Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)

Hydrothermally stable particles of the metal-organic framework MIL-101(Cr) were incorporated into a polysulfone (PSF) matrix to produce mixed-matrix or composite membranes with excellent dispersion of MIL-101 particles and good adhesion within the polymer matrix. Pure gas (O(2), N(2), CO(2) and CH(4...

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Autores principales: Jeazet, Harold B. Tanh, Koschine, Tönjes, Staudt, Claudia, Raetzke, Klaus, Janiak, Christoph
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4021949/
https://www.ncbi.nlm.nih.gov/pubmed/24957061
http://dx.doi.org/10.3390/membranes3040331
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author Jeazet, Harold B. Tanh
Koschine, Tönjes
Staudt, Claudia
Raetzke, Klaus
Janiak, Christoph
author_facet Jeazet, Harold B. Tanh
Koschine, Tönjes
Staudt, Claudia
Raetzke, Klaus
Janiak, Christoph
author_sort Jeazet, Harold B. Tanh
collection PubMed
description Hydrothermally stable particles of the metal-organic framework MIL-101(Cr) were incorporated into a polysulfone (PSF) matrix to produce mixed-matrix or composite membranes with excellent dispersion of MIL-101 particles and good adhesion within the polymer matrix. Pure gas (O(2), N(2), CO(2) and CH(4)) permeation tests showed a significant increase of gas permeabilities of the mixed-matrix membranes without any loss in selectivity. Positron annihilation lifetime spectroscopy (PALS) indicated that the increased gas permeability is due to the free volume in the PSF polymer and the added large free volume inside the MIL-101 particles. The trend of the gas transport properties of the composite membranes could be reproduced by a Maxwell model.
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spelling pubmed-40219492014-05-27 Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS) Jeazet, Harold B. Tanh Koschine, Tönjes Staudt, Claudia Raetzke, Klaus Janiak, Christoph Membranes (Basel) Article Hydrothermally stable particles of the metal-organic framework MIL-101(Cr) were incorporated into a polysulfone (PSF) matrix to produce mixed-matrix or composite membranes with excellent dispersion of MIL-101 particles and good adhesion within the polymer matrix. Pure gas (O(2), N(2), CO(2) and CH(4)) permeation tests showed a significant increase of gas permeabilities of the mixed-matrix membranes without any loss in selectivity. Positron annihilation lifetime spectroscopy (PALS) indicated that the increased gas permeability is due to the free volume in the PSF polymer and the added large free volume inside the MIL-101 particles. The trend of the gas transport properties of the composite membranes could be reproduced by a Maxwell model. MDPI 2013-10-25 /pmc/articles/PMC4021949/ /pubmed/24957061 http://dx.doi.org/10.3390/membranes3040331 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Jeazet, Harold B. Tanh
Koschine, Tönjes
Staudt, Claudia
Raetzke, Klaus
Janiak, Christoph
Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title_full Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title_fullStr Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title_full_unstemmed Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title_short Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS)
title_sort correlation of gas permeability in a metal-organic framework mil-101(cr)–polysulfone mixed-matrix membrane with free volume measurements by positron annihilation lifetime spectroscopy (pals)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4021949/
https://www.ncbi.nlm.nih.gov/pubmed/24957061
http://dx.doi.org/10.3390/membranes3040331
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