20.500.12556/DKUM-95172 Percolative dielectric behavior of titanium carbide MXene/cellulose nanofibrils composite films 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. percolation theory piezoelectric devices dielectric properties nanomaterials carbides biological systems biological models carbohydrates perkolacijska teorija piezoelektričnost dielektriki nanomateriali ogljikovi hidrati biološki sistemi biološki modeli karbidi true false true AIP Publishing Angleški jezik Slovenski jezik https://pubs.aip.org/aip/apm ©Author(s) 2024 Članek v reviji 2025-09-08 15:07:08 2025-09-08 15:07:09 2025-09-10 03:08:49 0000-00-00 00:00:00 2024 0 0 str. 111102-1-111102-8 št. 11, št. članka 111102 let. 12 Nov. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-08-06 2024-10-15 2024-11-01 620.1/.2 213750275 10.1063/5.0232250 2166-532X 111102_1_5.0232250.pdf 111102_1_5.0232250.pdf 1 7CF259897FD5565434DCA5B6505A7AF6 623b3da575794195f0dd56088c391cc3aab84e488e107190985e980cfdcab9e5 5ecda52f-8cb5-11f0-9059-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=197877 https://pubs.aip.org/aip/apm/article/12/11/111102/3318489/Percolative-dielectric-behavior-of-titanium 0 ba5735fb-8cb4-11f0-9059-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=197875 Fakulteta za strojništvo 0 0 0