Development of ternary-component mixed-matrix membranes for advanced gas separations
Polymer-based mixed-matrix nanocomposites are increasingly researched as gas separation membranes. In contrast to the conventional single-filler mixed-matrix membranes (MMMs), here in this thesis study, I examined the utility of ternary-component MMMs for gas separation applications. The strategy...
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| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/136650 |
| _version_ | 1811678396479963136 |
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| author | Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka |
| author2 | Bae Tae Hyun |
| author_facet | Bae Tae Hyun Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka |
| author_sort | Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka |
| collection | NTU |
| description | Polymer-based mixed-matrix nanocomposites are increasingly researched as gas separation
membranes. In contrast to the conventional single-filler mixed-matrix membranes (MMMs), here
in this thesis study, I examined the utility of ternary-component MMMs for gas separation
applications. The strategy employed in this thesis was to develop Matrimid-based MMMs using
filler and a polymeric compatibilizer. As the filler, I selected a well-known oxygen carrier, cobalt
phthalocyanine. As the compatibilizer, I employed a block copolymer, Pluronic F-127. The
ternary-component membrane exhibited 64% improvement in O2 permeability and 40%
improvement in O2/N2 selectivity. To improve the selectivity, I focused on a high-permeability
polymer, ODPA-TMPDA, as the next step. The filler (cobalt (III) acetylacetonate) successfully
improved the selectivity but at the cost of permeability. Thus, I examined a porous covalent
organic framework, SNW-1, together with cobalt (III) acetylacetonate as the next step. This
strategy improved both O2 permeability and O2/N2 selectivity. Due to the success of ODPATMPDA-
based ternary-component membrane for O2/N2 separation, I have used ODPA-TMPDA
for the development of another ternary-component membrane for CO2/CH4 separation. In this
final step of the thesis work, I have incorporated 2D CuBDC nanosheets and 3D ZIF-8
nanoparticles to improve CO2/CH4 selectivity and CO2 permeability, respectively. Overall, this
study demonstrates the potential of ternary-component MMMs for developing gas separation
membranes that can surmount Robeson’s Upper Bound relation for permeability-selectivity
trade-off. |
| first_indexed | 2024-10-01T02:52:36Z |
| format | Thesis-Doctor of Philosophy |
| id | ntu-10356/136650 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:52:36Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1366502020-11-01T04:47:45Z Development of ternary-component mixed-matrix membranes for advanced gas separations Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka Bae Tae Hyun Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute thbae@kaist.ac.kr Engineering::Chemical engineering Engineering::Environmental engineering Engineering::Nanotechnology Polymer-based mixed-matrix nanocomposites are increasingly researched as gas separation membranes. In contrast to the conventional single-filler mixed-matrix membranes (MMMs), here in this thesis study, I examined the utility of ternary-component MMMs for gas separation applications. The strategy employed in this thesis was to develop Matrimid-based MMMs using filler and a polymeric compatibilizer. As the filler, I selected a well-known oxygen carrier, cobalt phthalocyanine. As the compatibilizer, I employed a block copolymer, Pluronic F-127. The ternary-component membrane exhibited 64% improvement in O2 permeability and 40% improvement in O2/N2 selectivity. To improve the selectivity, I focused on a high-permeability polymer, ODPA-TMPDA, as the next step. The filler (cobalt (III) acetylacetonate) successfully improved the selectivity but at the cost of permeability. Thus, I examined a porous covalent organic framework, SNW-1, together with cobalt (III) acetylacetonate as the next step. This strategy improved both O2 permeability and O2/N2 selectivity. Due to the success of ODPATMPDA- based ternary-component membrane for O2/N2 separation, I have used ODPA-TMPDA for the development of another ternary-component membrane for CO2/CH4 separation. In this final step of the thesis work, I have incorporated 2D CuBDC nanosheets and 3D ZIF-8 nanoparticles to improve CO2/CH4 selectivity and CO2 permeability, respectively. Overall, this study demonstrates the potential of ternary-component MMMs for developing gas separation membranes that can surmount Robeson’s Upper Bound relation for permeability-selectivity trade-off. Doctor of Philosophy 2020-01-09T02:03:20Z 2020-01-09T02:03:20Z 2019 Thesis-Doctor of Philosophy Samarasinghe, S. A. S. C. (2019). Development of ternary-component mixed-matrix membranes for advanced gas separations. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/136650 10.32657/10356/136650 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Chemical engineering Engineering::Environmental engineering Engineering::Nanotechnology Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title | Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title_full | Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title_fullStr | Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title_full_unstemmed | Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title_short | Development of ternary-component mixed-matrix membranes for advanced gas separations |
| title_sort | development of ternary component mixed matrix membranes for advanced gas separations |
| topic | Engineering::Chemical engineering Engineering::Environmental engineering Engineering::Nanotechnology |
| url | https://hdl.handle.net/10356/136650 |
| work_keys_str_mv | AT samarasinghesamarasinghearachchigesulashichathushka developmentofternarycomponentmixedmatrixmembranesforadvancedgasseparations |