| Title: | Percolative dielectric behavior of titanium carbide MXene/cellulose nanofibrils composite films |
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| Authors: | ID Jurečič, Vida (Author)
ID Lakshmanan, Subramanian (Author)
ID Novak, Nikola (Author)
ID Kokol, Vanja (Author)
ID Bobnar, Vid (Author) |
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| Files: |  111102_1_5.0232250.pdf (10,11 MB)
MD5: 7CF259897FD5565434DCA5B6505A7AF6
 https://pubs.aip.org/aip/apm/article/12/11/111102/3318489/Percolative-dielectric-behavior-of-titanium
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | Cellulose-based nanomaterials are fascinating renewable biosystems, yet low thermal conductivity and dielectric permittivity often limit their potential applications in flexible electronics. We report dielectric properties of composite films prepared by vacuum filtration or solvent casting method from the native (CNF) or carboxylated (TCNF) cellulose nanofibrils and high electrically and thermally conductive 2D titanium carbide (Ti3C2Tx) MXenes. Measurements over broad frequency and temperature ranges revealed the influence of preparation method and type of nanofibrils matrix on the overall dielectric response, as well as a notable impact of absorbed water, particularly on the cellulose’s secondary β and γ relaxations. A detailed investigation of material with the lowest amount of impurities, vacuum-filtered MXene/CNF composites, confirmed that the dielectric response follows the predictions of the percolation theory. The resulting strong enhancement of the dielectric permittivity on increasing MXene content demonstrates the potential of developed composites for applications in eco-friendly dielectric and piezoelectric devices. |
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| Keywords: | percolation theory, piezoelectric devices, dielectric properties, nanomaterials, carbides, biological systems, biological models, carbohydrates |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 06.08.2024 |
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| Article acceptance date: | 15.10.2024 |
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| Publication date: | 01.11.2024 |
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| Publisher: | AIP Publishing |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 111102-1-111102-8 |
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| Numbering: | let. 12, št. 11, št. članka 111102 |
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| PID: | 20.500.12556/DKUM-95172  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 2166-532X |
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| COBISS.SI-ID: | 213750275 |
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| DOI: | 10.1063/5.0232250 |
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| Copyright: | ©Author(s) 2024 |
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| Publication date in DKUM: | 08.09.2025 |
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| Views: | 154 |
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| Downloads: | 6 |
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| Metadata: |    |
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| Categories: | Misc.
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