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The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions
Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2007.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2007
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| _version_ | 1867613739539234816 |
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| access_status_str | Open Access |
| author | Al-Aeeb, Ahmed |
| author2 | Van Reenen, A. J. |
| author_browse | Al-Aeeb, Ahmed Van Reenen, A. J. |
| author_facet | Van Reenen, A. J. Al-Aeeb, Ahmed |
| author_sort | Al-Aeeb, Ahmed |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2007. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2517 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:56.191Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2007 |
| publishDateRange | 2007 |
| publishDateSort | 2007 |
| 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:10019.1/2517 The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions Al-Aeeb, Ahmed Van Reenen, A. J. University of Stellenbosch. Faculty of Science. Dept. of Chemistry and Polymer Science. Oligomers Oligomers analysis Polymerization Dissertations -- Polymer science Theses -- Polymer science Chemistry and Polymer Science Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2007. This study comprises the synthesis, functionalization, and characterization of 1-butene oligomers, as well as the synthesis of oligobutene-based macro-RAFT agent. The directed oligomerization of 1-butene was carried out with a Cp2ZrCl2 as a catalyst, activated with MAO as a co-catalyst (10% in toluene), in the ratio Al/Zr =1000/1. Oligomers possessing vinylidene double bonds, with low molecular weight (Mw), ranging between 800 and 2000 g.mol-1 as confirmed by gel permeation chromatography, were obtained. The oligomers were successfully functionalized by adding hydroxyl functionality to the vinylidene double bond using oxymercuration-demercuration reaction, and as a result hydroxy-terminated oligobutenes were obtained. Characterization techniques such as 1H NMR, 13C NMR, GC-MS and FTIR confirmed the successful synthesis and functionalization of 1-butene oligomers. The hydroxy-terminated oligobutenes were used to prepare an oligobutene-based macro-RAFT agent. The synthesis of the macro-RAFT agent was carried out with an esterification reaction between the hydroxy-terminated oligobutenes and an acid functionalized RAFT agent. The successful synthesis of the macro-RAFT agent was confirmed by 1H NMR, 13C NMR, FTIR, and UV spectroscopy. The chain transfer ability of the macro-RAFT agent to induce living characteristics in free radical styrene polymerization was investigated with respect to molecular weight control and kinetic behaviour. The macro-RAFT agent was identified as suitable RAFT agent, yielding polystyrene-b-oligobutnes with low polydispersities and molecular weight ranging from 3000 to 40000 g/mol. 2007-11-15T06:24:00Z 2010-06-01T08:51:01Z 2007-11-15T06:24:00Z 2010-06-01T08:51:01Z 2007-03 Thesis http://hdl.handle.net/10019.1/2517 en University of Stellenbosch 1524269 bytes application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Oligomers Oligomers analysis Polymerization Dissertations -- Polymer science Theses -- Polymer science Chemistry and Polymer Science Al-Aeeb, Ahmed The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title | The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title_full | The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title_fullStr | The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title_full_unstemmed | The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title_short | The synthesis of 1-butene oligomers with vinyl endgroups and their use in further reactions |
| title_sort | synthesis of 1 butene oligomers with vinyl endgroups and their use in further reactions |
| topic | Oligomers Oligomers analysis Polymerization Dissertations -- Polymer science Theses -- Polymer science Chemistry and Polymer Science |
| url | http://hdl.handle.net/10019.1/2517 |
| work_keys_str_mv | AT alaeebahmed thesynthesisof1buteneoligomerswithvinylendgroupsandtheiruseinfurtherreactions AT alaeebahmed synthesisof1buteneoligomerswithvinylendgroupsandtheiruseinfurtherreactions |