Doctoral Degrees (Chemistry and Polymer Science)
Recent Submissions
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Defect engineering of UiO-66 metal-organic framework (MOF) for improved hydrogen storage applications
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: ENGLISH ABSTRACT: Please refer to full text for abstract -
Characterization of glycopolymers by asymmetric flow field-flow fractionation
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: An alternative route for studying the interactions between human serum albumin (HSA) and dendronized glycopolymers was implemented by applying a versatile asymmetric flow field-flow fractionation ... -
Multidimensional fractionation of complex polymers by comprehensive online-coupled thermal field-flow fractionation and size exclusion chromatography.
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The comprehensive characterization of complex polymeric materials remains a primary objective in research and industry. It is important to understand the molecular heterogeneity of complex ... -
Selective synthesis of multicomponent crystals using mechanochemistry and sublimation
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The aim of this thesis is to demonstrate how careful control of the crystallisation technique used can lead to selective multicomponent crystal formation. Multicomponent materials are often crystallised ... -
The effect of controlled rheology on the evolution of chemical composition distribution of commercial Heterophasic Ethylene Propylene Copolymers (HEPCs)
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: The vis-breaking of heterophasic ethylene-propylene copolymers (HEPCs) is an important industrial process. While the changes in molar mass properties are easy to track using hightemperature size exclusion ... -
Structure-property relationships in stimulus-responsive cadmium- and zinc-based metal-organic framework materials
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: The study of flexible MOFs or soft porous crystals is an exciting and fast-expanding area of MOF research. These materials respond dynamically to external stimuli, including temperature, mechanical pressure, ... -
The use of mononuclear and multinuclear complexes of rhodium and ruthenium in catalytic olefin hydroformylation and hydroaminomethylation reactions
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: A range of imino-pyridine ligands (L1-L8) were synthesized via Schiff-base condensation reactions. These ligands were subsequently complexed to Rh(I) and Ru(II) using [Rh(COD)Cl]2 and [RuCl2(p-cymene)]2, ... -
Development of advanced methods for the analysis of star and highly branched polymers
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: Branched polymers are a unique class of materials with broad applications in fields such as automobile parts, textiles, lubricants, packaging, medicine, construction, soil binders in agriculture, and so ... -
Chitin and chitosan nanomaterials for efficient removal of heavy metals from waste water
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Heavy metal contamination is a serious problem that is responsible for water pollution that can cause serious health issues to animals and humans. The problem is being addressed by various researchers ... -
Flexible Co(II) Metal-Organic Frameworks with Mixed Ligands under Controlled Pressure
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: A number of flexible metal-organic frameworks (MOFs) are shown to undergo phase changes under CO2 gas pressure and, in two cases, the mechanisms of these changes have been elucidated using computational ... -
Thermal field-flow fractionation and the advanced analysis of complex polymers
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Please refer to full text for abstract -
Hydrocarbon oxidations using metal-containing polypropylene-imine dendrimers
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: The production of oxygenates from hydrocarbon feedstocks is an important industrial process. However, this process suffers from various weaknesses such as poor catalytic activity, chemoselectivity, and ... -
Design and synthesis of Covalent Kinase Inhibitors Utilising Novel Electrophiles
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Cancer is the collective name given to an extensive group of diseases which is mainly characterised by the uncontrolled growth of abnormal cells that either ignore or evade biological processes or display ... -
Synthesis of novel Tetrahydroisoquinoline-related estrogen receptor modulators
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: The tetrahydroisoquinoline (THIQ) core has displayed a rich history as a biologically active natural product and is an interesting scaffold to use in drug discovery. Its structural skeleton is present ... -
Analysis of complex tannins by multidimensional techniques
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: Hydrolysable tannins are plant derived (poly)phenolics which for centuries have been used in tanning, the transformation of animal hides into leather. In addition to their industrial applications, ... -
Investigating the formation of multicomponent crystals of antiplasmodial agents
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: The aim of this project was to explore the formation of multicomponent crystals of some known, as well as some novel, antiplasmodial agents and investigate and compare structures and properties of ... -
Synthesis of 5- and 6-donor schiff base ligands for the selective extraction and transport of selected base metals ions
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Schiff base ligands have various advantageous properties that can be employed for use in solvent extraction processes. They are relatively cheap to synthesize, stable, robust and can be modified to ... -
High temperature multidimensional chromatography of complex and functionalized polyolefins
(Stellenbosch : Stellenbosch University, 2018., 2018-12)ENGLISH ABSTRACT: Polyolefins like all other synthetic polymers have complex microstructures that must be understood in order to predict product performance and adjust catalyst and reactor technologies. Between synthesis ... -
Development of a multiple fractionation protocol for the comprehensive analysis of low density polyethylene
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Low density polyethylene (LDPE) is a branched synthetic thermoplastic with a complex microstructure. In addition to the broad molar mass distribution (MMD), LDPE exhibits long chain branching (LCB) and ... -
Crystallisation behaviour of commercial polyethylenes: a fundamental study
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Commercial films are generally made of polyolefins, often using a blend of two different polyolefins. Specifically, low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) are blended ...
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