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Porous polymaleimide networks

Jannasch, Patric LU (2001) In Journal of Materials Chemistry 11(9). p.2303-2306
Abstract
Porous network structures were prepared by in situ polymerisation of a mixture of N-phenylmaleimide and 1, 1'-(methylenedi-4,1-plienylene)bismaleimide (95:5 w/w) in poly(vinylidene difluoride-co-hexafluoropropylene) (PVDH). The mixture of the maleimide monomers was found to form thermoreversible gels with PVDH. Thermodynamic analysis of the gelation process using calorimetry data indicated the formation of complexes of N-phenylmaleimide and vinylidene difluoride repeat units with a molar ratio of 1:2, respectively. PVDH formed optically clear solutions in the mixture above the gelation temperature, observed at 80-120 degreesC depending on composition. Polymerisation of the maleimides was induced by increasing the temperature to 250... (More)
Porous network structures were prepared by in situ polymerisation of a mixture of N-phenylmaleimide and 1, 1'-(methylenedi-4,1-plienylene)bismaleimide (95:5 w/w) in poly(vinylidene difluoride-co-hexafluoropropylene) (PVDH). The mixture of the maleimide monomers was found to form thermoreversible gels with PVDH. Thermodynamic analysis of the gelation process using calorimetry data indicated the formation of complexes of N-phenylmaleimide and vinylidene difluoride repeat units with a molar ratio of 1:2, respectively. PVDH formed optically clear solutions in the mixture above the gelation temperature, observed at 80-120 degreesC depending on composition. Polymerisation of the maleimides was induced by increasing the temperature to 250 degreesC. During polymerisation, the resulting polymaleimide phase separated from the PVDH melt. A morphological study by microscopy revealed that blends with 80 wt% PVDH contained continuous networks of crosslinked polymaleimide. The porous networks were collected after removing the PVDH by solvent extraction. Thermogravimetrical analysis of the polymaleimide networks under N-2 atmosphere showed that the onset of weight loss occurred at 380 degreesC. These networks may thus be used to prepare thermally stable membranes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Chemistry
volume
11
issue
9
pages
2303 - 2306
publisher
Royal Society of Chemistry
external identifiers
  • scopus:0034849629
ISSN
1364-5501
DOI
10.1039/b105152k
language
English
LU publication?
yes
id
e80e0b67-73b2-4aed-85a9-873e2f0bda25 (old id 150797)
date added to LUP
2007-07-13 12:23:02
date last changed
2018-05-29 10:46:54
@article{e80e0b67-73b2-4aed-85a9-873e2f0bda25,
  abstract     = {Porous network structures were prepared by in situ polymerisation of a mixture of N-phenylmaleimide and 1, 1'-(methylenedi-4,1-plienylene)bismaleimide (95:5 w/w) in poly(vinylidene difluoride-co-hexafluoropropylene) (PVDH). The mixture of the maleimide monomers was found to form thermoreversible gels with PVDH. Thermodynamic analysis of the gelation process using calorimetry data indicated the formation of complexes of N-phenylmaleimide and vinylidene difluoride repeat units with a molar ratio of 1:2, respectively. PVDH formed optically clear solutions in the mixture above the gelation temperature, observed at 80-120 degreesC depending on composition. Polymerisation of the maleimides was induced by increasing the temperature to 250 degreesC. During polymerisation, the resulting polymaleimide phase separated from the PVDH melt. A morphological study by microscopy revealed that blends with 80 wt% PVDH contained continuous networks of crosslinked polymaleimide. The porous networks were collected after removing the PVDH by solvent extraction. Thermogravimetrical analysis of the polymaleimide networks under N-2 atmosphere showed that the onset of weight loss occurred at 380 degreesC. These networks may thus be used to prepare thermally stable membranes.},
  author       = {Jannasch, Patric},
  issn         = {1364-5501},
  language     = {eng},
  number       = {9},
  pages        = {2303--2306},
  publisher    = {Royal Society of Chemistry},
  series       = {Journal of Materials Chemistry},
  title        = {Porous polymaleimide networks},
  url          = {http://dx.doi.org/10.1039/b105152k},
  volume       = {11},
  year         = {2001},
}