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Thermo-Resistant Soft Glassy Suspensions of Polymeric Micellar Nanoparticles in Ionic Liquid

Gkermpoura, Sandra; Obiols-Rabasa, Marc LU ; Iatridi, Zacharoula and Tsitsilianis, Constantinos (2015) In ACS Applied Materials and Interfaces 7(23). p.12411-12421
Abstract
We report the rheological and structural properties of a suspension comprising poly(ethylene oxide)-polystyrene-poly(ethylene oxide) core-shell micellar nanoparticles dispersed in 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid. A liquid to soft solid transition was observed at a copolymer concentration of 10 wt % above which an elastic soft material was formed, which was composed of non-ordered jammed core-shell micellar nanoparticles. In the soft solid state, a significant reduction in the size of the nanoparticles, approaching hard sphere behavior, was observed by small-angle X-ray scattering which is attributed to compression of the soft poly(ethylene oxide) coronas. The nonvolatile ionic liquid-based glassy soft solid... (More)
We report the rheological and structural properties of a suspension comprising poly(ethylene oxide)-polystyrene-poly(ethylene oxide) core-shell micellar nanoparticles dispersed in 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid. A liquid to soft solid transition was observed at a copolymer concentration of 10 wt % above which an elastic soft material was formed, which was composed of non-ordered jammed core-shell micellar nanoparticles. In the soft solid state, a significant reduction in the size of the nanoparticles, approaching hard sphere behavior, was observed by small-angle X-ray scattering which is attributed to compression of the soft poly(ethylene oxide) coronas. The nonvolatile ionic liquid-based glassy soft solid formed exhibited remarkable thermal stability with a melting temperature of 141 °C at 20 wt % copolymer, which renders it suitable for applications involving elevated temperatures and/or reduced pressure where water-based formulations are inappropriate. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Applied Materials and Interfaces
volume
7
issue
23
pages
12411 - 12421
publisher
The American Chemical Society
external identifiers
  • wos:000356753500015
  • scopus:84934889288
ISSN
1944-8244
DOI
10.1021/am507587s
language
English
LU publication?
yes
id
417c8b06-7a7e-4181-8afa-51c23717b6be (old id 5276494)
date added to LUP
2015-06-04 14:30:36
date last changed
2017-01-01 03:24:29
@article{417c8b06-7a7e-4181-8afa-51c23717b6be,
  abstract     = {We report the rheological and structural properties of a suspension comprising poly(ethylene oxide)-polystyrene-poly(ethylene oxide) core-shell micellar nanoparticles dispersed in 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid. A liquid to soft solid transition was observed at a copolymer concentration of 10 wt % above which an elastic soft material was formed, which was composed of non-ordered jammed core-shell micellar nanoparticles. In the soft solid state, a significant reduction in the size of the nanoparticles, approaching hard sphere behavior, was observed by small-angle X-ray scattering which is attributed to compression of the soft poly(ethylene oxide) coronas. The nonvolatile ionic liquid-based glassy soft solid formed exhibited remarkable thermal stability with a melting temperature of 141 °C at 20 wt % copolymer, which renders it suitable for applications involving elevated temperatures and/or reduced pressure where water-based formulations are inappropriate.},
  author       = {Gkermpoura, Sandra and Obiols-Rabasa, Marc and Iatridi, Zacharoula and Tsitsilianis, Constantinos},
  issn         = {1944-8244},
  language     = {eng},
  number       = {23},
  pages        = {12411--12421},
  publisher    = {The American Chemical Society},
  series       = {ACS Applied Materials and Interfaces},
  title        = {Thermo-Resistant Soft Glassy Suspensions of Polymeric Micellar Nanoparticles in Ionic Liquid},
  url          = {http://dx.doi.org/10.1021/am507587s},
  volume       = {7},
  year         = {2015},
}