Title: Extensional flow and relaxation of semi-dilute solutions of schizophyllan
Authors: De Dier, Raf
Mathues, Wouter
Clasen, Christian # ×
Issue Date: 3-Sep-2013
Publisher: Wiley-VCH
Series Title: Macromolecular Materials and Engineering vol:298 issue:9 pages:944-953
Abstract: Capillary thinning experiments of semi-dilute solutions of schizophyllan in water and DMSO are performed to determine the relaxation behavior in extensional flows as experienced, for example, in the flow through porous media in enhanced oil recovery. The extensional relaxation time λE is found to scale with concentration following a dissimilar power-law dependency for the two solvents, λ_E ∝ c^1.52 in water and λE ∝ c0.90 in DMSO. It is shown that the extensional flow fields are strong enough to break, and prevent the rebuilding of, intermolecular structures, due to hydrogen bonding that was observed to alter the viscoelastic response in shearing flows of aqueous schizophyllan solutions
ISSN: 1438-7492
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter, Rheology and Technology Section
× corresponding author
# (joint) last author

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