Print Email Facebook Twitter Polymer conformation during flow in porous media Title Polymer conformation during flow in porous media Author Kawale, D. (TU Delft Reservoir Engineering; Dutch Polymer Institute) Bouwman, G.W. (TU Delft ChemE/Chemical Engineering) Sachdev, S. (TU Delft ChemE/Product and Process Engineering) Zitha, P.L.J. (TU Delft Reservoir Engineering) Kreutzer, M.T. (TU Delft ChemE/Chemical Engineering) Rossen, W.R. (TU Delft Reservoir Engineering) Boukany, P. (TU Delft ChemE/Product and Process Engineering) Department ChemE/Chemical Engineering Date 2017-10 Abstract Molecular conformations of individual polymers during flow through porous media are directly observed by single-DNA imaging in microfluidics. As the Weissenberg number increases during flow (Wi > 1), we observe two types of elastic instabilities: (a) stationary dead-zone and (b) time-dependant dead-zone washing. When stretched polymer chains enter a dead-zone, they first re-coil and, once inside the dead-zone, they rotate and re-stretch again. The probability distribution of DNA chains under the stretched condition inside the dead-zone is found to be heterogeneous with a broad distribution. To reference this document use: http://resolver.tudelft.nl/uuid:05d2bd16-ff1c-4e6d-96ef-f42eb1c0ac21 DOI https://doi.org/10.1039/C7SM00817A ISSN 1744-683X Source Soft Matter, 13 (46), 8745-8755 Part of collection Institutional Repository Document type journal article Rights © 2017 D. Kawale, G.W. Bouwman, S. Sachdev, P.L.J. Zitha, M.T. Kreutzer, W.R. Rossen, P. Boukany Files PDF c7sm00817a.pdf 3.29 MB Close viewer /islandora/object/uuid:05d2bd16-ff1c-4e6d-96ef-f42eb1c0ac21/datastream/OBJ/view