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How does a non-ionic hydrophobically modified telechelic polymer interact with a non-ionic vesicle? Rheological aspects

dos Santos, Tiago; Medronho, Bruno; Antunes, Filipe E; Lindman, Björn LU and Miguel, Maria (2008) 20th European Colloid and Interface Society (ECIS) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 319(1-3). p.173-179
Abstract
The association between hydrophobically modified polyethylene glycol, HM-PEG, and non-ionic vesicles of tetraethylene glycol monododecyl ether, C12E4, was investigated. HM-PEG is in a triblock form, with an alkyl chain attached to each hydrophilic polymer-end. Such polymer structure is denoted as telechelic. The vesicle average radius was measured by self-diffusion measurements. The system exhibits both a monophasic gel and biphasic regions. The monophasic region was characterized from a theological point of view. We argue that the gel formation is due to the presence. of polymer crosslinks between different surfactant aggregates, once the polymer's hydrophobic moieties may adsorb into the vesicle bilayer. This association is strongly... (More)
The association between hydrophobically modified polyethylene glycol, HM-PEG, and non-ionic vesicles of tetraethylene glycol monododecyl ether, C12E4, was investigated. HM-PEG is in a triblock form, with an alkyl chain attached to each hydrophilic polymer-end. Such polymer structure is denoted as telechelic. The vesicle average radius was measured by self-diffusion measurements. The system exhibits both a monophasic gel and biphasic regions. The monophasic region was characterized from a theological point of view. We argue that the gel formation is due to the presence. of polymer crosslinks between different surfactant aggregates, once the polymer's hydrophobic moieties may adsorb into the vesicle bilayer. This association is strongly concentration dependent which is reflected in the monotonic increase of the storage modulus, relaxation time and shear viscosity with the addition of surfactant and/or polymer. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
gels, hydrophobically modified polymers, non-ionic surfactants, rheology, self-diffusion
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
319
issue
1-3
pages
173 - 179
publisher
Elsevier
conference name
20th European Colloid and Interface Society (ECIS)
external identifiers
  • wos:000257046000027
  • scopus:42949083293
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2007.03.045
language
English
LU publication?
yes
id
8e86aad7-ef4e-4166-82a5-e5003a6dfd4b (old id 1187043)
date added to LUP
2008-09-04 10:56:27
date last changed
2017-01-01 05:26:56
@inproceedings{8e86aad7-ef4e-4166-82a5-e5003a6dfd4b,
  abstract     = {The association between hydrophobically modified polyethylene glycol, HM-PEG, and non-ionic vesicles of tetraethylene glycol monododecyl ether, C12E4, was investigated. HM-PEG is in a triblock form, with an alkyl chain attached to each hydrophilic polymer-end. Such polymer structure is denoted as telechelic. The vesicle average radius was measured by self-diffusion measurements. The system exhibits both a monophasic gel and biphasic regions. The monophasic region was characterized from a theological point of view. We argue that the gel formation is due to the presence. of polymer crosslinks between different surfactant aggregates, once the polymer's hydrophobic moieties may adsorb into the vesicle bilayer. This association is strongly concentration dependent which is reflected in the monotonic increase of the storage modulus, relaxation time and shear viscosity with the addition of surfactant and/or polymer.},
  author       = {dos Santos, Tiago and Medronho, Bruno and Antunes, Filipe E and Lindman, Björn and Miguel, Maria},
  booktitle    = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  issn         = {0927-7757},
  keyword      = {gels,hydrophobically modified polymers,non-ionic surfactants,rheology,self-diffusion},
  language     = {eng},
  number       = {1-3},
  pages        = {173--179},
  publisher    = {Elsevier},
  title        = {How does a non-ionic hydrophobically modified telechelic polymer interact with a non-ionic vesicle? Rheological aspects},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2007.03.045},
  volume       = {319},
  year         = {2008},
}