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Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances

Copoly(o-hydroxyamide)s (HPA) and copoly(o-hydroxyamide-amide)s (PAA) have been synthesized to be used as continuous phases in mixed matrix membranes (MMMs). These polymeric matrices were blended with different loads (15 and 30 wt.%) of a relatively highly microporous porous polymer network (PPN). S...

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Autores principales: Soto, Cenit, Comesaña-Gandara, Bibiana, Marcos, Ángel, Cuadrado, Purificación, Palacio, Laura, Lozano, Ángel E., Álvarez, Cristina, Prádanos, Pedro, Hernandez, Antonio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609112/
https://www.ncbi.nlm.nih.gov/pubmed/36295757
http://dx.doi.org/10.3390/membranes12100998
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author Soto, Cenit
Comesaña-Gandara, Bibiana
Marcos, Ángel
Cuadrado, Purificación
Palacio, Laura
Lozano, Ángel E.
Álvarez, Cristina
Prádanos, Pedro
Hernandez, Antonio
author_facet Soto, Cenit
Comesaña-Gandara, Bibiana
Marcos, Ángel
Cuadrado, Purificación
Palacio, Laura
Lozano, Ángel E.
Álvarez, Cristina
Prádanos, Pedro
Hernandez, Antonio
author_sort Soto, Cenit
collection PubMed
description Copoly(o-hydroxyamide)s (HPA) and copoly(o-hydroxyamide-amide)s (PAA) have been synthesized to be used as continuous phases in mixed matrix membranes (MMMs). These polymeric matrices were blended with different loads (15 and 30 wt.%) of a relatively highly microporous porous polymer network (PPN). SEM images of the manufactured MMMs exhibited good compatibility between the two phases for all the membranes studied, and their mechanical properties have been shown to be good enough even after thermal treatment. The WAX results show that the addition of PPN as a filler up to 30% does not substantially change the intersegmental distance and the polymer packing. It seems that, for all the membranes studied, the free volume that determines gas transport is in the high end of the possible range. This means that gas flow occurs mainly between the microvoids in the polymer matrix around the filler. In general, both HPA- and PAA-based MMMs exhibited a notable improvement in gas permeability, due to the presence of PPN, for all gases tested, with an almost constant selectivity. In summary, although the thermal stability of the PAA is limited by the thermal stability of the polyamide side chain, their mechanical properties were better. The permeability was higher for the PAA membranes before their thermal rearrangement, and these values increased after the addition of moderate amounts of PPN.
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spelling pubmed-96091122022-10-28 Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances Soto, Cenit Comesaña-Gandara, Bibiana Marcos, Ángel Cuadrado, Purificación Palacio, Laura Lozano, Ángel E. Álvarez, Cristina Prádanos, Pedro Hernandez, Antonio Membranes (Basel) Article Copoly(o-hydroxyamide)s (HPA) and copoly(o-hydroxyamide-amide)s (PAA) have been synthesized to be used as continuous phases in mixed matrix membranes (MMMs). These polymeric matrices were blended with different loads (15 and 30 wt.%) of a relatively highly microporous porous polymer network (PPN). SEM images of the manufactured MMMs exhibited good compatibility between the two phases for all the membranes studied, and their mechanical properties have been shown to be good enough even after thermal treatment. The WAX results show that the addition of PPN as a filler up to 30% does not substantially change the intersegmental distance and the polymer packing. It seems that, for all the membranes studied, the free volume that determines gas transport is in the high end of the possible range. This means that gas flow occurs mainly between the microvoids in the polymer matrix around the filler. In general, both HPA- and PAA-based MMMs exhibited a notable improvement in gas permeability, due to the presence of PPN, for all gases tested, with an almost constant selectivity. In summary, although the thermal stability of the PAA is limited by the thermal stability of the polyamide side chain, their mechanical properties were better. The permeability was higher for the PAA membranes before their thermal rearrangement, and these values increased after the addition of moderate amounts of PPN. MDPI 2022-10-14 /pmc/articles/PMC9609112/ /pubmed/36295757 http://dx.doi.org/10.3390/membranes12100998 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Soto, Cenit
Comesaña-Gandara, Bibiana
Marcos, Ángel
Cuadrado, Purificación
Palacio, Laura
Lozano, Ángel E.
Álvarez, Cristina
Prádanos, Pedro
Hernandez, Antonio
Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title_full Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title_fullStr Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title_full_unstemmed Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title_short Thermally Rearranged Mixed Matrix Membranes from Copoly(o-hydroxyamide)s and Copoly(o-hydroxyamide-amide)s with a Porous Polymer Network as a Filler—A Comparison of Their Gas Separation Performances
title_sort thermally rearranged mixed matrix membranes from copoly(o-hydroxyamide)s and copoly(o-hydroxyamide-amide)s with a porous polymer network as a filler—a comparison of their gas separation performances
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609112/
https://www.ncbi.nlm.nih.gov/pubmed/36295757
http://dx.doi.org/10.3390/membranes12100998
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