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The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes
Thesis (MSc) -- University of Stellenbosch, 1990.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867614098273861632 |
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| access_status_str | Open Access |
| author | Gerber, Stephanus |
| author2 | Sandeson, R. D. |
| author_browse | Gerber, Stephanus Sandeson, R. D. |
| author_facet | Sandeson, R. D. Gerber, Stephanus |
| author_sort | Gerber, Stephanus |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc) -- University of Stellenbosch, 1990. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/67386 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:46:38.139Z |
| 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:10019.1/67386 The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes Gerber, Stephanus Sandeson, R. D. Van Reenen, A. J. Stellenbosch University. Faculty of Science. Dept. of Chemistry and Polymer Science. Membranes (Technology) Polyelectrolytes Water reuse Dissertations -- Polymer science Thesis (MSc) -- University of Stellenbosch, 1990. Copolymers of 2‑propenoic acid‑co‑2‑hydroxy ethyl (2‑methyl) propenoate (I) and 2‑propenoic acid‑co‑2‑hydroxy ethyl propenoate (II) were prepared. The synthesised copolymers were characterized in terms of their composition and molecular mass. The water uptake capability and zirconium chelation ability of these copolymers were also investigated. Dynamic membranes were formed with all the synthesised copolymers. It was established that a minimum charge density was necessary to obtain an appreciable amount of salt rejection (more than 50% 2‑propenoic acid), but that the presence of the hydroxy moiety in the copolymers did enhance salt rejection. Peak rejection values were obtained at 73% 2‑propenoic acid for the (I) copolymers and 71% for the (II) copolymers. The influence of changes in the pH, and feed salt concentration, on rejection and flux of the copolymer membranes were investigated. The dynamic copolymer membranes were crosslinked by the addition of Zn(NO₃)₂·4H₂O which acted as a crosslinking catalyst. The effect of crosslinking on the dependence of the copolymer membrane performance on pH and feed salt concentration was also investigated. Masters 2012-08-27T12:09:49Z 2012-08-27T12:09:49Z 1990 Thesis http://hdl.handle.net/10019.1/67386 en Stellenbosch University 130 pages : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Membranes (Technology) Polyelectrolytes Water reuse Dissertations -- Polymer science Gerber, Stephanus The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title | The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title_full | The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title_fullStr | The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title_full_unstemmed | The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title_short | The synthesis and characterization of self-crosslinkable polyelectrolytes in dynamic membranes |
| title_sort | synthesis and characterization of self crosslinkable polyelectrolytes in dynamic membranes |
| topic | Membranes (Technology) Polyelectrolytes Water reuse Dissertations -- Polymer science |
| url | http://hdl.handle.net/10019.1/67386 |
| work_keys_str_mv | AT gerberstephanus thesynthesisandcharacterizationofselfcrosslinkablepolyelectrolytesindynamicmembranes AT gerberstephanus synthesisandcharacterizationofselfcrosslinkablepolyelectrolytesindynamicmembranes |