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Macroporous elastic polyacrylamide gels prepared at subzero temperatures: control of porous structure

Plieva, Fatima LU ; Xiao, Huiting ; Galaev, Igor LU ; Bergenståhl, Björn LU and Mattiasson, Bo LU (2006) In Journal of Materials Chemistry 16(41). p.4065-4073
Abstract
Macroporous polyacrylamide gels (MPAAGs) with unique elastic morphology and open porous structure are prepared at subzero temperatures. The porous structure of MPAAGs consisting of large, 1 - 100 mu m-sized interconnected pores, is controlled by the freezing temperature, the content of the initiator system ( ammonium persulfate and N,N,N',N'-tetramethyl-ethylenediamine) in the initial reaction mixture and the solvent used. The initiator content, through its effects on the kinetics of polymerization, is an efficient tool of control allowing for the preparation of well defined macroporous elastic structures with either open interconnected pores or closed pores. In the semi-frozen reaction mixture, the dissolved monomers and initiators are... (More)
Macroporous polyacrylamide gels (MPAAGs) with unique elastic morphology and open porous structure are prepared at subzero temperatures. The porous structure of MPAAGs consisting of large, 1 - 100 mu m-sized interconnected pores, is controlled by the freezing temperature, the content of the initiator system ( ammonium persulfate and N,N,N',N'-tetramethyl-ethylenediamine) in the initial reaction mixture and the solvent used. The initiator content, through its effects on the kinetics of polymerization, is an efficient tool of control allowing for the preparation of well defined macroporous elastic structures with either open interconnected pores or closed pores. In the semi-frozen reaction mixture, the dissolved monomers and initiators are concentrated in the unfrozen liquid microphase where the polymerization reaction proceeds. The final freezing temperature, T-f ( defined as temperature fixed in a low temperature thermostat), as well as the solvent used affect the porous structure through their effect on the formation of the unfrozen liquid microphase. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Chemistry
volume
16
issue
41
pages
4065 - 4073
publisher
Royal Society of Chemistry
external identifiers
  • wos:000241365600009
  • scopus:33750152566
ISSN
1364-5501
DOI
10.1039/b606734d
language
English
LU publication?
yes
id
75098102-0be9-4f3f-8ce7-7de79e82b80e (old id 387933)
date added to LUP
2016-04-01 11:59:35
date last changed
2021-08-25 05:03:45
@article{75098102-0be9-4f3f-8ce7-7de79e82b80e,
  abstract     = {Macroporous polyacrylamide gels (MPAAGs) with unique elastic morphology and open porous structure are prepared at subzero temperatures. The porous structure of MPAAGs consisting of large, 1 - 100 mu m-sized interconnected pores, is controlled by the freezing temperature, the content of the initiator system ( ammonium persulfate and N,N,N',N'-tetramethyl-ethylenediamine) in the initial reaction mixture and the solvent used. The initiator content, through its effects on the kinetics of polymerization, is an efficient tool of control allowing for the preparation of well defined macroporous elastic structures with either open interconnected pores or closed pores. In the semi-frozen reaction mixture, the dissolved monomers and initiators are concentrated in the unfrozen liquid microphase where the polymerization reaction proceeds. The final freezing temperature, T-f ( defined as temperature fixed in a low temperature thermostat), as well as the solvent used affect the porous structure through their effect on the formation of the unfrozen liquid microphase.},
  author       = {Plieva, Fatima and Xiao, Huiting and Galaev, Igor and Bergenståhl, Björn and Mattiasson, Bo},
  issn         = {1364-5501},
  language     = {eng},
  number       = {41},
  pages        = {4065--4073},
  publisher    = {Royal Society of Chemistry},
  series       = {Journal of Materials Chemistry},
  title        = {Macroporous elastic polyacrylamide gels prepared at subzero temperatures: control of porous structure},
  url          = {http://dx.doi.org/10.1039/b606734d},
  doi          = {10.1039/b606734d},
  volume       = {16},
  year         = {2006},
}