Ott, Alexander (2022)
Conversion of Cellulose-based Papers into Functional Ceramic Papers.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00021595
Ph.D. Thesis, Primary publication, Publisher's Version
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Conversion of Cellulose-based Papers into Functional Ceramic Papers | ||||
Language: | English | ||||
Referees: | Ionescu, PD Dr. Emanuel ; Weidenkaff, Prof. Dr. Anke | ||||
Date: | 2022 | ||||
Place of Publication: | Darmstadt | ||||
Collation: | XVII, 107, XVIII-XXXIII Seiten | ||||
Date of oral examination: | 29 September 2022 | ||||
DOI: | 10.26083/tuprints-00021595 | ||||
Abstract: | Paper has been used for thousands of years, be it as a writing utensil like Papyrus or in different applications, for example as cellulose-based nanogenerators, as shape memory polymers, or as membranes for wound healing. Its microstructure shows randomly arranged fibers consisting of cellulose. Furthermore, it represents a good alternative as a template material due to its unique intrinsic properties and versatile modification potential as a functional material. The main characteristic of functional materials is their tunability towards the desired electronic, magnetic, or optical properties. This dissertation introduces the synthesis of functional ceramic papers and focuses on the understanding of occurring processes during functionalization. The ceramic papers were produced using a so-called “One-Pot” synthesis approach by dipping different types of cellulose-based papers (Sartorius, Linters and Eucalyptus) into a solution, consisting of different transition metals and polysilazanes. After vacuum drying the impregnated pre-ceramic papers, they were pyrolyzed at different atmospheres and temperatures. The phase composition of the produced ceramic papers and the belonging powders were studied using different characterization techniques. Fourier-transform infrared spectroscopy (FTIR) allowed to investigate the bonding situation of the functional groups, while X-Ray diffraction (XRD) identified the crystalline phases. The carbonization of the cellulose template during pyrolysis was studied using µ-Raman spectroscopy. Thermogravimetric Analysis (TGA) was used to determine the thermal stability of the impregnated papers and their volatile components based on the weight loss that occurs during pyrolysis. Lastly, electrocatalytic and electromagnetic measurements were performed with the ceramic papers and compared with state-of-the-art compositions. |
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Status: | Publisher's Version | ||||
URN: | urn:nbn:de:tuda-tuprints-215958 | ||||
Classification DDC: | 500 Science and mathematics > 500 Science 500 Science and mathematics > 540 Chemistry 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
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Divisions: | 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
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Date Deposited: | 19 Oct 2022 12:20 | ||||
Last Modified: | 21 Oct 2022 12:54 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21595 | ||||
PPN: | 50065011X | ||||
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