Advanced

Swelling isotherms of surfactant-responsive polymer gels

Piculell, Lennart LU ; Sjöström, Jesper LU and Lynch, Iseult LU (2003) In Progress in Colloid & Polymer Science 122. p.12-103
Abstract
Recent progress in the study of surfactant-responsive polymer gels is reviewed. Polymer gels can be designed that drastically swell or shrink in response to small changes in the concentration of an ionic surfactant in an external bath containing the gel. The gel swelling isotherm, where the equilibrium gel volume is measured as a function of the external surfactant concentration, yields useful information on polymer-surfactant interactions. Associating and nonassociating polymer-surfactant pairs may be distinguished, and critical concentrations for surfactant binding can be determined. Generic swelling isotherms for different classes of systems have been established, which apply to chemically widely different gels (cellulose derivatives,... (More)
Recent progress in the study of surfactant-responsive polymer gels is reviewed. Polymer gels can be designed that drastically swell or shrink in response to small changes in the concentration of an ionic surfactant in an external bath containing the gel. The gel swelling isotherm, where the equilibrium gel volume is measured as a function of the external surfactant concentration, yields useful information on polymer-surfactant interactions. Associating and nonassociating polymer-surfactant pairs may be distinguished, and critical concentrations for surfactant binding can be determined. Generic swelling isotherms for different classes of systems have been established, which apply to chemically widely different gels (cellulose derivatives, vinyl polymers). Hydrophobicity and charge are the essential polymer parameters that determine the featur

s of these isotherms. In order for a surfactant to associate to a nonionic polymer, the polymer hydrophobicity has to exceed a certain threshold. The required threshold hydrophobicity varies with the alkyl chain length, the headgroup, and the counterion of the surfactant. Added salt has large effects on all swelling isotherms. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Progress in Colloid & Polymer Science
volume
122
pages
12 - 103
publisher
Springer
external identifiers
  • scopus:0037259495
ISSN
0340-255X
DOI
10.1007/b10531
language
English
LU publication?
yes
id
282062e8-cbe8-4ffb-abf4-bbfeb8d454c1 (old id 122157)
date added to LUP
2007-07-12 10:24:49
date last changed
2018-01-07 08:48:19
@article{282062e8-cbe8-4ffb-abf4-bbfeb8d454c1,
  abstract     = {Recent progress in the study of surfactant-responsive polymer gels is reviewed. Polymer gels can be designed that drastically swell or shrink in response to small changes in the concentration of an ionic surfactant in an external bath containing the gel. The gel swelling isotherm, where the equilibrium gel volume is measured as a function of the external surfactant concentration, yields useful information on polymer-surfactant interactions. Associating and nonassociating polymer-surfactant pairs may be distinguished, and critical concentrations for surfactant binding can be determined. Generic swelling isotherms for different classes of systems have been established, which apply to chemically widely different gels (cellulose derivatives, vinyl polymers). Hydrophobicity and charge are the essential polymer parameters that determine the featur<br/><br>
s of these isotherms. In order for a surfactant to associate to a nonionic polymer, the polymer hydrophobicity has to exceed a certain threshold. The required threshold hydrophobicity varies with the alkyl chain length, the headgroup, and the counterion of the surfactant. Added salt has large effects on all swelling isotherms.},
  author       = {Piculell, Lennart and Sjöström, Jesper and Lynch, Iseult},
  issn         = {0340-255X},
  language     = {eng},
  pages        = {12--103},
  publisher    = {Springer},
  series       = {Progress in Colloid & Polymer Science},
  title        = {Swelling isotherms of surfactant-responsive polymer gels},
  url          = {http://dx.doi.org/10.1007/b10531},
  volume       = {122},
  year         = {2003},
}