Journal
LANGMUIR
Volume 19, Issue 21, Pages 8709-8714Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la0349370
Keywords
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The formation of multilamellar vesicles (MLVs) from the lamellar phase of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in brine can be controlled by steady, oscillatory shearing. Increasing stress amplitude or decreasing frequency leads to more rapid onion formation. The formation kinetics can be scaled onto constant controlled shear stress experiments; this scaling demonstrates that a minimum strain amplitude of similar to14 that is independent of frequency is required for onion formation. Further, the ratio of deformation driving onion formation to the reversible, elastic deformation can be predicted from the loss tangent. The final size of the MLVs decreases with the stress amplitude, independent of frequency, in quantitative agreement with MLVs formed under steady, applied shear stress.
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