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Dissolution of a polyelectrolyte-macroion complex by addition of salt

Skepö, Marie LU and Linse, Per LU (2002) In Physical Review E 66(5).
Abstract
The dissolution of complexes formed by a linear polyelectrolyte and oppositely charged macroions by addition of salt has been examined by employing a simple model with focus on the electrostatic interactions and solved by Monte Carlo simulations. In the absence of salt an overcharged complex appears. Upon addition of salt, the number of complexed macroions is continuously decreasing, the effect being similar for flexible and stiff polyelectrolytes. Regarding the flexible polyelectrolyte, the number of polyelectrolyte-macroion contacts is reduced, whereas it remains nearly constant for the stiff polyelectrolyte as the salt content is increased. A screened Coulomb potential of the Debye-Huckel type, in which the small ions are only... (More)
The dissolution of complexes formed by a linear polyelectrolyte and oppositely charged macroions by addition of salt has been examined by employing a simple model with focus on the electrostatic interactions and solved by Monte Carlo simulations. In the absence of salt an overcharged complex appears. Upon addition of salt, the number of complexed macroions is continuously decreasing, the effect being similar for flexible and stiff polyelectrolytes. Regarding the flexible polyelectrolyte, the number of polyelectrolyte-macroion contacts is reduced, whereas it remains nearly constant for the stiff polyelectrolyte as the salt content is increased. A screened Coulomb potential of the Debye-Huckel type, in which the small ions are only indirectly described, displays a good representation of the system. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review E
volume
66
issue
5
publisher
American Physical Society
external identifiers
  • wos:000179630800064
  • scopus:41349108866
ISSN
1063-651X
DOI
10.1103/PhysRevE.66.051807
language
English
LU publication?
yes
id
424783e4-5384-4c32-aefb-06a198ffe3e3 (old id 322156)
date added to LUP
2007-11-07 18:40:40
date last changed
2017-07-30 04:30:44
@article{424783e4-5384-4c32-aefb-06a198ffe3e3,
  abstract     = {The dissolution of complexes formed by a linear polyelectrolyte and oppositely charged macroions by addition of salt has been examined by employing a simple model with focus on the electrostatic interactions and solved by Monte Carlo simulations. In the absence of salt an overcharged complex appears. Upon addition of salt, the number of complexed macroions is continuously decreasing, the effect being similar for flexible and stiff polyelectrolytes. Regarding the flexible polyelectrolyte, the number of polyelectrolyte-macroion contacts is reduced, whereas it remains nearly constant for the stiff polyelectrolyte as the salt content is increased. A screened Coulomb potential of the Debye-Huckel type, in which the small ions are only indirectly described, displays a good representation of the system.},
  author       = {Skepö, Marie and Linse, Per},
  issn         = {1063-651X},
  language     = {eng},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review E},
  title        = {Dissolution of a polyelectrolyte-macroion complex by addition of salt},
  url          = {http://dx.doi.org/10.1103/PhysRevE.66.051807},
  volume       = {66},
  year         = {2002},
}