Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization
This thesis reports on an exploratory investigation into the immobilization of homogeneous olefin polymerisation cataiysts on dendritic supports...; The dendrimers . employed were essentially allylaryl-ether type systems and consisted of both dendritic wedges .and compltte dendrimers.. These materia...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemistry
2023
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867614132551811072 |
|---|---|
| access_status_str | Open Access |
| author | Waggie, Fazlin |
| author2 | Moss, John |
| author_browse | Moss, John Waggie, Fazlin |
| author_facet | Moss, John Waggie, Fazlin |
| author_sort | Waggie, Fazlin |
| collection | Thesis |
| description | This thesis reports on an exploratory investigation into the immobilization of homogeneous olefin polymerisation cataiysts on dendritic supports...; The dendrimers . employed were essentially allylaryl-ether type systems and consisted of both dendritic wedges .and compltte dendrimers.. These materials were used as supports for homogeneous irconocene catalysts. The zirconium moiety was attached to the surface of the dendrimer through the ally! functionality. This was dope via hydrozirconation of the pendant C=C of the ally! groups on the periphery of the dendrimers. A number of model compounds such as Cp2Zr{(CH2)4iPh}(Cl) and Cp2Zr{(CH2)30Ph}(Cl) were also prepared and their pronerties compared with the dendritic catalyst precursors .. The supported catalyst species together with. analogous mononuclear model compounds were activated using a range of activating agents. Included amongst these activating agents are, silver salts of the type AgX, (where X = OS02CF3, Cl04 and BP); the perfluoroaryl borane, B(C6Fs)3 and MAO. The activated complexes were assessed for their. polymerisation ability towards ethylene. The dendrimers were characterised using techniques such as FTIR spectroscopy, 1 H NMR and 13C NMR spectroscopy, GC mass spectrometry and microanalysis. All new organometallic compounds produced were characterised using techniques such as 1 H NMR and 13C NMR spectroscopy. The polymers prepared were characterised by Gel Permeation Chromatography (GPC), Fourier Transform InfraRed (FTIR), 1 H and 13C NMR spectroscopy, Differential Scanning Calorimetry (DSC) as well as Scanning Electron Microscopy (SEM). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/38355 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:47:11.172Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Department of Chemistry |
| publisherStr | Department of Chemistry |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/38355 The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization Waggie, Fazlin Moss, John Mapolie, Selwyn Science This thesis reports on an exploratory investigation into the immobilization of homogeneous olefin polymerisation cataiysts on dendritic supports...; The dendrimers . employed were essentially allylaryl-ether type systems and consisted of both dendritic wedges .and compltte dendrimers.. These materials were used as supports for homogeneous irconocene catalysts. The zirconium moiety was attached to the surface of the dendrimer through the ally! functionality. This was dope via hydrozirconation of the pendant C=C of the ally! groups on the periphery of the dendrimers. A number of model compounds such as Cp2Zr{(CH2)4iPh}(Cl) and Cp2Zr{(CH2)30Ph}(Cl) were also prepared and their pronerties compared with the dendritic catalyst precursors .. The supported catalyst species together with. analogous mononuclear model compounds were activated using a range of activating agents. Included amongst these activating agents are, silver salts of the type AgX, (where X = OS02CF3, Cl04 and BP); the perfluoroaryl borane, B(C6Fs)3 and MAO. The activated complexes were assessed for their. polymerisation ability towards ethylene. The dendrimers were characterised using techniques such as FTIR spectroscopy, 1 H NMR and 13C NMR spectroscopy, GC mass spectrometry and microanalysis. All new organometallic compounds produced were characterised using techniques such as 1 H NMR and 13C NMR spectroscopy. The polymers prepared were characterised by Gel Permeation Chromatography (GPC), Fourier Transform InfraRed (FTIR), 1 H and 13C NMR spectroscopy, Differential Scanning Calorimetry (DSC) as well as Scanning Electron Microscopy (SEM). 2023-09-04T08:23:23Z 2023-09-04T08:23:23Z 2003 2023-09-04T08:22:10Z Master Thesis Masters MSc http://hdl.handle.net/11427/38355 eng application/pdf Department of Chemistry Faculty of Science |
| spellingShingle | Science Waggie, Fazlin The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| thesis_degree_str | Master's |
| title | The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| title_full | The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| title_fullStr | The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| title_full_unstemmed | The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| title_short | The synthesis, characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| title_sort | synthesis characterization and activation of some multinuclear catalyst precursors for olefin polymerization |
| topic | Science |
| url | http://hdl.handle.net/11427/38355 |
| work_keys_str_mv | AT waggiefazlin thesynthesischaracterizationandactivationofsomemultinuclearcatalystprecursorsforolefinpolymerization AT waggiefazlin synthesischaracterizationandactivationofsomemultinuclearcatalystprecursorsforolefinpolymerization |