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Title: Driven transport of dilute polymer solutions through porous media comprising interconnected cavities
Authors: Nagarajan, Karthik
Chen, Shing Bor 
Keywords: Dissipative particle dynamics
Driven transport
Porous media
Issue Date: 8-Apr-2021
Publisher: MDPI AG
Citation: Nagarajan, Karthik, Chen, Shing Bor (2021-04-08). Driven transport of dilute polymer solutions through porous media comprising interconnected cavities. Colloids and Interfaces 5 (2) : 22. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Driven transport of dilute polymer solutions through porous media has been simulated using a recently proposed novel dissipative particle dynamics method satisfying the no-penetration and no-slip boundary conditions. The porous media is an array of overlapping spherical cavities arranged in a simple cubic lattice. Simulations were performed for linear, ring, and star polymers with 12 arms for two cases with the external force acting on (I) both polymer and solvent beads to model a pressure-driven flow; (II) polymer beads only, similar to electrophoresis. When the external force is in the direction of a principal axis, the extent of change in the polymers’ conformation and their alignment with the driving force is more significant for case I. These effects are most pronounced for linear chains, followed by rings and stars at the same molecular weight. Moreover, the polymer mean velocity is affected by its molecular weight and architecture as well as the direction and strength of the imposed force. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Colloids and Interfaces
ISSN: 2504-5377
DOI: 10.3390/colloids5020022
Rights: Attribution 4.0 International
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