Now showing items 1-6 of 6
Innovative spectroscopic and chromatographic techniques for the analysis of complex polyolefins prepared by metallocene catalysis
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: The study focused on the analysis of a variety o f synthesised tailored copolymers. During the investigation o f the samples new and innovative analytical techniques were developed to be able to identify ...
Ethylene and propylene copolymers utilizing Fishcer-Tropsch 1-olefins
(Stellenbosch : Stellenbosch University, 2000-12)
ENGLISH ABSTRACT: From the Sasol Fischer- Tropsch process, a variety of different a-olefins are produced. Sasol recently started presenting these a-olefins to polymer producers. To demonstrate the application possibilities ...
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 ...
Novel analytical approaches for studying degradation in polypropylene and propylene-1-pentene copolymers
(Stellenbosch : University of Stellenbosch, 2006-03)
Commercial polyolefins degrade under the influence of light, heat, chemical and mechanical factors. They are therefore stabilised to ensure that they maintain performance characteristics during their service life. Degradation ...
The development of analytical techniques for studying degradation in impact polypropylene copolymers
(Stellenbosch : University of Stellenbosch, 2009-03)
Unstabilised polyolefins are susceptible to degradation when exposed to molecular oxygen, heat, irradiation as well as chemical and mechanical stimuli. Oxidation leads to changes in molecular properties such as molecular ...
The preparation of polyolefin nanofibres by solution electrospinning
(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: Solution electrospinning is a technique used to produce polymer micro- or nanofibres. Recently a great deal of research has been done on the application of polymer nanofibres produced by this method. The ...