Doctoral Degrees (Chemistry and Polymer Science)
Recent Submissions
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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 ... -
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 -
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 ... -
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 ... -
Applications of superparamagnetic nanoparticles for the separation and recovery of PGM metals from acidic wastewater solutions
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: South Africa is one of the leading countries in the production of precious metals (Au and PGMs). The refinery final stages for recovering precious metals makes use of two hydrometallurgical processes: ... -
Thermal and mechanical responsiveness of some 4-substituted benzonitriles
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: This work is based on three publications. The first manuscript describes the large volumetric thermal expansion of an organic cocrystal over a wide range of temperature (100–300 K). The novel organic ... -
Design and Synthesis of potent benzimidazolone HIV Non-nucleoside reverse transcriptase inhibitors
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Since the 1980’s, HIV has plagued the population on a global scale, with millions of newly infected individuals reported every year. However, with the introduction of combination therapy, which ... -
Design and development of novel irreversible GSK-3β inhibitors to address Alzheimer's disease
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Molecular modelling on the GSK-3β protein was carried out to identify a library of suitable electrophilic warhead containing ligands that have the necessary interactions with the binding site. Several ... -
Rationalising the solid-state properties of dithiadiazolyl radicals using a combined theoretical and experimental approach
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The work describes a series of theoretical and experimental studies carried out to better understand the solid-state properties of 1,2,3,5-dithiadiazolyl (DTDA) radicals. The attempted co-crystallisation ... -
Reversible photo-induced isomerization of cis-[M(L-κS,O)2] (M=PdII, PtII) complexes with N,N-dialkyl-N’-acyl(aroyl)thiourea ligands (HL): Key to the isolation of novel geometric trans-[M(L-κS,O)2] and trans-[M(L-κS,N)2] isomers
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: The reaction of a series of selected N,N-dialkyl-N’-acyl(aroyl)thioureas to PtII or PdII formed exclusively cis-[M(Ln -κS,O)2] complexes which were fully characterized by melting point determination, 1H, ... -
Host-guest dynamics in copper-based metal-organic frameworks
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: A vast number of metal-organic framework materials (MOFs) and structures have been reported in the literature. These materials are of interest as they exhibit a wide range of remarkable properties such ... -
Synthesis of fused heterocyclic aromatic compounds as potential antiplasmodial agents
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: 3-Methyl benzofuran antiplasmodial compounds have been described in literature and and synthesis of heterocyclic derivatives forms the basis of this project. These benzofuran compounds were synthesized ... -
The Synthesis and characterization of hydrophilic gold nanoparticles via a DEN-MPC method and their evaluation as biphasic catalysts
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The synthesis of hydrophilic gold nanoparticles, by using a dendrimer template method to produce dendrimer encapsulated nanoparticles (DENs), in combination with a monolayer protected cluster (MPC) method ...
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