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Fluorination of polymers
Thesis (M.Sc.) -- University of Stellenbosch, 1991.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867614113535885313 |
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| access_status_str | Open Access |
| author | Du Toit, Francois Johannes |
| author2 | Sanderson, R. D. |
| author_browse | Du Toit, Francois Johannes Sanderson, R. D. |
| author_facet | Sanderson, R. D. Du Toit, Francois Johannes |
| author_sort | Du Toit, Francois Johannes |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (M.Sc.) -- University of Stellenbosch, 1991. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/69257 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:46:52.985Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/69257 Fluorination of polymers Du Toit, Francois Johannes Sanderson, R. D. Stellenbosch University. Faculty of Science. Dept. of Chemistry & Polymer Science. Polymers Fluorination Dissertations -- Polymer science Thesis (M.Sc.) -- University of Stellenbosch, 1991. Polyethylene and polypropylene were reacted with elemental fluorine under carefully controlled conditions to produce fluorocarbon polymers. Fluorination of polymer films resulted in fluorination of only the outer surfaces of the films, while the reaction of elemental fluorine with powdered hydrocarbon polymers produced perfluorocarbon polymers. Existing and newly developed techniques were used to characterize the fluorinated polymers. It was shown that the degree of fluorination was influenced by the surface area of the hydrocarbon material, the concentration of the fluorine gas, and the time and temperature of fluorination. A fluidized-bed reactor used for the fluorination of polymer powders effectively increased the reaction rate. The surface tension and the oxygen permeability of the fluorinated polymers were studied. The surface tension of hydrocarbon polymers was not influenced by different solvents, but the surface tension of fluorinated polymers was affected by the type of solvent that was used. There were indications that the surface tension was affected by oxygen introduced into the polymer surface during fluorination. Fluorination lowered the permeability of oxygen through hydrocarbon polymers. Masters 2012-08-27T12:27:00Z 2012-08-27T12:27:00Z 1991 Thesis http://hdl.handle.net/10019.1/69257 en Stellenbosch University 120 pages : ill. Stellenbosch : Stellenbosch University |
| spellingShingle | Polymers Fluorination Dissertations -- Polymer science Du Toit, Francois Johannes Fluorination of polymers |
| title | Fluorination of polymers |
| title_full | Fluorination of polymers |
| title_fullStr | Fluorination of polymers |
| title_full_unstemmed | Fluorination of polymers |
| title_short | Fluorination of polymers |
| title_sort | fluorination of polymers |
| topic | Polymers Fluorination Dissertations -- Polymer science |
| url | http://hdl.handle.net/10019.1/69257 |
| work_keys_str_mv | AT dutoitfrancoisjohannes fluorinationofpolymers |