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Synthesis and characterization of telechelic hydroxyl functional poly (N-vinylpyrrolidone)
(Stellenbosch : Stellenbosch University, 2008-03)
Reversible addition fragmentation chain transfer (RAFT)-mediated polymerization has emerged as a
versatile method for preparing polymers with control over molecular weight and polydispersity.
Inherent in its mechanism ...
Synthesis, properties and analysis of polydadmac for water purification
(Stellenbosch : Stellenbosch University, 2008-03)
ENGLISH ABSTRACT: This study concerns the synthesis, properties and quantitative analysis of polydiallyldimethylammonium chloride (polyDADMAC), a water-soluble polymer used world-wide for potable water purification. The ...
Reversible addition fragmentation chain transfer (RAFT) mediated polymerization of N-vinylpyrrolidone
(Stellenbosch : University of Stellenbosch, 2008-03)
Xanthate-mediated polymerization was investigated as a tool for the preparation
of well-defined poly(N-vinylpyrrolidone) and copolymers of N-vinylpyrrolidone. Some
results regarding the monomer vinyl acetate are included, ...
Investigation of molecular weight effects during the solution crystallisation of polyolefins
(Stellenbosch : University of Stellenbosch, 2008-03)
This study involved (a) the development and testing of a solution turbidity fractionation analyser (TFA) and (b) the investigation of possible molecular weight effects on solution crystallisation. To investigate the latter ...
Novel siloxane block copolymers
(Stellenbosch : Stellenbosch University, 2008-12)
The research presented in this dissertation was concerned with the living radical
polymerization (LRP) of an amphiphilic, water-soluble, bi-substituted and
biologically compatible acrylamide derivative, namely ...
AB diblock copolymers via RAFT-mediated miniemulsion polymerization
(Stellenbosch : Stellenbosch University, 2008-12)
The Reversible addition fragmentation chain transfer (RAFT) technique is a robust and
versatile technique that enables the synthesis of polymers of controlled molecular
weight and polydispersity. The application of the ...
Tailored glycopolymers
(Stellenbosch : Stellenbosch University, 2008-12)
The synthesis of glycopolymers with various comonomers as prepared via the RAFT process is
investigated.
The macro-RAFT agent poly(3-O-methacryloyl-1,2:5,6-di-O-isopropylidene-D-glucofuranose)
(PMAlpGlc) was prepared ...
Chemical modification of polysaccharides with hydrophilic polymers for CaCO3 crystal growth modification and filler retention, for paper applications
(Stellenbosch : Stellenbosch University, 2008-12)
Polysaccharides were modified with selected polymers via the grafting technique. Both
anionic and cationic polysaccharides were prepared. Random and crosslinked graft
copolymers were also prepared. The percentage grafting ...