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Thermodynamic Interactions and Phase Behavior of Multicomponent Blends Containing Supercritical Carbon Dioxide, Styrene-Acrylonitrile Random Copolymer, and Deuterated Poly(methyl methacrylate)

Young, Nicholas P.; Inceoglu, Sebnem; Stone, Gregory M.; Jackson, Andrew LU ; Kline, Steven R.; Costeux, Stephane and Balsara, Nitash P. (2014) In Macromolecules 47(22). p.8089-8097
Abstract
Small-angle neutron scattering (SANS) was used to probe the phase behavior of multicomponent mixtures of supercritical carbon dioxide (scCO(2)), styreneacrylonitrile random copolymer, and deuterated poly(methyl methacrylate). Ternary mixtures were homogeneous at low carbon dioxide pressures (PCO2) but phase separated as PCO2 was increased at constant temperature (T). Phase separation pressure was found to be a nonmonotonic function of T with a minimum at T = 60 degrees C. An expression based on the multicomponent random phase approximation was used to determine the interaction parameters between polymer and scCO(2) from a combination of SANS experiments on homogeneous ternary mixtures and measurements of scCO(2) uptake by the neat... (More)
Small-angle neutron scattering (SANS) was used to probe the phase behavior of multicomponent mixtures of supercritical carbon dioxide (scCO(2)), styreneacrylonitrile random copolymer, and deuterated poly(methyl methacrylate). Ternary mixtures were homogeneous at low carbon dioxide pressures (PCO2) but phase separated as PCO2 was increased at constant temperature (T). Phase separation pressure was found to be a nonmonotonic function of T with a minimum at T = 60 degrees C. An expression based on the multicomponent random phase approximation was used to determine the interaction parameters between polymer and scCO(2) from a combination of SANS experiments on homogeneous ternary mixtures and measurements of scCO(2) uptake by the neat polymers. Interaction parameters that underlie the nonmonotonic phase behavior described above collapse onto a straight line when plotted as a function of scCO(2) density. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Macromolecules
volume
47
issue
22
pages
8089 - 8097
publisher
The American Chemical Society
external identifiers
  • wos:000345552700043
  • scopus:84913583963
ISSN
0024-9297
DOI
10.1021/ma5018154
language
English
LU publication?
yes
id
1b2951fe-dc51-40b3-b478-24f1d7d60780 (old id 4962734)
date added to LUP
2015-01-29 12:38:58
date last changed
2017-01-01 04:09:49
@article{1b2951fe-dc51-40b3-b478-24f1d7d60780,
  abstract     = {Small-angle neutron scattering (SANS) was used to probe the phase behavior of multicomponent mixtures of supercritical carbon dioxide (scCO(2)), styreneacrylonitrile random copolymer, and deuterated poly(methyl methacrylate). Ternary mixtures were homogeneous at low carbon dioxide pressures (PCO2) but phase separated as PCO2 was increased at constant temperature (T). Phase separation pressure was found to be a nonmonotonic function of T with a minimum at T = 60 degrees C. An expression based on the multicomponent random phase approximation was used to determine the interaction parameters between polymer and scCO(2) from a combination of SANS experiments on homogeneous ternary mixtures and measurements of scCO(2) uptake by the neat polymers. Interaction parameters that underlie the nonmonotonic phase behavior described above collapse onto a straight line when plotted as a function of scCO(2) density.},
  author       = {Young, Nicholas P. and Inceoglu, Sebnem and Stone, Gregory M. and Jackson, Andrew and Kline, Steven R. and Costeux, Stephane and Balsara, Nitash P.},
  issn         = {0024-9297},
  language     = {eng},
  number       = {22},
  pages        = {8089--8097},
  publisher    = {The American Chemical Society},
  series       = {Macromolecules},
  title        = {Thermodynamic Interactions and Phase Behavior of Multicomponent Blends Containing Supercritical Carbon Dioxide, Styrene-Acrylonitrile Random Copolymer, and Deuterated Poly(methyl methacrylate)},
  url          = {http://dx.doi.org/10.1021/ma5018154},
  volume       = {47},
  year         = {2014},
}