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Phase behavior and structure of an ABC triblock copolymer dissolved in selective solvent

Shusharina, N P; Alexandridis, P; Linse, Per LU ; Balijepalli, S and Gruenbauer, H J M (2003) In European Physical Journal E. Soft Matter 10(1). p.45-54
Abstract
A mean-field lattice theory is applied to predict the self-assembly

into ordered structures of an ABC triblock copolymer in selective solvent. More specifically, the composition-temperature phase diagram has been constructed for the system (C)(14)(PO)(12)(EO)(17)/water, where C stands for methylene, PO for propylene oxide and EO for ethylene oxide. The model predicts thermotropic phase transitions between the ordered hexagonal, lamellar, reverse hexagonal, and reverse cubic phases, as well as the disordered phase. The thermotropic behavior is a result of the temperature dependence of water interaction with EO- and PO-segments. The lyotropic effect (caused by changing the solvent concentration) on the formation of different... (More)
A mean-field lattice theory is applied to predict the self-assembly

into ordered structures of an ABC triblock copolymer in selective solvent. More specifically, the composition-temperature phase diagram has been constructed for the system (C)(14)(PO)(12)(EO)(17)/water, where C stands for methylene, PO for propylene oxide and EO for ethylene oxide. The model predicts thermotropic phase transitions between the ordered hexagonal, lamellar, reverse hexagonal, and reverse cubic phases, as well as the disordered phase. The thermotropic behavior is a result of the temperature dependence of water interaction with EO- and PO-segments. The lyotropic effect (caused by changing the solvent concentration) on the formation of different structures has been found weak. The structure in the ordered phases is described by analyzing the species volume fraction profiles and the end segment and junction distributions. A "triple-layer" structure has been found for each of the ordered phases, with each layer rich in C-, PO-, and EO-segments, respectively. The blocks forming the layers

re not stretched. The dependence of the domain spacing on polymer volume

fraction and temperature is also

considered. (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
European Physical Journal E. Soft Matter
volume
10
issue
1
pages
45 - 54
publisher
Springer
external identifiers
  • wos:000182407800006
  • pmid:15011078
  • scopus:0038575820
ISSN
1292-8941
DOI
10.1140/epje/e2003-00001-6
language
English
LU publication?
yes
id
03ce2acc-b06b-456e-8899-f910736a1233 (old id 122201)
date added to LUP
2007-07-12 11:34:46
date last changed
2017-08-20 04:34:04
@article{03ce2acc-b06b-456e-8899-f910736a1233,
  abstract     = {A mean-field lattice theory is applied to predict the self-assembly<br/><br>
into ordered structures of an ABC triblock copolymer in selective solvent. More specifically, the composition-temperature phase diagram has been constructed for the system (C)(14)(PO)(12)(EO)(17)/water, where C stands for methylene, PO for propylene oxide and EO for ethylene oxide. The model predicts thermotropic phase transitions between the ordered hexagonal, lamellar, reverse hexagonal, and reverse cubic phases, as well as the disordered phase. The thermotropic behavior is a result of the temperature dependence of water interaction with EO- and PO-segments. The lyotropic effect (caused by changing the solvent concentration) on the formation of different structures has been found weak. The structure in the ordered phases is described by analyzing the species volume fraction profiles and the end segment and junction distributions. A "triple-layer" structure has been found for each of the ordered phases, with each layer rich in C-, PO-, and EO-segments, respectively. The blocks forming the layers <br/><br>
re not stretched. The dependence of the domain spacing on polymer volume<br/><br>
	fraction and temperature is also<br/><br>
	considered.},
  author       = {Shusharina, N P and Alexandridis, P and Linse, Per and Balijepalli, S and Gruenbauer, H J M},
  issn         = {1292-8941},
  language     = {eng},
  number       = {1},
  pages        = {45--54},
  publisher    = {Springer},
  series       = {European Physical Journal E. Soft Matter},
  title        = {Phase behavior and structure of an ABC triblock copolymer dissolved in selective solvent},
  url          = {http://dx.doi.org/10.1140/epje/e2003-00001-6},
  volume       = {10},
  year         = {2003},
}