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Uniform Pores in Cross-Linked Polymers by Dispersed Fumed Silica Templating

Duarte, Mariana LU ; Billing, Johan; Liu, Yan; Leeman, Mats; Karlsson, Ola LU and Yilmaz, Ecevit (2015) In Macromolecules 48(13). p.4382-4387
Abstract
Hydrophobic fumed silica dispersions in organic monomers were explored as a pore-forming system in polymer synthesis. The method developed provides a simple and effective way of controlling the pore size in highly cross-linked polymers. Fumed silica suspensions in divinylbenzene were polymerized with subsequent etching of the silica particles, therefore creating the porosity in the polymer. The resulting polymers are mesoporous materials, exhibiting an extremely narrow pore size distribution with an average pore size of about 100 angstrom, replicating the size of the nanofiller. BET surface areas were found appreciably high (similar to 350 m(2)/g). Furthermore, the rheological behavior of the prepolymerization mixtures was studied to... (More)
Hydrophobic fumed silica dispersions in organic monomers were explored as a pore-forming system in polymer synthesis. The method developed provides a simple and effective way of controlling the pore size in highly cross-linked polymers. Fumed silica suspensions in divinylbenzene were polymerized with subsequent etching of the silica particles, therefore creating the porosity in the polymer. The resulting polymers are mesoporous materials, exhibiting an extremely narrow pore size distribution with an average pore size of about 100 angstrom, replicating the size of the nanofiller. BET surface areas were found appreciably high (similar to 350 m(2)/g). Furthermore, the rheological behavior of the prepolymerization mixtures was studied to elucidate the formation of the porous network and showed that a tridimensional network of particles is formed at a minimum silica fraction (Phi(v)) of 0.08. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Macromolecules
volume
48
issue
13
pages
4382 - 4387
publisher
The American Chemical Society
external identifiers
  • wos:000358104900016
  • scopus:84937231378
ISSN
0024-9297
DOI
10.1021/acs.macromol.5b00263
language
English
LU publication?
yes
id
6f86634d-abc3-4afa-ad41-4980cfdfced9 (old id 7779820)
date added to LUP
2015-09-18 16:07:47
date last changed
2017-01-01 03:17:43
@article{6f86634d-abc3-4afa-ad41-4980cfdfced9,
  abstract     = {Hydrophobic fumed silica dispersions in organic monomers were explored as a pore-forming system in polymer synthesis. The method developed provides a simple and effective way of controlling the pore size in highly cross-linked polymers. Fumed silica suspensions in divinylbenzene were polymerized with subsequent etching of the silica particles, therefore creating the porosity in the polymer. The resulting polymers are mesoporous materials, exhibiting an extremely narrow pore size distribution with an average pore size of about 100 angstrom, replicating the size of the nanofiller. BET surface areas were found appreciably high (similar to 350 m(2)/g). Furthermore, the rheological behavior of the prepolymerization mixtures was studied to elucidate the formation of the porous network and showed that a tridimensional network of particles is formed at a minimum silica fraction (Phi(v)) of 0.08.},
  author       = {Duarte, Mariana and Billing, Johan and Liu, Yan and Leeman, Mats and Karlsson, Ola and Yilmaz, Ecevit},
  issn         = {0024-9297},
  language     = {eng},
  number       = {13},
  pages        = {4382--4387},
  publisher    = {The American Chemical Society},
  series       = {Macromolecules},
  title        = {Uniform Pores in Cross-Linked Polymers by Dispersed Fumed Silica Templating},
  url          = {http://dx.doi.org/10.1021/acs.macromol.5b00263},
  volume       = {48},
  year         = {2015},
}