Ion-ion correlations in liquid dispersions

Summary, in English

Ion-ion correlations play an important role in liquid dispersion with, strong eleetrostatic inlet-actions. Examples can be found in very diverse areas with the setting of cement paste as one extreme and the compactation, of DNA as another. One particularly spectacular effect of ion-ion correlations is that the traditional double layer repulsion sometimes can be converted into a net attraction. This typically takes place in the presence of multivalent counterions and/or in solutions with low dielectric permittivity. The attractive forces are driven by the energy while the repulsive are mainly of entropic origin, and the final outcome is a delicate balance of these contributions. Here we present two simple models, which give a conceptually simple description of this balance.

• Author: Bo Jönsson; Håkan Wennerström
• Department/s: Computational Chemistry; Physical Chemistry
• Publishing year: 2004
• Language: English
• Pages: 339-364
• Publication/Series: Journal of Adhesion
• Volume: 80
• Issue: 5
• Links: http://dx.doi.org/10.1080/00218460490465551
• Document type: Journal article
• Publisher: Taylor & Francis
• Topic: Physical Chemistry (including Surface- and Colloid Chemistry); Theoretical Chemistry (including Computational Chemistry)
• Status: Published
• ISBN/ISSN/Other: ISSN: 0021-8464