Synthesis and characterisation of amphiphilic block copolymers

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dc.contributor.advisorVan Reenen, A. J.
dc.contributor.authorMorkel, Charl Ernst
dc.contributor.otherUniversity of Stellenbosch. Faculty of Science. Dept. of Chemistry and Polymer Science.
dc.date.accessioned2008-07-22T08:11:07Zen_ZA
dc.date.accessioned2010-06-01T08:15:13Z
dc.date.available2008-07-22T08:11:07Zen_ZA
dc.date.available2010-06-01T08:15:13Z
dc.date.issued2005-03
dc.descriptionThesis (PhD (Chemistry and Polymer Science)--University of Stellenbosch, 2005.
dc.description.abstractThis 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.en
dc.identifier.urihttp://hdl.handle.net/10019.1/1213
dc.language.isoen
dc.publisherStellenbosch : University of Stellenbosch
dc.rights.holderUniversity of Stellenbosch
dc.subjectDissertations -- Polymer scienceen
dc.subjectTheses -- Polymer scienceen
dc.subjectBlock copolymersen
dc.subjectBlock copolymers -- Synthesisen
dc.titleSynthesis and characterisation of amphiphilic block copolymersen
dc.typeThesis
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