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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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/6/1381 |
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| author | Andreas A. Sapalidis Panagiotis I. Karantzis Achilles Vairis Stephanos F. Nitodas Stéphan Barbe Evangelos P. Favvas |
| author_facet | Andreas A. Sapalidis Panagiotis I. Karantzis Achilles Vairis Stephanos F. Nitodas Stéphan Barbe Evangelos P. Favvas |
| author_sort | Andreas A. Sapalidis |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T19:00:51Z |
| format | Article |
| id | doaj.art-0aa5b069758f4bebb54aa7688383cbad |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T19:00:51Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0aa5b069758f4bebb54aa7688383cbad2023-11-20T04:22:58ZengMDPI AGPolymers2073-43602020-06-01126138110.3390/polym12061381A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet MembranesAndreas A. Sapalidis0Panagiotis I. Karantzis1Achilles Vairis2Stephanos F. Nitodas3Stéphan Barbe4Evangelos P. Favvas5Membranes and Materials for Environmental Separations Laboratory, Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Ag. Paraskevi, 15341 Attica, GreeceMembranes and Materials for Environmental Separations Laboratory, Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Ag. Paraskevi, 15341 Attica, GreeceDepartment of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion Crete, GreeceDepartment of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, USATechnische Hochschule Köln, Faculty of Applied Natural Sciences, Kaiser-Wilhelm-Allee, Gebäude E39, 51373 Leverkusen, GermanyMembranes and Materials for Environmental Separations Laboratory, Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Ag. Paraskevi, 15341 Attica, GreecePolyimides 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.https://www.mdpi.com/2073-4360/12/6/1381polymer nanocomposite materialsmixed matrix membranescarbon nanotubesmechanical propertiesthermal propertiesgas permeability |
| spellingShingle | Andreas A. Sapalidis Panagiotis I. Karantzis Achilles Vairis Stephanos F. Nitodas Stéphan Barbe Evangelos P. Favvas A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes Polymers polymer nanocomposite materials mixed matrix membranes carbon nanotubes mechanical properties thermal properties gas permeability |
| 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 | polymer nanocomposite materials mixed matrix membranes carbon nanotubes mechanical properties thermal properties gas permeability |
| url | https://www.mdpi.com/2073-4360/12/6/1381 |
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