Browsing by Subject "NMR"
Now showing items 1-10 of 10
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Aluminum triflate-cocatalyzed radical copolymerization of styrene and ethyl acrylate
(Springer, 2020)Various random copolymers, poly(styrene-co-ethyl acrylate), were synthesized by free radical bulk copolymerization cocatalyzed by aluminum triflate (Al(OTf)3). The experimental conditions for the polymerization reactions, ... -
The characterisation of slow-heated inertinite- and vitrinite-rich coals from the South African coalfields
(Elsevier, 2015)The development of coal char structures with pyrolysis has been extensively investigated but has traditionally been focused on the carboniferous coals in the northern Hemisphere. In this investigation, the properties of ... -
Chemical oxidative polymerization of m-phenylenediamine and its derivatives using aluminium triflate as a co-catalyst
(Elsevier, 2013)Aromatic diamine monomers, including m-phenylenediamine (mPD), 2-methyl-m-phenylenediamine (2Me-mPD), 4-methyl-m-phenylenediamine (4Me-mPD) and trimethyl-mphenylenediamine (tMe-mPD), were polymerized by chemical oxidation ... -
Improving a biosignature for respiratory chain deficiencies in a South African cohort
(North-West University (South Africa) , Potchefstroom Campus, 2016)Mitochondria are the cell’s main energy producing site, found in the cytoplasm of nearly all eukaryotic cells. These organelles generate cellular energy in the form of adenosine triphosphate (ATP), mostly by means of the ... -
Investigating the effect of anaesthesia on the metabolism of zebrafish (D. rerio)
(North-West University (South Africa), 2022)In recent years, zebrafish (D. rerio) have emerged as valuable research models, being widely used as models for aquaculture research, but also to model human metabolic diseases. The ethical guidelines stipulate that ... -
Karakterisering van Grubbs-tipe prekatalisatore met behulp van kernmagnetiese resonansspektroskopie
(North-West University, 2014)Since the development of the ruthenium containing precatalysts Grubbs 1 (1) and Grubbs 2 (2), there was an increase in the development of new precatalysts. The NMR characterization could not cope with this. The NMR ... -
Structural assignment of commercial polyisobutylene succinic anhydride-based surfactants
(Springer, 2017)Concentration of the surface active agents in industrial products is a common source of error. In order to compare the efficiency of a number of polyisobutylene succinic anhydride (PIBSA) based surfactants, their concentration ... -
Synthesis, characterisation and properties of fulvic acid, derived from a carbohydrate
(North-West University (South-Africa), 2019)Introduction: Human and animal health is constantly threatened by pathogenic microbes and the emergence of bacteria resistant to standard medicinal interventions has escalated the search for new and innovative pharmaceutical ... -
Use of HPHT autoclave to determine corrosion inhibition effect of poly(methyl methacrylate-co-N-vinyl-2-pyrrolidone) on carbon steels in 3.5% NaCl solution saturated with CO2
(Springer, 2015)The influence of poly(methylmethacrylate-co-N-vinyl-2-pyrrolidone), P(MMA-co-VP), on corrosion of carbon steels (J55, N80, P110SS and C110 steels) in 3.5 wt% NaCl solution saturated with CO2 was evaluated using static high ... -
Using aluminium triflate as a co-catalyst for the polymerization of o-phenylenediamine and its derivatives
(Wiley, 2014)Aromatic diamine monomers, including o-phenylenediamine (oPD), 4-methyl-o-phenylenediamine (4Me-oPD), 4,5-dimethylo- phenylenediamine (dMe-oPD) and 4-(tert-butyl)-o-phenylenediamine (tBu-oPD), were polymerized by chemical ...
