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Ethyl(hydroxyethyl)cellulose-sodium dodecanoate interaction investigated by surface tension and electrical conductivity techniques

Bo, A D; Schweitzer, B; Felippe, A C; Zanette, D and Lindman, Björn LU (2005) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 256(2-3). p.171-180
Abstract
Mixtures of ethyl (hydroxyethyl)cellulose (EHEC) and sodium dodecanoate (SDoD) were investigated using surface tension, conductivity and transmittance measurements. The parameters of the surfactant to polymer association processes such as the critical aggregation concentration (cac) and saturation of the polymer by SDoD (psp) were determined from the plots of surface tension and specific conductivity versus surfactant concentration. The transmittance versus [SDoD] profiles exhibited bands that, in conjunction with conductivity and surface tension data, gave support to the explanation of the behavior of EHEC-SDoD-water solutions. Transmittance bands determined in the presence of EHEC and surfactant are sensitive to the process of surfactant... (More)
Mixtures of ethyl (hydroxyethyl)cellulose (EHEC) and sodium dodecanoate (SDoD) were investigated using surface tension, conductivity and transmittance measurements. The parameters of the surfactant to polymer association processes such as the critical aggregation concentration (cac) and saturation of the polymer by SDoD (psp) were determined from the plots of surface tension and specific conductivity versus surfactant concentration. The transmittance versus [SDoD] profiles exhibited bands that, in conjunction with conductivity and surface tension data, gave support to the explanation of the behavior of EHEC-SDoD-water solutions. Transmittance bands determined in the presence of EHEC and surfactant are sensitive to the process of surfactant to polymer binding. In this process, a discontinuity point represented by a second broader peak in the transmittance plots was identified, implying a slight inhibition of the breakdown of the network process. This is explained as a kind of intermediate re-structural network of the complexes produced by the formation of regular SDoD micelles. It was demonstrated that the second conductivity breakpoint marks the polymer saturation by surfactant clusters, and the effect of the EHEC concentration on the process of binding can be described by a linear correlation when the psp breakpoint is plotted against the polymer concentration. (c) 2005 Elsevier B.V. All rights reserved. (Less)
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type
Contribution to journal
publication status
published
subject
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
256
issue
2-3
pages
171 - 180
publisher
Elsevier
external identifiers
  • wos:000228322800012
  • scopus:14844314832
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2005.01.017
language
English
LU publication?
yes
id
56263884-3e13-4436-b262-5c86102402f6 (old id 157216)
date added to LUP
2007-07-10 17:21:42
date last changed
2017-07-02 04:22:05
@article{56263884-3e13-4436-b262-5c86102402f6,
  abstract     = {Mixtures of ethyl (hydroxyethyl)cellulose (EHEC) and sodium dodecanoate (SDoD) were investigated using surface tension, conductivity and transmittance measurements. The parameters of the surfactant to polymer association processes such as the critical aggregation concentration (cac) and saturation of the polymer by SDoD (psp) were determined from the plots of surface tension and specific conductivity versus surfactant concentration. The transmittance versus [SDoD] profiles exhibited bands that, in conjunction with conductivity and surface tension data, gave support to the explanation of the behavior of EHEC-SDoD-water solutions. Transmittance bands determined in the presence of EHEC and surfactant are sensitive to the process of surfactant to polymer binding. In this process, a discontinuity point represented by a second broader peak in the transmittance plots was identified, implying a slight inhibition of the breakdown of the network process. This is explained as a kind of intermediate re-structural network of the complexes produced by the formation of regular SDoD micelles. It was demonstrated that the second conductivity breakpoint marks the polymer saturation by surfactant clusters, and the effect of the EHEC concentration on the process of binding can be described by a linear correlation when the psp breakpoint is plotted against the polymer concentration. (c) 2005 Elsevier B.V. All rights reserved.},
  author       = {Bo, A D and Schweitzer, B and Felippe, A C and Zanette, D and Lindman, Björn},
  issn         = {0927-7757},
  language     = {eng},
  number       = {2-3},
  pages        = {171--180},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Ethyl(hydroxyethyl)cellulose-sodium dodecanoate interaction investigated by surface tension and electrical conductivity techniques},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2005.01.017},
  volume       = {256},
  year         = {2005},
}