Negrea, Alina-Gabriela;
(2023)
Chemical Vapour Deposition of Titania Thin Films for Glass Bottles.
Doctoral thesis (Eng.D), UCL (University College London).
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Abstract
The work presented in this thesis shows the preparation and characterization of doped TiO2 thin films on glass for commercial applications, with the aim of improving the mechanical strength and durability of existing materials used in the coating of glass bottles for beverage packaging. Such materials can play an important role in expanding the life of reusable glass bottles, improving the robustness of the container, and therefore aiding in reducing the environmental impact of glass production. The films showed good adhesivity, coverage and uniformity and showed promising morphological differences in relation to pristine TiO2 films prepared under the same method. Thin films of tin-doped titanium dioxide (Sn-TiO2) have been deposited via an APCVD route, using a combinatorial and a non-combinatorial approach, over a range of precursor compositions and temperatures. Films of Nb- and Al-doped titanium dioxide were prepared via AACVD, over different temperatures and dopant concentrations. The deposition techniques as well as choice of precursors are replicating the deposition methods and conditions compatible with the industrial coating of glass bottles for beer packaging. The doped samples successfully passed preliminary robustness measurements performed through a sandpaper test and caustic wash cycles, which closely replicate the process reusable glass bottles are undergoing between use cycles industrially. Although further tests are needed in order to fully quantify the effect of abrasive tests on the mechanical properties of the films, the results show a promising potential of further investigating such films in the context of enhancing mechanical properties of anatase films for higher durability in the glass food container industry.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Eng.D |
| Title: | Chemical Vapour Deposition of Titania Thin Films for Glass Bottles |
| Language: | English |
| Additional information: | Copyright © The Author 2023. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10184157 |
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