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Synthesis and characterisation of amphiphilic block copolymers
Thesis (PhD (Chemistry and Polymer Science)--University of Stellenbosch, 2005.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2008
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| _version_ | 1867613804996591616 |
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| access_status_str | Open Access |
| author | Morkel, Charl Ernst |
| author2 | Van Reenen, A. J. |
| author_browse | Morkel, Charl Ernst Van Reenen, A. J. |
| author_facet | Van Reenen, A. J. Morkel, Charl Ernst |
| author_sort | Morkel, Charl Ernst |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (PhD (Chemistry and Polymer Science)--University of Stellenbosch, 2005. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/1213 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:41:58.332Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/1213 Synthesis and characterisation of amphiphilic block copolymers Morkel, Charl Ernst Van Reenen, A. J. University of Stellenbosch. Faculty of Science. Dept. of Chemistry and Polymer Science. Dissertations -- Polymer science Theses -- Polymer science Block copolymers Block copolymers -- Synthesis Thesis (PhD (Chemistry and Polymer Science)--University of Stellenbosch, 2005. This study involves the synthesis and characterisation of PEG-based amphiphilic block copolymers for the hydrophilization of polysulphone ultrafiltration membranes. PEG based macro RAFT agents were synthesized and characterised. PEG-b-PS block copolymers were synthesized via the RAFT assisted controlled free radical polymerisation utilizing the synthesized PEG macro RAFT agents. The resulting polymerisation products were then analyzed by two-dimensional chromatography at the “critical conditions” for PS. In the second phase of this study PEG-b-PSU block copolymers were synthesized via the polycondensation of bis (4-chlorophenyl) sulphone, Bisphenol A, and PEG. The resulting products were characterised by NMR spectrometry. PEG-b-PS films and modified PSU membranes (modified by the addition of PEG-b-PSU block copolymer to the membrane casting solution) were prepared and analyzed. Surface analyses included static contact angle, AFM force-distance analysis, and FTIR-PAS analysis. Results showed the successful synthesis of both PEG-b-PS and PEG-b-PSU amphiphilic block copolymers. Surface analysis proved the successful hydrophilization of the surface of the modified PSU membranes. Doctoral 2008-07-22T08:11:07Z 2010-06-01T08:15:13Z 2008-07-22T08:11:07Z 2010-06-01T08:15:13Z 2005-03 Thesis http://hdl.handle.net/10019.1/1213 en University of Stellenbosch application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Dissertations -- Polymer science Theses -- Polymer science Block copolymers Block copolymers -- Synthesis Morkel, Charl Ernst Synthesis and characterisation of amphiphilic block copolymers |
| title | Synthesis and characterisation of amphiphilic block copolymers |
| title_full | Synthesis and characterisation of amphiphilic block copolymers |
| title_fullStr | Synthesis and characterisation of amphiphilic block copolymers |
| title_full_unstemmed | Synthesis and characterisation of amphiphilic block copolymers |
| title_short | Synthesis and characterisation of amphiphilic block copolymers |
| title_sort | synthesis and characterisation of amphiphilic block copolymers |
| topic | Dissertations -- Polymer science Theses -- Polymer science Block copolymers Block copolymers -- Synthesis |
| url | http://hdl.handle.net/10019.1/1213 |
| work_keys_str_mv | AT morkelcharlernst synthesisandcharacterisationofamphiphilicblockcopolymers |