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A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes

Polyimides rank among the most heat-resistant polymers and find application in a variety of fields, including transportation, electronics, and membrane technology. The aim of this work is to study the structural, thermal, mechanical, and gas permeation properties of polyimide based nanocomposite mem...

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Autores principales: Sapalidis, Andreas A., Karantzis, Panagiotis I., Vairis, Achilles, Nitodas, Stephanos F., Barbe, Stéphan, Favvas, Evangelos P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7361696/
https://www.ncbi.nlm.nih.gov/pubmed/32575517
http://dx.doi.org/10.3390/polym12061381
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author Sapalidis, Andreas A.
Karantzis, Panagiotis I.
Vairis, Achilles
Nitodas, Stephanos F.
Barbe, Stéphan
Favvas, Evangelos P.
author_facet Sapalidis, Andreas A.
Karantzis, Panagiotis I.
Vairis, Achilles
Nitodas, Stephanos F.
Barbe, Stéphan
Favvas, Evangelos P.
author_sort Sapalidis, Andreas A.
collection PubMed
description Polyimides rank among the most heat-resistant polymers and find application in a variety of fields, including transportation, electronics, and membrane technology. The aim of this work is to study the structural, thermal, mechanical, and gas permeation properties of polyimide based nanocomposite membranes in flat sheet configuration. For this purpose, numerous advanced techniques such as atomic force microscopy (AFM), SEM, TEM, TGA, FT-IR, tensile strength, elongation test, and gas permeability measurements were carried out. In particular, BTDA–TDI/MDI (Ρ84) co-polyimide was used as the matrix of the studied membranes, whereas multi-wall carbon nanotubes were employed as filler material at concentrations of up to 5 wt.% All studied films were prepared by the dry-cast process resulting in non-porous films of about 30–50 μm of thickness. An optimum filler concentration of 2 wt.% was estimated. At this concentration, both thermal and mechanical properties of the prepared membranes were improved, and the highest gas permeability values were also obtained. Finally, gas permeability experiments were carried out at 25, 50, and 100 °C with seven different pure gases. The results revealed that the uniform carbon nanotubes dispersion lead to enhanced gas permeation properties.
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spelling pubmed-73616962020-07-21 A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes Sapalidis, Andreas A. Karantzis, Panagiotis I. Vairis, Achilles Nitodas, Stephanos F. Barbe, Stéphan Favvas, Evangelos P. Polymers (Basel) Article Polyimides rank among the most heat-resistant polymers and find application in a variety of fields, including transportation, electronics, and membrane technology. The aim of this work is to study the structural, thermal, mechanical, and gas permeation properties of polyimide based nanocomposite membranes in flat sheet configuration. For this purpose, numerous advanced techniques such as atomic force microscopy (AFM), SEM, TEM, TGA, FT-IR, tensile strength, elongation test, and gas permeability measurements were carried out. In particular, BTDA–TDI/MDI (Ρ84) co-polyimide was used as the matrix of the studied membranes, whereas multi-wall carbon nanotubes were employed as filler material at concentrations of up to 5 wt.% All studied films were prepared by the dry-cast process resulting in non-porous films of about 30–50 μm of thickness. An optimum filler concentration of 2 wt.% was estimated. At this concentration, both thermal and mechanical properties of the prepared membranes were improved, and the highest gas permeability values were also obtained. Finally, gas permeability experiments were carried out at 25, 50, and 100 °C with seven different pure gases. The results revealed that the uniform carbon nanotubes dispersion lead to enhanced gas permeation properties. MDPI 2020-06-19 /pmc/articles/PMC7361696/ /pubmed/32575517 http://dx.doi.org/10.3390/polym12061381 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sapalidis, Andreas A.
Karantzis, Panagiotis I.
Vairis, Achilles
Nitodas, Stephanos F.
Barbe, Stéphan
Favvas, Evangelos P.
A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title_full A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title_fullStr A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title_full_unstemmed A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title_short A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
title_sort study of the reinforcement effect of mwcnts onto polyimide flat sheet membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7361696/
https://www.ncbi.nlm.nih.gov/pubmed/32575517
http://dx.doi.org/10.3390/polym12061381
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