Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing
A key aspect of advancing sustainable membrane technology is to source eco-friendly polymers, such as recycled plastic waste, use renewable plant-based solvents, and limit the number of solvents used in dissolution-precipitation processes. In this study, we upcycle polypropylene PP waste into bi-lay...
محفوظ في:
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| مؤلفون آخرون: | , , |
| التنسيق: | article |
| منشور في: |
2024
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://dx.doi.org/10.1016/j.cej.2024.148560 https://www.sciencedirect.com/science/article/pii/S1385894724000457 http://hdl.handle.net/10576/65100 |
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| _version_ | 1857415085874479104 |
|---|---|
| author | Saleem, Junaid |
| author2 | Moghal, Zubair Khalid Baig Luque, Rafael McKay, Gordon |
| author2_role | author author author |
| author_facet | Saleem, Junaid Moghal, Zubair Khalid Baig Luque, Rafael McKay, Gordon |
| author_role | author |
| dc.creator.none.fl_str_mv | Saleem, Junaid Moghal, Zubair Khalid Baig Luque, Rafael McKay, Gordon |
| dc.date.none.fl_str_mv | 2024-02-01 2025-05-22T05:04:40Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.cej.2024.148560 13858947 https://www.sciencedirect.com/science/article/pii/S1385894724000457 http://hdl.handle.net/10576/65100 481 1873-3212 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Plastic waste Polypropylene Valorization Green membranes Functional Surfaces Circular economy |
| dc.title.none.fl_str_mv | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | A key aspect of advancing sustainable membrane technology is to source eco-friendly polymers, such as recycled plastic waste, use renewable plant-based solvents, and limit the number of solvents used in dissolution-precipitation processes. In this study, we upcycle polypropylene PP waste into bi-layered microporous superhydrophobic membranes using a single plant-based solvent, Cymene, through tandem spin-casting and annealing. The surface roughness and hydrophobicity of the top layer enhance selectivity, while the presence of micropores ensures efficient liquid passage and high permeability. The microporous bottom layer serves as a substrate for the top layer, providing structural support. Various annealing conditions were employed to optimize hydrophobicity, roughness, porosity and strength of as-prepared membranes, yielding high permeance and outstanding separation efficiency. The fabricated membranes were subjected to oil–water emulsion separations, demonstrating a contact angle exceeding 155° and a surface roughness of 123 nm, resulting in an organic solvent flux of 14,000 Lm-2h−1 with a 96 % water rejection. Tensile strength and strain % were found to be 13–28 MPa and 20–27 %, respectively. This research provided access to environmentally friendly membranes, adding value to plastic waste with potential benefits to both the polymer and membrane industries as they transition towards a circular economy. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_7cd401a7d88c6ca78ab8c89d3ed2127a |
| identifier_str_mv | 13858947 481 1873-3212 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/65100 |
| publishDate | 2024 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealingSaleem, JunaidMoghal, Zubair Khalid BaigLuque, RafaelMcKay, GordonPlastic wastePolypropyleneValorizationGreen membranesFunctional SurfacesCircular economyA key aspect of advancing sustainable membrane technology is to source eco-friendly polymers, such as recycled plastic waste, use renewable plant-based solvents, and limit the number of solvents used in dissolution-precipitation processes. In this study, we upcycle polypropylene PP waste into bi-layered microporous superhydrophobic membranes using a single plant-based solvent, Cymene, through tandem spin-casting and annealing. The surface roughness and hydrophobicity of the top layer enhance selectivity, while the presence of micropores ensures efficient liquid passage and high permeability. The microporous bottom layer serves as a substrate for the top layer, providing structural support. Various annealing conditions were employed to optimize hydrophobicity, roughness, porosity and strength of as-prepared membranes, yielding high permeance and outstanding separation efficiency. The fabricated membranes were subjected to oil–water emulsion separations, demonstrating a contact angle exceeding 155° and a surface roughness of 123 nm, resulting in an organic solvent flux of 14,000 Lm-2h−1 with a 96 % water rejection. Tensile strength and strain % were found to be 13–28 MPa and 20–27 %, respectively. This research provided access to environmentally friendly membranes, adding value to plastic waste with potential benefits to both the polymer and membrane industries as they transition towards a circular economy.This publication was made possible by NPRP grant number NPRP12S-0325-190443 from the Qatar National Research Fund (a member of the Qatar Foundation). Open access funding is provided by Qatar National Library. The authors would also like to acknowledge Core Labs, Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation for providing assistance in SEM.Elsevier2025-05-22T05:04:40Z2024-02-01Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.cej.2024.14856013858947https://www.sciencedirect.com/science/article/pii/S1385894724000457http://hdl.handle.net/10576/651004811873-3212enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/651002025-05-22T19:07:11Z |
| spellingShingle | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing Saleem, Junaid Plastic waste Polypropylene Valorization Green membranes Functional Surfaces Circular economy |
| status_str | publishedVersion |
| title | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| title_full | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| title_fullStr | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| title_full_unstemmed | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| title_short | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| title_sort | Towards green membranes: Repurposing waste polypropylene with a single plant-based solvent via tandem spin-casting and annealing |
| topic | Plastic waste Polypropylene Valorization Green membranes Functional Surfaces Circular economy |
| url | http://dx.doi.org/10.1016/j.cej.2024.148560 https://www.sciencedirect.com/science/article/pii/S1385894724000457 http://hdl.handle.net/10576/65100 |