| Download | - View final version: Electrospun green fibers from Alberta oilsands asphaltenes (PDF, 3.8 MiB)
- View supplementary information: Electrospun green fibers from Alberta oilsands asphaltenes (PDF, 1.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/acs.energyfuels.3c00812 |
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| Author | Search for: Li, Aotian1; Search for: Simard, Benoit1ORCID identifier: https://orcid.org/0000-0001-6689-4308; Search for: Yim, Chae-Ho2ORCID identifier: https://orcid.org/0000-0001-7321-1288; Search for: Robertson, Gilles P.2; Search for: Zborowski, Andre2; Search for: Mercier, Patrick H. J.2; Search for: Kingston, Christopher T.1ORCID identifier: https://orcid.org/0000-0001-6222-8463; Search for: Guan, Jingwen1ORCID identifier: https://orcid.org/0000-0003-1759-2172 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
- National Research Council of Canada. Energy, Mining and Environment
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| Funder | Search for: National Research Council Canada; Search for: Alberta Innovates |
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| Format | Text, Article |
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| Subject | aromatic compounds; carbon fiber; electrospinning; fibers; hydrocarbons |
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| Abstract | Alberta oilsands asphaltenes (AOAs) are carbon-rich hydrocarbons obtained from the heaviest fraction in Alberta oilsands bitumen. They have little value in the current market. Asphaltenes are considered a problematic stream for bitumen transportation and processing, and they may be a potential feedstock for carbon fiber (CF) production. Effort has been devoted by researchers and the oil industry for developing asphaltenes into value-added products, in particular CFs. Major barriers have been identified for the conversion of asphaltenes to CFs. One of them is purification and priming of the AOA feedstock as the raw material varied significantly from extraction and applied isolation technologies. Here, we report the purification of raw AOAs for the purpose of forming AOA-green fibers through electrospinning, the comparison with the non-purified AOA raw materials, and the validation of the potential of conversion of asphaltenes toward CFs. Thermogravimetric analysis, elemental analysis, and scanning electron microscopy were carried out. AOA-green fibers were obtained with the as-received AOAs and the maltene-free AOAs by three optimized electrospinning protocols. These green fibers can be spun to a large size mat with a high degree of alignment through adjusting the collector rotation velocity. The diameters of the obtained AOA-green fibers are mostly in the range of 4–15 μm. The green fibers from the as-received AOAs could sustain up to 200 °C in air but fused with further increase of temperature, while the green fibers from the purified AOAs showed improved mechanical strength and were able to withstand temperatures up to 300 °C in air without fusing. This work will be of interest to the CF industry as a potential alternative approach for low-cost precursors. |
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| Publication date | 2023-09-08 |
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| Publisher | American Chemical Society |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 6a9fce6f-3106-4192-b8ae-f6deea6192d2 |
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| Record created | 2024-01-25 |
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| Record modified | 2024-01-25 |
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