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The effect of controlled degradation with an organic peroxide on the molecular characteristics and properties of heterophasic propylene-ethylene copolymers (HECO)
(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: Heterophasic copolymers (also known as HECO polymers) or often referred to only as impact
copolymers or block copolymers comprise a polymer matrix with a dispersed rubbery
copolymer phase. The polymer ...
Highly filled water based polymer/clay hybrid latexes
(Stellenbosch : Stellenbosch University, 2012-12)
ENGLISH ABSTRACT: The use of co-sonication (ad-miniemulsion) polymerisation for the preparation of highly filled polymer/clay hybrid latexes is described. Laponite (Lap) content levels in the range of 10–50 wt% were ...
Synthesis and characterization of two novel urethane macromonomers and their methacrylic/urethane graft copolymers
(Stellenbosch : University of Stellenbosch, 2010-03)
ENGLISH ABSTRACT:
Polymethacrylates are well known adhesives and can carry specific functionality, but have
the disadvantage that their flexible backbones impart limited thermal stability and mechanical
strength. ...
Kinetic and mechanistic features of nitroxide mediated (co)polymerization
(Stellenbosch : University of Stellenbosch, 2011-03)
Please refer to full text to view abstract.
Multidimensional separation of complex polymers according to microstructure
(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: Complex polymer systems have multiple distributions with regard to molecular parameters
such as molar mass, functionality, chemical composition, molecular architecture and
microstructure. These distributions ...
Polypropylene/filler nanocomposites by melt compounding and in situ polymerization
(Stellenbosch : University of Stellenbosch, 2010-12)
ENGLISH ABSTRACT: The properties of polymer nanocomposites depend greatly on the
chemistry of the polymer matrices, the nature of the nanofillers, and the way in
which they are prepared. Understanding the synthesis–str ...
Click chemistry for the preparation of advanced macromolecular architectures
(Stellenbosch : University of Stellenbosch, 2010-03)
ENGLISH ABSTRACT:
Different click chemistry methods have been used together with Reversible Addition-
Fragmentation chain Transfer (RAFT) mediated polymerization to synthesize macromolecular
architectures.
A new leaving ...
The effect of in-process ethylene incorporation on the evolution of particle morphology and molecular characteristics of commercial heterophasic ethylene propylene copolymers (HEPCs)
(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: Impact copolymers or heterophasic polypropylene-ethylene-co-propylene copolymers (HEPCs) commonly produced in industry are valued for their good mechanical properties, combining the rigidity of the ...
The use of laser light scattering to study solution crystallization phenomena in polyolefins
(Stellenbosch : Stellenbosch University, 2012-12)
ENGLISH ABSTRACT: An instrument, named solution crystallization analysis by laser light scattering (SCALLS), that measures
the solution melting and crystallization of polymers in solution was developed further in this ...
Impact of molecular structure on water vapour sorption properties in nanostructured polymeric films
(Stellenbosch : Stellenbosch University, 2011-12)
ENGLISH ABSTRACT: In this study, the use of surfactants, plate-like clays, organophilic molecules and side-chain
crystallinity was investigated for their impact on the transport mechanisms of water vapour
through polymer ...