Tillerkeratne, Liyanarachchige M.K. (1977). A Study of the Role of Hydroperoxides in the Degradation and Stabilisation of Polymers. PHD thesis, Aston University.
Abstract
The photo-degradation mechanism of polyethylene was studied by means of functional group analysis using infrared spectroscopy. The rates of appearance and disappearance of key functional groups such as hydroperoxide, carbonyl, vinylidene, and vinyl formed during the photooxidation of the polymer were studied and compared. The effect of metal complexes, which are supposed to be effective photoactivators for the autoxidation of polyethylene, was also studied. The efficiency of these complexes as well as nitrobenzene and plant pigments as photoactivators in the autoxidation of natural rubber was looked into. The mechanism of action of nitrobenzene in natural rubber was found to be due to the generation of singlet oxygen; the latter causing depolymerisation of the polymer. The technological properties of the soft and viscid products thus obtained were also studied.
| Publication DOI: | https://doi.org/10.48780/publications.aston.ac.uk.00011582 |
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| Divisions: | College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry |
| Additional Information: | Copyright © Liyanarachchige M.K. Tillerkeratne, 1977. Liyanarachchige M.K. Tillerkeratne asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. |
| Institution: | Aston University |
| Uncontrolled Keywords: | hydroperoxides,degradation,stabilisation,polymers |
| Last Modified: | 19 Feb 2025 14:15 |
| Date Deposited: | 11 Jan 2011 15:52 |
| Completed Date: | 1977-10 |
| Authors: |
Tillerkeratne, Liyanarachchige M.K.
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