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On the macro- and microphase separation of compatibilizers in immiscible polymer blends

Jannasch, Patric LU ; Hassander, Helen LU and Wesslén, Bengt LU (1996) In Journal of Polymer Science. Part B, Polymer Physics 34(7). p.1289-1299
Abstract
Macro- and microphase separation of compatibilizing graft copolymers in melt-mixed polystyrene/polyamide-6 blends was studied by transmission electron microscopy and thermal analysis. Three different graft copolymers with main chains of polystyrene and side chains of poly(ethylene oxide) were used as additives at various concentrations. The polyamide-6 domain sizes decreased with increasing amounts of compatibilizing graft copolymers in the blends up to a saturation concentration, after which no further reduction was noted. Macrophase separation of the graft copolymers into discrete macrodomains 20-200 nm in size occurred at concentrations equal to or slightly lower than the saturation concentration. The macrodomains of the graft... (More)
Macro- and microphase separation of compatibilizing graft copolymers in melt-mixed polystyrene/polyamide-6 blends was studied by transmission electron microscopy and thermal analysis. Three different graft copolymers with main chains of polystyrene and side chains of poly(ethylene oxide) were used as additives at various concentrations. The polyamide-6 domain sizes decreased with increasing amounts of compatibilizing graft copolymers in the blends up to a saturation concentration, after which no further reduction was noted. Macrophase separation of the graft copolymers into discrete macrodomains 20-200 nm in size occurred at concentrations equal to or slightly lower than the saturation concentration. The macrodomains of the graft copolymers were microphase separated, and the sizes and shapes of the microdomains were found to largely depend on the graft copolymer structure and composition. As a consequence of microphase separation, poly(ethylene oxide) crystallinity was noted in blends with sufficiently high macrophase contents. Observations of a graft copolymer interphase between the polystyrene matrix and the polyamide-6 domains confirmed that the graft copolymer was present at the blend interfaces in some of the compatibilized blends. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Polymer Science. Part B, Polymer Physics
volume
34
issue
7
pages
1289 - 1299
publisher
John Wiley & Sons
external identifiers
  • scopus:0030150388
ISSN
0887-6266
DOI
10.1002/(SICI)1099-0488(199605)34:7<1289::AID-POLB11>3.0.CO;2-6
language
English
LU publication?
yes
id
e907082b-efba-43b9-bb00-84ec95904aa0 (old id 149580)
date added to LUP
2007-07-13 12:29:24
date last changed
2017-01-01 06:56:52
@article{e907082b-efba-43b9-bb00-84ec95904aa0,
  abstract     = {Macro- and microphase separation of compatibilizing graft copolymers in melt-mixed polystyrene/polyamide-6 blends was studied by transmission electron microscopy and thermal analysis. Three different graft copolymers with main chains of polystyrene and side chains of poly(ethylene oxide) were used as additives at various concentrations. The polyamide-6 domain sizes decreased with increasing amounts of compatibilizing graft copolymers in the blends up to a saturation concentration, after which no further reduction was noted. Macrophase separation of the graft copolymers into discrete macrodomains 20-200 nm in size occurred at concentrations equal to or slightly lower than the saturation concentration. The macrodomains of the graft copolymers were microphase separated, and the sizes and shapes of the microdomains were found to largely depend on the graft copolymer structure and composition. As a consequence of microphase separation, poly(ethylene oxide) crystallinity was noted in blends with sufficiently high macrophase contents. Observations of a graft copolymer interphase between the polystyrene matrix and the polyamide-6 domains confirmed that the graft copolymer was present at the blend interfaces in some of the compatibilized blends.},
  author       = {Jannasch, Patric and Hassander, Helen and Wesslén, Bengt},
  issn         = {0887-6266},
  language     = {eng},
  number       = {7},
  pages        = {1289--1299},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Polymer Science. Part B, Polymer Physics},
  title        = {On the macro- and microphase separation of compatibilizers in immiscible polymer blends},
  url          = {http://dx.doi.org/10.1002/(SICI)1099-0488(199605)34:7<1289::AID-POLB11>3.0.CO;2-6},
  volume       = {34},
  year         = {1996},
}