Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure
The elimination of the additional defect healing post-treatment step in asymmetric hollow fiber manufacturing would result in a significant reduction in membrane production cost. However, obtaining integrally skinned polymeric asymmetric hollow fiber membranes with an ultrathin and defect-free selec...
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doaj-396732451d514fe78f52e883c760c4762020-11-25T00:11:40ZengMDPI AGMembranes2077-03752019-12-01101410.3390/membranes10010004membranes10010004Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized StructureMiren Etxeberria-Benavides0Oguz Karvan1Freek Kapteijn2Jorge Gascon3Oana David4TECNALIA, Parque Tecnológico de San Sebastián, Mikeletegi Pasealekua 2, 20009 Donostia-San Sebastián, SpainTECNALIA, Parque Tecnológico de San Sebastián, Mikeletegi Pasealekua 2, 20009 Donostia-San Sebastián, SpainCatalysis Engineering, Chemical Engineering Department, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The NetherlandsCatalysis Engineering, Chemical Engineering Department, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The NetherlandsTECNALIA, Parque Tecnológico de San Sebastián, Mikeletegi Pasealekua 2, 20009 Donostia-San Sebastián, SpainThe elimination of the additional defect healing post-treatment step in asymmetric hollow fiber manufacturing would result in a significant reduction in membrane production cost. However, obtaining integrally skinned polymeric asymmetric hollow fiber membranes with an ultrathin and defect-free selective layer is quite challenging. In this study, P84® asymmetric hollow fiber membranes with a highly thin (~56 nm) defect-free skin were successfully fabricated by fine tuning the dope composition and spinning parameters using volatile additive (tetrahydrofuran, THF) as key parameters. An extensive experimental and theoretical study of the influence of volatile THF addition on the solubility parameter of the N-methylpyrrolidone/THF solvent mixture was performed. Although THF itself is not a solvent for P84®, in a mixture with a good solvent for the polymer, like N-Methyl-2-pyrrolidone (NMP), it can be dissolved at high THF concentrations (NMP/THF ratio > 0.52). The as-spun fibers had a reproducible ideal CO<sub>2</sub>/N<sub>2</sub> selectivity of 40, and a CO<sub>2</sub> permeance of 23 GPU at 35 °C. The fiber production can be scaled-up with retention of the selectivity.https://www.mdpi.com/2077-0375/10/1/4co<sub>2</sub>/n<sub>2</sub> separationhollow fiber spinningultrathin skin layerdefect-free fibers |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Miren Etxeberria-Benavides Oguz Karvan Freek Kapteijn Jorge Gascon Oana David |
spellingShingle |
Miren Etxeberria-Benavides Oguz Karvan Freek Kapteijn Jorge Gascon Oana David Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure Membranes co<sub>2</sub>/n<sub>2</sub> separation hollow fiber spinning ultrathin skin layer defect-free fibers |
author_facet |
Miren Etxeberria-Benavides Oguz Karvan Freek Kapteijn Jorge Gascon Oana David |
author_sort |
Miren Etxeberria-Benavides |
title |
Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure |
title_short |
Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure |
title_full |
Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure |
title_fullStr |
Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure |
title_full_unstemmed |
Fabrication of Defect-Free P84<sup>®</sup> Polyimide Hollow Fiber for Gas Separation: Pathway to Formation of Optimized Structure |
title_sort |
fabrication of defect-free p84<sup>®</sup> polyimide hollow fiber for gas separation: pathway to formation of optimized structure |
publisher |
MDPI AG |
series |
Membranes |
issn |
2077-0375 |
publishDate |
2019-12-01 |
description |
The elimination of the additional defect healing post-treatment step in asymmetric hollow fiber manufacturing would result in a significant reduction in membrane production cost. However, obtaining integrally skinned polymeric asymmetric hollow fiber membranes with an ultrathin and defect-free selective layer is quite challenging. In this study, P84® asymmetric hollow fiber membranes with a highly thin (~56 nm) defect-free skin were successfully fabricated by fine tuning the dope composition and spinning parameters using volatile additive (tetrahydrofuran, THF) as key parameters. An extensive experimental and theoretical study of the influence of volatile THF addition on the solubility parameter of the N-methylpyrrolidone/THF solvent mixture was performed. Although THF itself is not a solvent for P84®, in a mixture with a good solvent for the polymer, like N-Methyl-2-pyrrolidone (NMP), it can be dissolved at high THF concentrations (NMP/THF ratio > 0.52). The as-spun fibers had a reproducible ideal CO<sub>2</sub>/N<sub>2</sub> selectivity of 40, and a CO<sub>2</sub> permeance of 23 GPU at 35 °C. The fiber production can be scaled-up with retention of the selectivity. |
topic |
co<sub>2</sub>/n<sub>2</sub> separation hollow fiber spinning ultrathin skin layer defect-free fibers |
url |
https://www.mdpi.com/2077-0375/10/1/4 |
work_keys_str_mv |
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