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Phase diagrams come alive: understanding how to create, destroy or change ordered surfactant structures by polymerizing the counterions

Santos, Salome LU ; Piculell, Lennart LU ; Karlsson, Ola LU and Miguel, Maria da Graca (2011) In Soft Matter 7(5). p.1830-1839
Abstract
Free radical polymerization of acrylate counterions to cationic alkyltrimethylammonium surfactant ions was performed in aqueous media. The results of the reactions were either formation, destruction or change of liquid crystalline surfactant structures, depending on the starting conditions such as the surfactant concentration, the content of inert counterions and the monomer-to-initiator ratio. The results were consistent with predictions inferred from equilibrium phase diagrams recently established for aqueous mixtures of the cationic surfactants alkyltrimethylammonium acetate or bromide (C(n)TAAc/Br; n = 12, 16) with the "complex salts'' C(n)TAPA(m), in which the counterions to the surfactant ions were polyacrylate polyions (PAs) of... (More)
Free radical polymerization of acrylate counterions to cationic alkyltrimethylammonium surfactant ions was performed in aqueous media. The results of the reactions were either formation, destruction or change of liquid crystalline surfactant structures, depending on the starting conditions such as the surfactant concentration, the content of inert counterions and the monomer-to-initiator ratio. The results were consistent with predictions inferred from equilibrium phase diagrams recently established for aqueous mixtures of the cationic surfactants alkyltrimethylammonium acetate or bromide (C(n)TAAc/Br; n = 12, 16) with the "complex salts'' C(n)TAPA(m), in which the counterions to the surfactant ions were polyacrylate polyions (PAs) of different degrees of polymerization (m = 25, 30 or 6000). Appropriate pathways, at constant water content, through the latter ternary phase diagrams show what happens, at equilibrium, when monomeric counterions to the surfactant ions are replaced by polymeric counterions. These pathways through the equilibrium phase diagrams thus "come alive'' in the counterion polymerization processes performed here. (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
Soft Matter
volume
7
issue
5
pages
1830 - 1839
publisher
Royal Society of Chemistry
external identifiers
  • wos:000287588800038
  • scopus:79951914560
ISSN
1744-6848
DOI
10.1039/c0sm00958j
language
English
LU publication?
yes
id
725ea601-a247-406c-8f7a-d63863758246 (old id 1869986)
date added to LUP
2011-04-06 11:02:38
date last changed
2017-01-01 06:21:06
@article{725ea601-a247-406c-8f7a-d63863758246,
  abstract     = {Free radical polymerization of acrylate counterions to cationic alkyltrimethylammonium surfactant ions was performed in aqueous media. The results of the reactions were either formation, destruction or change of liquid crystalline surfactant structures, depending on the starting conditions such as the surfactant concentration, the content of inert counterions and the monomer-to-initiator ratio. The results were consistent with predictions inferred from equilibrium phase diagrams recently established for aqueous mixtures of the cationic surfactants alkyltrimethylammonium acetate or bromide (C(n)TAAc/Br; n = 12, 16) with the "complex salts'' C(n)TAPA(m), in which the counterions to the surfactant ions were polyacrylate polyions (PAs) of different degrees of polymerization (m = 25, 30 or 6000). Appropriate pathways, at constant water content, through the latter ternary phase diagrams show what happens, at equilibrium, when monomeric counterions to the surfactant ions are replaced by polymeric counterions. These pathways through the equilibrium phase diagrams thus "come alive'' in the counterion polymerization processes performed here.},
  author       = {Santos, Salome and Piculell, Lennart and Karlsson, Ola and Miguel, Maria da Graca},
  issn         = {1744-6848},
  language     = {eng},
  number       = {5},
  pages        = {1830--1839},
  publisher    = {Royal Society of Chemistry},
  series       = {Soft Matter},
  title        = {Phase diagrams come alive: understanding how to create, destroy or change ordered surfactant structures by polymerizing the counterions},
  url          = {http://dx.doi.org/10.1039/c0sm00958j},
  volume       = {7},
  year         = {2011},
}