Hauptseminar Porous Media SS 2021/Polyelectrolyte gels

Date

2021-07-16

Time

14:30

Topic

Using polyelectrolyte gels for desalination

Speaker

Fabio Oelschläger

Tutor

David Beyer

Contents

In this talk polyelectrolyte gels will be presented which offer many applications, such as super absorbers in baby diapers, viscosity modifiers in food industry, soft contact lenses, and they can also be used as desalination agents. After a short overview of what polyelectrolytes are, one should discuss how one can model them with coarse-grained MD, and what kind of theories exist to describe their swelling. After a discussion of a suitable theory a theoretical mode for discussing the efficiency of desalination in practical applications will be presented.

Literature

• Christian Holm, Kurt Kremer, Thomas A. Vilgis.
  Polyelektrolyte: Grundlegende Probleme bei der Beschreibung weitverbreiteter Substanzen.
  Physikalische Blätter 54(11):1013–1016, 1998.
  [PDF] (1.7 MB) [DOI]
• Peter Košovan, Tobias Richter, Christian Holm.
  Molecular Simulations of Hydrogels.
  In Intelligent Hydrogels, pages 205–221. Edited by Gabriele Sadowski, Walter Richtering. Part of Progress in Colloid and Polymer Science, volume 140.
  Springer International Publishing, 2013. ISBN: 978-3-319-01682-5.
  [PDF] (650 KB) [DOI]
• Johannes Höpfner, Tobias Richter, Peter Košovan, Christian Holm, Manfred Wilhelm.
  Seawater Desalination via Hydrogels: Practical Realisation and First Coarse Grained Simulations.
  In Intelligent Hydrogels, pages 247–263. Edited by Gabriele Sadowski, Walter Richtering. Part of Progress in Colloid and Polymer Science, volume 140.
  Springer International Publishing, 2013. ISBN: 978-3-319-01682-5.
  [PDF] (1.0 MB) [DOI]
• Peter Košovan, Tobias Richter, Christian Holm.
  Modeling of Polyelectrolyte Gels in Equilibrium with Salt Solutions.
  Macromolecules 48(20):7698–7708, 2015.
  [PDF] (2.5 MB) [DOI]
• Tobias Richter, Jonas Landsgesell, Peter Košovan, Christian Holm.
  On the efficiency of a hydrogel-based desalination cycle.
  Desalination 414:28–34, 2017.
  [PDF] (1.1 MB) [DOI]
• Lukas Arens, Dennis Barther, Jonas Landsgesell, Christian Holm , Manfred Wilhelm.
  Poly(sodium acrylate) hydrogels: synthesis of various network architectures, local molecular dynamics, salt partitioning, desalination and simulation.
  Soft Matter 15(48):9949–9964, 2019.
  [PDF] (5.1 MB) [DOI]