We extend the single-chain slip-spring model developed by Likhtman [Macromolecules 38, 6128 (2005)] to describe the dynamics and rheology of entangled polymers to wormlike micellar solutions by incorporating chain breakage and rejoining, which are the key additional dynamics present in wormlike micellar solutions. We show that the linear rheological properties obtained from this micelle slip-spring model are in good agreement with mesoscopic simulations using the “pointer algorithm” [W. Zou and R. G. Larson, J. Rheol. 58, 681 (2014)] and can be fit to experimental results after an adjustment to correct for the too-high flexibility of the micelles assumed in the slip-spring model. Finally, we use this model to predict the nonlinear rheological properties of entangled wormlike micelles, which are the first predictions that include the effects of entanglements, breakage and rejoining, Rouse modes, and stretch of bead-spring micellar chains with Hookean springs.
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September 2020
Research Article|
September 01 2020
A slip-spring simulation model for predicting linear and nonlinear rheology of entangled wormlike micellar solutions
Takeshi Sato;
Takeshi Sato
1
Institute for Chemical Research, Kyoto University
, Uji 611-0011, Japan
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Soroush Moghadam;
Soroush Moghadam
2
Department of Mechanical Engineering, University of Michigan
, Ann Arbor, Michigan 48109
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Grace Tan;
Grace Tan
3
Department of Chemical Engineering, University of Michigan
, Ann Arbor, Michigan 48109
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Ronald G. Larson
Ronald G. Larson
a)
3
Department of Chemical Engineering, University of Michigan
, Ann Arbor, Michigan 48109a)Author to whom correspondence should be addressed; electronic mail: rlarson@umich.edu
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a)Author to whom correspondence should be addressed; electronic mail: rlarson@umich.edu
J. Rheol. 64, 1045–1061 (2020)
Article history
Received:
April 25 2020
Accepted:
July 06 2020
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Citation
Takeshi Sato, Soroush Moghadam, Grace Tan, Ronald G. Larson; A slip-spring simulation model for predicting linear and nonlinear rheology of entangled wormlike micellar solutions. J. Rheol. 1 September 2020; 64 (5): 1045–1061. https://doi.org/10.1122/8.0000062
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