Thesis (PhD)--Stellenbosch University, 2003. / ENGLISH ABSTRACT: This dissertation describes work done on Fischer- Tropsch ionomeric waxes. The
waxes are characterized with respect to the method of manufacture, the mechanism of
the oxidation process, the saponification, the physical properties, the rheological
properties, the morphology and the water absorption of the waxes.
Different methods of physical and mechanical analysis are used to prove at which
concentration level, for each type of cation tested arid for each type of oxidized and
grafted wax prepared, the formation of multiplets and clusters within the Fischer-
Tropsch ionomeric waxes takes place. An understanding of multiplet and cluster
formation in Fischer- Tropsch ionomeric waxes is essential as these morphological
phenomena control the mechanical and physical behaviour of the Fischer- Tropsch
ionomeric waxes. The ability to be able to analyse the Fischer- Tropsch ionomeric
waxes for multiplet and cluster formation should allow one to predict the physical and
mechanical behaviour of the Fischer- Tropsch ionomeric waxes in practical
applications. / AFRIKAANSE OPSOMMING: Hierdie skripsie beskryf werk gedoen op Fischer-Tropsch ionomeries wasse. Die wasse
is gekarakteriseer ten opsigte van die vervaardigingsmetode, die meganisme van
oksidasie, die verseping, hulle fisiese en reologiese eienskappe, hulle morfologie en
water absorpsie.
Verskillende metodes van fisiese en meganiese analiese is gebruik om te bewys by
watter konsentrasie, vir 'n spesifieke katioon en vir 'n spesifieke geoksideerde of
entwas, wanneer veelvoud of tros-vorming plaasvind. Die vermoë om te verstaan hoe
en wanner veelvoude en trosse in Fischer- Tropsch ionomeries wasse vorm is van
kardinale belang, aangesien die fisiese en meganiese eienskappe van die Fischer-
Tropsch ionomeries wasse direk beinvloed word deur die vorming van veelvoude en
trosse. Die vermoë om Fischer- Tropsch ionemeries wasse te kan analiseer vir
veelvoud en tros vorming is voordelig om Fischer- Tropsch ionomeries wasse se
meganiese en fisiese eienskappe in praktiese aanwendings te voorspel.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/53427 |
| Date | 12 1900 |
| Creators | Potgieter Hennie (Hendrik Frederick) |
| Contributors | Sanderson, R. D., Stellenbosch University. Faculty of Science . Dept. of Chemistry & Polymer Science. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | English |
| Type | Thesis |
| Format | 219 p. : ill. (some col.) |
| Rights | Stellenbosch University |
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