Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.158302
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Funding
- National Science Foundation [CBET-1049454, CBET-1049489]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1049489] Funding Source: National Science Foundation
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Flow-induced configuration dynamics and scission of rodlike micelles are studied for the first time using molecular dynamics simulations in the presence of an explicit solvent and salt. Predicted dependence of tumbling frequency and orientation distribution on shear rate S agrees with mesoscopic theories. However, micelle stretching increases the distance between the cationic head groups and adsorbed counterions, which reduces electrostatic screening and increases the overall energy Phi linearly with micelle length. Micelle scission occurs when Phi exceeds a threshold value, independent of S.
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