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Silica filled poly(1-trimethylsilyl-1-propyne) nanocomposite membranes: Relation between the transport of gases and structural characteristics

De Sitter, K ; Winberg, Petra LU ; D'Haen, J ; Dotremont, C ; Leysen, R ; Martens, JA ; Mullens, S ; Maurer, Frans LU and Vankelecom, IFJ (2006) In Journal of Membrane Science 278(1-2). p.83-91
Abstract
The performance of poly(1-trimethylsilyl-1-propyne) (PTMSP)/silica nanocomposites was studied for membranes with a filler content between 0 and 50 wt%. An increase in permeability and a decrease in vapor selectivity was measured with increasing filler content. The free volume sizes and interstitial mesopore sizes of the composites were determined by use of positron annihilation lifetime spectroscopy (PALS). In addition to an increase in large free volume size with increasing filler content, interstitial mesopores were observed in all PTMSP/silica nanocomposites. The size of these interstitial cavities, located between the particles of a silica agglomerate, was increasing with increasing filler concentration. The presence of these... (More)
The performance of poly(1-trimethylsilyl-1-propyne) (PTMSP)/silica nanocomposites was studied for membranes with a filler content between 0 and 50 wt%. An increase in permeability and a decrease in vapor selectivity was measured with increasing filler content. The free volume sizes and interstitial mesopore sizes of the composites were determined by use of positron annihilation lifetime spectroscopy (PALS). In addition to an increase in large free volume size with increasing filler content, interstitial mesopores were observed in all PTMSP/silica nanocomposites. The size of these interstitial cavities, located between the particles of a silica agglomerate, was increasing with increasing filler concentration. The presence of these agglomerates was visualized by TEM. The existence of the cavities was confirmed by nitrogen adsorption measurements. The hydrogen, nitrogen and propane permeability was clearly correlated with the size of the interstitial mesopores. (c) 2005 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
membrane performance, TEM, PALS, PTMSP, nanocomposites
in
Journal of Membrane Science
volume
278
issue
1-2
pages
83 - 91
publisher
Elsevier
external identifiers
  • wos:000238409300010
  • scopus:33646794377
ISSN
0376-7388
DOI
10.1016/j.memsci.2005.10.046
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
id
86dad516-e2ef-4f15-ac69-de2c44882e26 (old id 405993)
date added to LUP
2016-04-01 15:38:46
date last changed
2020-08-19 06:00:42
@article{86dad516-e2ef-4f15-ac69-de2c44882e26,
  abstract     = {The performance of poly(1-trimethylsilyl-1-propyne) (PTMSP)/silica nanocomposites was studied for membranes with a filler content between 0 and 50 wt%. An increase in permeability and a decrease in vapor selectivity was measured with increasing filler content. The free volume sizes and interstitial mesopore sizes of the composites were determined by use of positron annihilation lifetime spectroscopy (PALS). In addition to an increase in large free volume size with increasing filler content, interstitial mesopores were observed in all PTMSP/silica nanocomposites. The size of these interstitial cavities, located between the particles of a silica agglomerate, was increasing with increasing filler concentration. The presence of these agglomerates was visualized by TEM. The existence of the cavities was confirmed by nitrogen adsorption measurements. The hydrogen, nitrogen and propane permeability was clearly correlated with the size of the interstitial mesopores. (c) 2005 Elsevier B.V. All rights reserved.},
  author       = {De Sitter, K and Winberg, Petra and D'Haen, J and Dotremont, C and Leysen, R and Martens, JA and Mullens, S and Maurer, Frans and Vankelecom, IFJ},
  issn         = {0376-7388},
  language     = {eng},
  number       = {1-2},
  pages        = {83--91},
  publisher    = {Elsevier},
  series       = {Journal of Membrane Science},
  title        = {Silica filled poly(1-trimethylsilyl-1-propyne) nanocomposite membranes: Relation between the transport of gases and structural characteristics},
  url          = {http://dx.doi.org/10.1016/j.memsci.2005.10.046},
  doi          = {10.1016/j.memsci.2005.10.046},
  volume       = {278},
  year         = {2006},
}