Journal article
Re-entrant swelling and redissolution of polyelectrolytes arises from an increased electrostatic decay length at high salt concentrations
Journal of Colloid and Interface Science, Vol.579, pp.369-378
2020
Abstract
Hypothesis
A detailed understanding of the influence of electrolytes on the conformation of polyelectrolyte chains is an important goal made challenging by the strong coupling between electrostatic interactions and chain conformation. This challenge is particularly evident at moderate to high salt concentrations where mean-field theories of electrolytes are no longer applicable and are therefore unable to predict the interactions between neutral or like charged surfaces that leads to re-entrant swelling of DNA and other polyelectrolytes at high salt concentrations. Recent developments arising from studies of surface forces in ionic liquids that have been extended to include a wide variety of monovalent electrolytes reveal a hitherto unknown increase in the electrostatic decay length at high electrolyte concentrations. We hypothesise that the re-entrant behaviour of polyelectrolytes is driven by an increasing electrostatic decay length with increasing electrolyte concentration.
Experiments
We survey numerous experiments in the literature on re-entrant swelling and calculate the effect of ion pairing on the electrostatic decay length in concentrated electrolytes.
Findings
Re-entrant solubility is driven by an increasing electrostatic decay length at high salt concentrations and is universal across all polyelectrolytes.
Details
- Title
- Re-entrant swelling and redissolution of polyelectrolytes arises from an increased electrostatic decay length at high salt concentrations
- Authors/Creators
- G. Liu (Author/Creator) - University of Science and Technology of ChinaD. Parsons (Author/Creator) - Murdoch UniversityV.S.J. Craig (Author/Creator) - Australian National University
- Publication Details
- Journal of Colloid and Interface Science, Vol.579, pp.369-378
- Publisher
- Academic Press
- Identifiers
- 991005545014807891
- Copyright
- © 2020 Elsevier Inc.
- Murdoch Affiliation
- Chemistry and Physics
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
38 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 2 Chemistry
- 2.53 Polymers & Macromolecules
- 2.53.704 Polymer Dynamics
- Web Of Science research areas
- Chemistry, Physical
- ESI research areas
- Chemistry