Dynamics of Polymers in Flowing Colloidal Suspensions
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Chen-2011-Letters-Dynamics of Polymers in Flowing Colloidal.pdf
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Author(s)
Chen, Hsieh
Alexander-Katz, Alfredo
Date Issued
September 2011
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Chen, Hsieh, and Alfredo Alexander-Katz. “Dynamics of Polymers in Flowing Colloidal Suspensions.” Physical Review Letters 107.12 (2011): n. pag. Web. 27 Jan. 2012. © 2011 American Physical Society
Version
Final published version
Abstract
Using hydrodynamic simulations we examine the behavior of single polymers in a confined colloidal suspension under flow. We study the conformations of both, collapsed and noncollapsed polymers. Our results show that the presence of the colloids has a pronounced effect on the unfolding and refolding cycles of collapsed polymers, but does not have a large effect for noncollapsed polymers. Further inspection of the conformations reveals that the strong flow around the colloids and the direct physical compressions exerted on a globular polymer diffusing in between colloidal shear bands largely facilitate the initiation and unraveling of the globular chains. These results are important for rheological studies of (bio)polymer-(bio)colloid mixtures.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.107.128301
