Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters
High polymer tunneling resistivity (ρ) enhances tunneling resistance, thereby restricting electron transferring in nanocomposites; however, ρ remains an ambiguous parameter. In this work, two developed models for electrical conductivity of carbon nanofiber (CNF) polymer samples (PCNFs) are integrate...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425009184 |
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| author | Yasser Zare Muhammad Naqvi Kyong Yop Rhee Soo-Jin Park |
| author_facet | Yasser Zare Muhammad Naqvi Kyong Yop Rhee Soo-Jin Park |
| author_sort | Yasser Zare |
| collection | DOAJ |
| description | High polymer tunneling resistivity (ρ) enhances tunneling resistance, thereby restricting electron transferring in nanocomposites; however, ρ remains an ambiguous parameter. In this work, two developed models for electrical conductivity of carbon nanofiber (CNF) polymer samples (PCNFs) are integrated to express ρ by CNF characteristics (concentration, conductivity, percolation threshold, size and waviness), interphase depth, network fraction, and tunneling dimensions (length and diameter). Extensive experimental data are used to validate the models. Furthermore, ρ is calculated for several samples from prior studies. The effects of various factors on ρ are analyzed to confirm the validity of the proposed equation. The resulting patterns elucidate the key parameters governing ρ in PCNFs. A lower percolation threshold, thicker interphase, higher network fraction, greater CNF conductivity, along with shorter and wider tunnels, lead to reduced ρ. The maximum ρ, recorded at 1600 Ω m, occurs at a CNF radius (R) = 100 nm and CNF length (l) = 40 μm, while R < 70 nm or l > 80 μm decreases ρ to 87 Ω m. Thus, thinner or longer nanofibers substantially reduce the ρ improving the charge transferring. |
| format | Article |
| id | doaj-art-caa30b7b614c4c4d97ceb8b63df7dbc8 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-caa30b7b614c4c4d97ceb8b63df7dbc82025-08-20T02:16:02ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01363949395710.1016/j.jmrt.2025.04.097Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parametersYasser Zare0Muhammad Naqvi1Kyong Yop Rhee2Soo-Jin Park3Biomaterials and Tissue Engineering Research Group, Department of Interdisciplinary Technologies, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, IranCollege of Engineering and Technology, American University of the Middle East, Egaila, 54200, KuwaitDepartment of Mechanical Engineering (BK21 four), College of Engineering, Kyung Hee University, Yongin, Republic of Korea; Corresponding author.Department of Mechanical Engineering (BK21 four), College of Engineering, Kyung Hee University, Yongin, Republic of Korea; Corresponding author.High polymer tunneling resistivity (ρ) enhances tunneling resistance, thereby restricting electron transferring in nanocomposites; however, ρ remains an ambiguous parameter. In this work, two developed models for electrical conductivity of carbon nanofiber (CNF) polymer samples (PCNFs) are integrated to express ρ by CNF characteristics (concentration, conductivity, percolation threshold, size and waviness), interphase depth, network fraction, and tunneling dimensions (length and diameter). Extensive experimental data are used to validate the models. Furthermore, ρ is calculated for several samples from prior studies. The effects of various factors on ρ are analyzed to confirm the validity of the proposed equation. The resulting patterns elucidate the key parameters governing ρ in PCNFs. A lower percolation threshold, thicker interphase, higher network fraction, greater CNF conductivity, along with shorter and wider tunnels, lead to reduced ρ. The maximum ρ, recorded at 1600 Ω m, occurs at a CNF radius (R) = 100 nm and CNF length (l) = 40 μm, while R < 70 nm or l > 80 μm decreases ρ to 87 Ω m. Thus, thinner or longer nanofibers substantially reduce the ρ improving the charge transferring.http://www.sciencedirect.com/science/article/pii/S2238785425009184Polymer nanocompositeCarbon nanofiberElectrical conductivityPolymer tunneling resistivityInterphase percolation |
| spellingShingle | Yasser Zare Muhammad Naqvi Kyong Yop Rhee Soo-Jin Park Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters Journal of Materials Research and Technology Polymer nanocomposite Carbon nanofiber Electrical conductivity Polymer tunneling resistivity Interphase percolation |
| title | Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters |
| title_full | Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters |
| title_fullStr | Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters |
| title_full_unstemmed | Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters |
| title_short | Controlling of tunneling resistance in carbon nanofiber polymer composites: A novel equation for polymer tunneling resistivity by quantifiable parameters |
| title_sort | controlling of tunneling resistance in carbon nanofiber polymer composites a novel equation for polymer tunneling resistivity by quantifiable parameters |
| topic | Polymer nanocomposite Carbon nanofiber Electrical conductivity Polymer tunneling resistivity Interphase percolation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425009184 |
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