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Formation of polyelectrolyte-surfactant complexes on surfaces

Nylander, Tommy LU ; Samoshina, Yulia LU and Lindman, Björn LU (2006) In Advances in Colloid and Interface Science 123-126. p.105-123
Abstract
The interfacial behavior of polyelectrolytes, mainly cationic with varying content of amphiphilic groups, and their complexes with oppositely charged surfactant are discussed. Both the kinetics and the reversibility aspect of the adsorption are considered. The structure of adsorbed layer formed was found to be dependent not only on the bulk solution phase behavior, but also on the pre-applied conditions, i.e., the path used to obtain a particular solution condition (e.g., by changing pH and concentration of salt, surfactant or polymer). Polyelectrolyte adsorption appears only partly reversible, due to its high affinity to the surface, which slows down the adsorption process. In general, relaxation occurs more easily if the direction of the... (More)
The interfacial behavior of polyelectrolytes, mainly cationic with varying content of amphiphilic groups, and their complexes with oppositely charged surfactant are discussed. Both the kinetics and the reversibility aspect of the adsorption are considered. The structure of adsorbed layer formed was found to be dependent not only on the bulk solution phase behavior, but also on the pre-applied conditions, i.e., the path used to obtain a particular solution condition (e.g., by changing pH and concentration of salt, surfactant or polymer). Polyelectrolyte adsorption appears only partly reversible, due to its high affinity to the surface, which slows down the adsorption process. In general, relaxation occurs more easily if the direction of the process is from low to high surface coverage. Association of the surfactant with the polymer, which depends on the surfactant concentration, can completely alter the interfacial behavior. Maximum adsorption occurs generally at a surfactant concentration just before the expected phase separation region, while the complex in some cases could desorb from the surface at high enough surfactant concentration (above the cmc). Different results were obtained for coadsorption of amphiphilic polyelectrolytes when surfactant was added to the preadsorbed polymer layers and when complexes were pre-formed in the solution prior to exposing the surface to the polymer-surfactant solution. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
coacervation, reversibility of polymer adsorption, kinetics of polymer adsorption, polyelectrolyte adsorption, polyelectrolyte-surfactant interaction
in
Advances in Colloid and Interface Science
volume
123-126
pages
105 - 123
publisher
Elsevier
external identifiers
  • wos:000242597700009
  • scopus:33750497247
ISSN
1873-3727
DOI
10.1016/j.cis.2006.07.005
language
English
LU publication?
yes
id
bf298e8c-0941-4e32-b476-0c81ec8e5da4 (old id 683530)
date added to LUP
2016-04-01 16:22:44
date last changed
2021-09-29 01:12:30
@article{bf298e8c-0941-4e32-b476-0c81ec8e5da4,
  abstract     = {The interfacial behavior of polyelectrolytes, mainly cationic with varying content of amphiphilic groups, and their complexes with oppositely charged surfactant are discussed. Both the kinetics and the reversibility aspect of the adsorption are considered. The structure of adsorbed layer formed was found to be dependent not only on the bulk solution phase behavior, but also on the pre-applied conditions, i.e., the path used to obtain a particular solution condition (e.g., by changing pH and concentration of salt, surfactant or polymer). Polyelectrolyte adsorption appears only partly reversible, due to its high affinity to the surface, which slows down the adsorption process. In general, relaxation occurs more easily if the direction of the process is from low to high surface coverage. Association of the surfactant with the polymer, which depends on the surfactant concentration, can completely alter the interfacial behavior. Maximum adsorption occurs generally at a surfactant concentration just before the expected phase separation region, while the complex in some cases could desorb from the surface at high enough surfactant concentration (above the cmc). Different results were obtained for coadsorption of amphiphilic polyelectrolytes when surfactant was added to the preadsorbed polymer layers and when complexes were pre-formed in the solution prior to exposing the surface to the polymer-surfactant solution.},
  author       = {Nylander, Tommy and Samoshina, Yulia and Lindman, Björn},
  issn         = {1873-3727},
  language     = {eng},
  pages        = {105--123},
  publisher    = {Elsevier},
  series       = {Advances in Colloid and Interface Science},
  title        = {Formation of polyelectrolyte-surfactant complexes on surfaces},
  url          = {http://dx.doi.org/10.1016/j.cis.2006.07.005},
  doi          = {10.1016/j.cis.2006.07.005},
  volume       = {123-126},
  year         = {2006},
}