition is reported.

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Citations

Jun 17, 2008·Applied and Environmental Microbiology·V R Phoenix, W M Holmes
Sep 25, 2012·The European Physical Journal. E, Soft Matter·M-A Fardin, S Lerouge
Apr 10, 2015·Magnetic Resonance in Chemistry : MRC·Volker RäntzschGisela Guthausen
Sep 30, 2017·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·María R SerialRodolfo H Acosta
Jul 16, 2008·Soft Matter·J SprakelJ van der Gucht
Aug 7, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Lydiane BécuAnnie Colin
Jan 20, 2018·Physical Review. E·Subas Dhakal, Radhakrishna Sureshkumar
Mar 19, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Samuel W HolderHadi Mohammadigoushki
Mar 14, 2021·Journal of Magnetic Resonance·Haitham F I Al-MubarakWilliam M Holmes
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Panos J PhotinosPaul T Callaghan
Jun 11, 2021·Physical Review Letters·Michael C BurroughsMatthew E Helgeson

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